ILK (integrin-linked kinase; now annotated by UniProt as 'Scaffold protein ILK') is a focal-adhesion protein of the protein-kinase superfamily that is catalytically dead - a pseudokinase. Rather than phosphorylating substrates, it functions as the central scaffold of the heterotrimeric IPP (ILK-PINCH-PARVIN) complex, linking integrin cytoplasmic tails to the actin cytoskeleton and coordinating cell-matrix adhesion, spreading, and integrin/growth-factor signaling. Its pseudokinase domain still binds ATP/Mg but performs no catalysis. ILK is essential for focal-adhesion organization, actin filament assembly, and is implicated in cardiac/muscle function and cancer.
| GO Term | Evidence | Action | Reason |
|---|---|---|---|
|
GO:0005737
cytoplasm
|
IBA
GO_REF:0000033 |
ACCEPT |
Summary: cytoplasm: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0007229
integrin-mediated signaling pathway
|
IBA
GO_REF:0000033 |
ACCEPT |
Summary: integrin-mediated signaling pathway: a core biological process for ILK.
Reason: Core process consistent with ILK's established function.
|
|
GO:0005102
signaling receptor binding
|
IBA
GO_REF:0000033 |
KEEP AS NON CORE |
Summary: signaling receptor binding.
Reason: Retained as non-core.
|
|
GO:0030154
cell differentiation
|
IBA
GO_REF:0000033 |
KEEP AS NON CORE |
Summary: cell differentiation: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0030674
protein-macromolecule adaptor activity
|
IBA
GO_REF:0000033 |
ACCEPT |
Summary: Protein-macromolecule adaptor activity: ILK's actual molecular function as the scaffold of the IPP (ILK-PINCH-PARVIN) complex linking integrins to the actin cytoskeleton.
Reason: Core molecular function for the pseudokinase scaffold. Retain.
Supporting Evidence:
file:human/ILK/ILK-uniprot.txt
Scaffold protein which mediates protein-protein interactions
|
|
GO:0005925
focal adhesion
|
IBA
GO_REF:0000033 |
ACCEPT |
Summary: focal adhesion: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0007160
cell-matrix adhesion
|
IBA
GO_REF:0000033 |
ACCEPT |
Summary: cell-matrix adhesion: a core biological process for ILK.
Reason: Core process consistent with ILK's established function.
|
|
GO:0034446
substrate adhesion-dependent cell spreading
|
IBA
GO_REF:0000033 |
ACCEPT |
Summary: substrate adhesion-dependent cell spreading: a core biological process for ILK.
Reason: Core process consistent with ILK's established function.
|
|
GO:0004672
protein kinase activity
|
IEA
GO_REF:0000002 |
REMOVE |
Summary: Positive 'protein kinase activity' (IEA) propagated from the protein-kinase-superfamily (TKL) signature. ILK is a pseudokinase with a degenerate catalytic site and no kinase activity.
Reason: Electronic over-propagation refuted on biological grounds: ILK is established as a catalytically dead scaffold (the curated NOT|ser/thr kinase). Remove.
Supporting Evidence:
file:human/ILK/ILK-uniprot.txt
Now thought to be a pseudokinase which does not have kinase activity and which functions solely as a scaffold protein
|
|
GO:0005524
ATP binding
|
IEA
GO_REF:0000002 |
KEEP AS NON CORE |
Summary: ATP binding: ILK's pseudokinase domain still binds ATP/Mg despite lacking catalytic activity (IDA).
Reason: Real (structurally demonstrated) nucleotide binding but not catalytic; non-core for a scaffold.
|
|
GO:0005634
nucleus
|
IEA
GO_REF:0000044 |
KEEP AS NON CORE |
Summary: nucleus: a secondary/broad localization for ILK.
Reason: Plausible but non-core (broad term or context-specific).
|
|
GO:0005737
cytoplasm
|
IEA
GO_REF:0000044 |
ACCEPT |
Summary: cytoplasm: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0005813
centrosome
|
IEA
GO_REF:0000044 |
KEEP AS NON CORE |
Summary: centrosome: a secondary/broad localization for ILK.
Reason: Plausible but non-core (broad term or context-specific).
|
|
GO:0005886
plasma membrane
|
IEA
GO_REF:0000044 |
ACCEPT |
Summary: plasma membrane: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0005925
focal adhesion
|
IEA
GO_REF:0000120 |
ACCEPT |
Summary: focal adhesion: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0005938
cell cortex
|
IEA
GO_REF:0000044 |
ACCEPT |
Summary: cell cortex: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0009653
anatomical structure morphogenesis
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: anatomical structure morphogenesis: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0030017
sarcomere
|
IEA
GO_REF:0000044 |
ACCEPT |
Summary: sarcomere: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0030027
lamellipodium
|
IEA
GO_REF:0000120 |
KEEP AS NON CORE |
Summary: lamellipodium: a secondary/broad localization for ILK.
Reason: Plausible but non-core (broad term or context-specific).
|
|
GO:0005515
protein binding
|
IPI
PMID:11331308 A new focal adhesion protein that interacts with integrin-li... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:11331308) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:11331582 Modulation of integrin signal transduction by ILKAP, a prote... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:11331582) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:12432066 Assembly of the PINCH-ILK-CH-ILKBP complex precedes and is e... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:12432066) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:16189514 Towards a proteome-scale map of the human protein-protein in... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:16189514) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:16936772 Integrin-linked kinase interacts with caspase-9 and -8 in an... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:16936772) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:17003112 Posttranslational hydroxylation of ankyrin repeats in Ikappa... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:17003112) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:17553790 Interaction of integrin-linked kinase with the kidney chlori... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:17553790) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:18339839 Rictor and integrin-linked kinase interact and regulate Akt ... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:18339839) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:19074270 The structural basis of integrin-linked kinase-PINCH interac... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:19074270) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:21516116 Next-generation sequencing to generate interactome datasets. |
MARK AS OVER ANNOTATED |
Summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:21516116).
Reason: High-throughput protein binding is uninformative about molecular function (curation guideline). Over-annotation.
|
|
GO:0005515
protein binding
|
IPI
PMID:21643011 Phosphorylation and interaction of myopodin by integrin-link... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:21643011) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:22939624 Quantitative analysis of HSP90-client interactions reveals p... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:22939624) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:23414517 A human skeletal muscle interactome centered on proteins inv... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:23414517) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:23455922 Interlaboratory reproducibility of large-scale human protein... |
MARK AS OVER ANNOTATED |
Summary: Specific protein interaction (PMID:23455922) consistent with ILK's scaffold/adapter role.
Reason: Large-scale standardized AP-MS protein-complex study; high-throughput generic protein binding, grouped with the other HT-screen over-annotations for consistency.
|
|
GO:0005515
protein binding
|
IPI
PMID:23877428 Interaction of smoothened with integrin-linked kinase in pri... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:23877428) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:25416956 A proteome-scale map of the human interactome network. |
MARK AS OVER ANNOTATED |
Summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:25416956).
Reason: High-throughput protein binding is uninformative about molecular function (curation guideline). Over-annotation.
|
|
GO:0005515
protein binding
|
IPI
PMID:25502805 A massively parallel pipeline to clone DNA variants and exam... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:25502805) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:25852190 Integrative analysis of kinase networks in TRAIL-induced apo... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:25852190) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:26496610 A human interactome in three quantitative dimensions organiz... |
MARK AS OVER ANNOTATED |
Summary: Specific protein interaction (PMID:26496610) consistent with ILK's scaffold/adapter role.
Reason: Large-scale quantitative interactome study ('A human interactome in three quantitative dimensions'); generic protein binding from a high-throughput screen is uninformative about molecular function. Grouped with the other HT-screen over-annotations.
|
|
GO:0005515
protein binding
|
IPI
PMID:26972000 Substrate-Trapped Interactors of PHD3 and FIH Cluster in Dis... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:26972000) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:28514442 Architecture of the human interactome defines protein commun... |
MARK AS OVER ANNOTATED |
Summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:28514442).
Reason: High-throughput protein binding is uninformative about molecular function (curation guideline). Over-annotation.
|
|
GO:0005515
protein binding
|
IPI
PMID:31515488 Extensive disruption of protein interactions by genetic vari... |
MARK AS OVER ANNOTATED |
Summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:31515488).
Reason: High-throughput protein binding is uninformative about molecular function (curation guideline). Over-annotation.
|
|
GO:0005515
protein binding
|
IPI
PMID:32296183 A reference map of the human binary protein interactome. |
MARK AS OVER ANNOTATED |
Summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:32296183).
Reason: High-throughput protein binding is uninformative about molecular function (curation guideline). Over-annotation.
|
|
GO:0005515
protein binding
|
IPI
PMID:32707033 Kinase Interaction Network Expands Functional and Disease Ro... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:32707033) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:33961781 Dual proteome-scale networks reveal cell-specific remodeling... |
MARK AS OVER ANNOTATED |
Summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:33961781).
Reason: High-throughput protein binding is uninformative about molecular function (curation guideline). Over-annotation.
|
|
GO:0005515
protein binding
|
IPI
PMID:35271311 OpenCell: Endogenous tagging for the cartography of human ce... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:35271311) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:36931259 A central chaperone-like role for 14-3-3 proteins in human c... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:36931259) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005515
protein binding
|
IPI
PMID:40205054 Multimodal cell maps as a foundation for structural and func... |
MARK AS OVER ANNOTATED |
Summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:40205054).
Reason: High-throughput protein binding is uninformative about molecular function (curation guideline). Over-annotation.
|
|
GO:0003151
outflow tract morphogenesis
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: outflow tract morphogenesis: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0007229
integrin-mediated signaling pathway
|
IEA
GO_REF:0000120 |
ACCEPT |
Summary: integrin-mediated signaling pathway: a core biological process for ILK.
Reason: Core process consistent with ILK's established function.
|
|
GO:0030513
positive regulation of BMP signaling pathway
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: positive regulation of BMP signaling pathway: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0045669
positive regulation of osteoblast differentiation
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: positive regulation of osteoblast differentiation: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0070836
caveola assembly
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: caveola assembly: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0072697
protein localization to cell cortex
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: protein localization to cell cortex: process annotation for ILK.
Reason: ILK's primary site is focal adhesions, not the broad cell cortex; keep as non-core for consistency with the caveola assembly annotation.
|
|
GO:0005925
focal adhesion
|
NAS
PMID:35089438 Integrin-linked kinase (ILK): the known vs. the unknown and ... |
ACCEPT |
Summary: focal adhesion: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0051017
actin filament bundle assembly
|
IDA
PMID:30367047 Non-catalytic signaling by pseudokinase ILK for regulating c... |
KEEP AS NON CORE |
Summary: actin filament bundle assembly: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0051639
actin filament network formation
|
IDA
PMID:30367047 Non-catalytic signaling by pseudokinase ILK for regulating c... |
KEEP AS NON CORE |
Summary: actin filament network formation: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0005829
cytosol
|
IDA
GO_REF:0000052 |
ACCEPT |
Summary: cytosol: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0005925
focal adhesion
|
IDA
GO_REF:0000052 |
ACCEPT |
Summary: focal adhesion: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0005886
plasma membrane
|
EXP
PMID:11402068 A novel integrin-linked kinase-binding protein, affixin, is ... |
ACCEPT |
Summary: plasma membrane: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0007229
integrin-mediated signaling pathway
|
ISS
PMID:20675382 CYR61 regulates BMP-2-dependent osteoblast differentiation t... |
ACCEPT |
Summary: integrin-mediated signaling pathway: a core biological process for ILK.
Reason: Core process consistent with ILK's established function.
|
|
GO:0000785
chromatin
|
IDA
PMID:17420447 Phosphorylation-dependent regulation of nuclear localization... |
KEEP AS NON CORE |
Summary: chromatin: a secondary/broad localization for ILK.
Reason: Plausible but non-core (broad term or context-specific).
|
|
GO:0005634
nucleus
|
IDA
PMID:17420447 Phosphorylation-dependent regulation of nuclear localization... |
KEEP AS NON CORE |
Summary: nucleus: a secondary/broad localization for ILK.
Reason: Plausible but non-core (broad term or context-specific).
|
|
GO:0005737
cytoplasm
|
IDA
PMID:17420447 Phosphorylation-dependent regulation of nuclear localization... |
ACCEPT |
Summary: cytoplasm: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0005813
centrosome
|
IDA
PMID:18283114 Integrin-linked kinase localizes to the centrosome and regul... |
KEEP AS NON CORE |
Summary: centrosome: a secondary/broad localization for ILK.
Reason: Plausible but non-core (broad term or context-specific).
|
|
GO:0007052
mitotic spindle organization
|
IMP
PMID:18283114 Integrin-linked kinase localizes to the centrosome and regul... |
KEEP AS NON CORE |
Summary: mitotic spindle organization: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0000287
magnesium ion binding
|
IDA
PMID:20005845 The pseudoactive site of ILK is essential for its binding to... |
KEEP AS NON CORE |
Summary: Magnesium ion binding (IDA) by the pseudokinase domain, associated with ATP binding.
Reason: Real but non-core (no catalytic role).
|
|
GO:0004674
protein serine/threonine kinase activity
|
IDA
NOT
PMID:20005845 The pseudoactive site of ILK is essential for its binding to... |
ACCEPT |
Summary: NOT: ILK does not have protein serine/threonine kinase activity. Structural and biochemical work established it as a pseudokinase scaffold (UniProt now names it 'Scaffold protein ILK').
Reason: Correct, important negation supported by direct evidence (IDA). Retain.
Supporting Evidence:
file:human/ILK/ILK-uniprot.txt
Now thought to be a pseudokinase which does not have kinase activity and which functions solely as a scaffold protein
|
|
GO:0004674
protein serine/threonine kinase activity
|
IDA
NOT
PMID:21524996 Biochemical, proteomic, structural, and thermodynamic charac... |
ACCEPT |
Summary: NOT: ILK does not have protein serine/threonine kinase activity. Structural and biochemical work established it as a pseudokinase scaffold (UniProt now names it 'Scaffold protein ILK').
Reason: Correct, important negation supported by direct evidence (IDA). Retain.
Supporting Evidence:
file:human/ILK/ILK-uniprot.txt
Now thought to be a pseudokinase which does not have kinase activity and which functions solely as a scaffold protein
|
|
GO:0005178
integrin binding
|
IDA
PMID:20005845 The pseudoactive site of ILK is essential for its binding to... |
ACCEPT |
Summary: Integrin binding (IDA): ILK binds integrin beta cytoplasmic tails, central to its focal-adhesion scaffold role.
Reason: Core, experimentally supported interaction defining ILK's adhesion function.
|
|
GO:0005515
protein binding
|
IPI
PMID:20005845 The pseudoactive site of ILK is essential for its binding to... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:20005845) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005524
ATP binding
|
IDA
PMID:20005845 The pseudoactive site of ILK is essential for its binding to... |
KEEP AS NON CORE |
Summary: ATP binding: ILK's pseudokinase domain still binds ATP/Mg despite lacking catalytic activity (IDA).
Reason: Real (structurally demonstrated) nucleotide binding but not catalytic; non-core for a scaffold.
|
|
GO:0005524
ATP binding
|
IDA
PMID:21524996 Biochemical, proteomic, structural, and thermodynamic charac... |
KEEP AS NON CORE |
Summary: ATP binding: ILK's pseudokinase domain still binds ATP/Mg despite lacking catalytic activity (IDA).
Reason: Real (structurally demonstrated) nucleotide binding but not catalytic; non-core for a scaffold.
|
|
GO:0043123
positive regulation of canonical NF-kappaB signal transduction
|
IMP
PMID:21343177 Thymosin beta4 inhibits TNF-alpha-induced NF-kappaB activati... |
KEEP AS NON CORE |
Summary: positive regulation of canonical NF-kappaB signal transduction: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:1900026
positive regulation of substrate adhesion-dependent cell spreading
|
IGI
PMID:30254023 Kindlin-2 interacts with a highly conserved surface of ILK t... |
ACCEPT |
Summary: positive regulation of substrate adhesion-dependent cell spreading: a core biological process for ILK.
Reason: Core process consistent with ILK's established function.
|
|
GO:0000902
cell morphogenesis
|
IMP
PMID:30254023 Kindlin-2 interacts with a highly conserved surface of ILK t... |
KEEP AS NON CORE |
Summary: cell morphogenesis: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0005515
protein binding
|
IPI
PMID:30254023 Kindlin-2 interacts with a highly conserved surface of ILK t... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:30254023) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0005925
focal adhesion
|
IDA
PMID:30254023 Kindlin-2 interacts with a highly conserved surface of ILK t... |
ACCEPT |
Summary: focal adhesion: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0005515
protein binding
|
IPI
PMID:15817463 Actopaxin interacts with TESK1 to regulate cell spreading on... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:15817463) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0033209
tumor necrosis factor-mediated signaling pathway
|
IMP
PMID:21343177 Thymosin beta4 inhibits TNF-alpha-induced NF-kappaB activati... |
KEEP AS NON CORE |
Summary: tumor necrosis factor-mediated signaling pathway: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0009967
positive regulation of signal transduction
|
IMP
PMID:10637513 Integrin-linked kinase regulates phosphorylation of serine 4... |
KEEP AS NON CORE |
Summary: positive regulation of signal transduction: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0005515
protein binding
|
IPI
PMID:20926685 The roles of two distinct regions of PINCH-1 in the regulati... |
KEEP AS NON CORE |
Summary: Specific protein interaction (PMID:20926685) consistent with ILK's scaffold/adapter role.
Reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term is itself uninformative.
|
|
GO:0070527
platelet aggregation
|
HMP
PMID:23382103 Platelet proteome analysis reveals integrin-dependent aggreg... |
KEEP AS NON CORE |
Summary: platelet aggregation: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0005925
focal adhesion
|
HDA
PMID:21423176 Analysis of the myosin-II-responsive focal adhesion proteome... |
ACCEPT |
Summary: focal adhesion: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0016020
membrane
|
HDA
PMID:19946888 Defining the membrane proteome of NK cells. |
KEEP AS NON CORE |
Summary: membrane: a secondary/broad localization for ILK.
Reason: Plausible but non-core (broad term or context-specific).
|
|
GO:0005829
cytosol
|
TAS
Reactome:R-HSA-432897 |
ACCEPT |
Summary: cytosol: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0005829
cytosol
|
TAS
Reactome:R-HSA-446391 |
ACCEPT |
Summary: cytosol: a core subcellular location for ILK.
Reason: Correct core localization.
|
|
GO:0019901
protein kinase binding
|
IPI
PMID:19118217 EphA1 interacts with integrin-linked kinase and regulates ce... |
KEEP AS NON CORE |
Summary: Protein kinase binding (IPI): ILK scaffolds/associates with kinases at adhesions.
Reason: Specific interaction supporting the scaffold role; non-core.
|
|
GO:0034446
substrate adhesion-dependent cell spreading
|
IMP
PMID:19118217 EphA1 interacts with integrin-linked kinase and regulates ce... |
ACCEPT |
Summary: substrate adhesion-dependent cell spreading: a core biological process for ILK.
Reason: Core process consistent with ILK's established function.
|
|
GO:0045893
positive regulation of DNA-templated transcription
|
IMP
PMID:20018240 Type I collagen promotes epithelial-mesenchymal transition t... |
KEEP AS NON CORE |
Summary: positive regulation of DNA-templated transcription: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0090263
positive regulation of canonical Wnt signaling pathway
|
IMP
PMID:20018240 Type I collagen promotes epithelial-mesenchymal transition t... |
KEEP AS NON CORE |
Summary: positive regulation of canonical Wnt signaling pathway: process annotation for ILK.
Reason: Valid but non-core / secondary.
|
|
GO:0007160
cell-matrix adhesion
|
TAS
PMID:8538749 Regulation of cell adhesion and anchorage-dependent growth b... |
ACCEPT |
Summary: cell-matrix adhesion: a core biological process for ILK.
Reason: Core process consistent with ILK's established function.
|
|
GO:0007229
integrin-mediated signaling pathway
|
IDA
PMID:9366252 Identification and characterization of a mouse protein kinas... |
ACCEPT |
Summary: integrin-mediated signaling pathway: a core biological process for ILK.
Reason: Core process consistent with ILK's established function.
|
Q: Given ILK is a pseudokinase, are any residual phenotypes attributed to 'ILK kinase activity' in older literature explained entirely by its scaffolding of bona fide kinases?
Experiment: Rescue ILK-null cells with wild-type vs IPP-binding-deficient ILK and assess focal-adhesion assembly and spreading.
Hypothesis: ILK's adhesion functions are scaffold-dependent and kinase-activity-independent.
# yaml-language-server: $schema=../../../src/ai_gene_review/schema/gene_review.yaml
id: Q13418
gene_symbol: ILK
product_type: PROTEIN
status: DRAFT
taxon:
id: NCBITaxon:9606
label: Homo sapiens
description: ILK (integrin-linked kinase; now annotated by UniProt as 'Scaffold protein ILK') is a focal-adhesion
protein of the protein-kinase superfamily that is catalytically dead - a pseudokinase. Rather than phosphorylating
substrates, it functions as the central scaffold of the heterotrimeric IPP (ILK-PINCH-PARVIN) complex,
linking integrin cytoplasmic tails to the actin cytoskeleton and coordinating cell-matrix adhesion,
spreading, and integrin/growth-factor signaling. Its pseudokinase domain still binds ATP/Mg but performs
no catalysis. ILK is essential for focal-adhesion organization, actin filament assembly, and is implicated
in cardiac/muscle function and cancer.
alternative_products:
- name: '1'
id: Q13418-1
- name: '2'
id: Q13418-2
sequence_note: VSP_054920
- name: '3'
id: Q13418-3
sequence_note: VSP_055925
existing_annotations:
- term:
id: GO:0005737
label: cytoplasm
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: is_active_in
review:
summary: 'cytoplasm: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0007229
label: integrin-mediated signaling pathway
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: involved_in
review:
summary: 'integrin-mediated signaling pathway: a core biological process for ILK.'
action: ACCEPT
reason: Core process consistent with ILK's established function.
- term:
id: GO:0005102
label: signaling receptor binding
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: enables
review:
summary: signaling receptor binding.
action: KEEP_AS_NON_CORE
reason: Retained as non-core.
- term:
id: GO:0030154
label: cell differentiation
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: involved_in
review:
summary: 'cell differentiation: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0030674
label: protein-macromolecule adaptor activity
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: enables
review:
summary: 'Protein-macromolecule adaptor activity: ILK''s actual molecular function as the scaffold
of the IPP (ILK-PINCH-PARVIN) complex linking integrins to the actin cytoskeleton.'
action: ACCEPT
reason: Core molecular function for the pseudokinase scaffold. Retain.
supported_by:
- reference_id: file:human/ILK/ILK-uniprot.txt
supporting_text: Scaffold protein which mediates protein-protein interactions
- term:
id: GO:0005925
label: focal adhesion
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: is_active_in
review:
summary: 'focal adhesion: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0007160
label: cell-matrix adhesion
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: involved_in
review:
summary: 'cell-matrix adhesion: a core biological process for ILK.'
action: ACCEPT
reason: Core process consistent with ILK's established function.
- term:
id: GO:0034446
label: substrate adhesion-dependent cell spreading
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: involved_in
review:
summary: 'substrate adhesion-dependent cell spreading: a core biological process for ILK.'
action: ACCEPT
reason: Core process consistent with ILK's established function.
- term:
id: GO:0004672
label: protein kinase activity
evidence_type: IEA
original_reference_id: GO_REF:0000002
qualifier: enables
review:
summary: Positive 'protein kinase activity' (IEA) propagated from the protein-kinase-superfamily (TKL)
signature. ILK is a pseudokinase with a degenerate catalytic site and no kinase activity.
action: REMOVE
reason: 'Electronic over-propagation refuted on biological grounds: ILK is established as a catalytically
dead scaffold (the curated NOT|ser/thr kinase). Remove.'
supported_by:
- reference_id: file:human/ILK/ILK-uniprot.txt
supporting_text: Now thought to be a pseudokinase which does not have kinase activity and which
functions solely as a scaffold protein
- term:
id: GO:0005524
label: ATP binding
evidence_type: IEA
original_reference_id: GO_REF:0000002
qualifier: enables
review:
summary: 'ATP binding: ILK''s pseudokinase domain still binds ATP/Mg despite lacking catalytic activity
(IDA).'
action: KEEP_AS_NON_CORE
reason: Real (structurally demonstrated) nucleotide binding but not catalytic; non-core for a scaffold.
- term:
id: GO:0005634
label: nucleus
evidence_type: IEA
original_reference_id: GO_REF:0000044
qualifier: located_in
review:
summary: 'nucleus: a secondary/broad localization for ILK.'
action: KEEP_AS_NON_CORE
reason: Plausible but non-core (broad term or context-specific).
- term:
id: GO:0005737
label: cytoplasm
evidence_type: IEA
original_reference_id: GO_REF:0000044
qualifier: located_in
review:
summary: 'cytoplasm: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0005813
label: centrosome
evidence_type: IEA
original_reference_id: GO_REF:0000044
qualifier: located_in
review:
summary: 'centrosome: a secondary/broad localization for ILK.'
action: KEEP_AS_NON_CORE
reason: Plausible but non-core (broad term or context-specific).
- term:
id: GO:0005886
label: plasma membrane
evidence_type: IEA
original_reference_id: GO_REF:0000044
qualifier: located_in
review:
summary: 'plasma membrane: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0005925
label: focal adhesion
evidence_type: IEA
original_reference_id: GO_REF:0000120
qualifier: located_in
review:
summary: 'focal adhesion: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0005938
label: cell cortex
evidence_type: IEA
original_reference_id: GO_REF:0000044
qualifier: located_in
review:
summary: 'cell cortex: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0009653
label: anatomical structure morphogenesis
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: 'anatomical structure morphogenesis: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0030017
label: sarcomere
evidence_type: IEA
original_reference_id: GO_REF:0000044
qualifier: located_in
review:
summary: 'sarcomere: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0030027
label: lamellipodium
evidence_type: IEA
original_reference_id: GO_REF:0000120
qualifier: located_in
review:
summary: 'lamellipodium: a secondary/broad localization for ILK.'
action: KEEP_AS_NON_CORE
reason: Plausible but non-core (broad term or context-specific).
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:11331308
qualifier: enables
review:
summary: Specific protein interaction (PMID:11331308) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:11331582
qualifier: enables
review:
summary: Specific protein interaction (PMID:11331582) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:12432066
qualifier: enables
review:
summary: Specific protein interaction (PMID:12432066) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:16189514
qualifier: enables
review:
summary: Specific protein interaction (PMID:16189514) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:16936772
qualifier: enables
review:
summary: Specific protein interaction (PMID:16936772) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:17003112
qualifier: enables
review:
summary: Specific protein interaction (PMID:17003112) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:17553790
qualifier: enables
review:
summary: Specific protein interaction (PMID:17553790) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:18339839
qualifier: enables
review:
summary: Specific protein interaction (PMID:18339839) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:19074270
qualifier: enables
review:
summary: Specific protein interaction (PMID:19074270) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:21516116
qualifier: enables
review:
summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:21516116).
action: MARK_AS_OVER_ANNOTATED
reason: High-throughput protein binding is uninformative about molecular function (curation guideline).
Over-annotation.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:21643011
qualifier: enables
review:
summary: Specific protein interaction (PMID:21643011) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:22939624
qualifier: enables
review:
summary: Specific protein interaction (PMID:22939624) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:23414517
qualifier: enables
review:
summary: Specific protein interaction (PMID:23414517) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:23455922
qualifier: enables
review:
summary: Specific protein interaction (PMID:23455922) consistent with ILK's scaffold/adapter role.
action: MARK_AS_OVER_ANNOTATED
reason: Large-scale standardized AP-MS protein-complex study; high-throughput generic protein binding,
grouped with the other HT-screen over-annotations for consistency.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:23877428
qualifier: enables
review:
summary: Specific protein interaction (PMID:23877428) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:25416956
qualifier: enables
review:
summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:25416956).
action: MARK_AS_OVER_ANNOTATED
reason: High-throughput protein binding is uninformative about molecular function (curation guideline).
Over-annotation.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:25502805
qualifier: enables
review:
summary: Specific protein interaction (PMID:25502805) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:25852190
qualifier: enables
review:
summary: Specific protein interaction (PMID:25852190) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:26496610
qualifier: enables
review:
summary: Specific protein interaction (PMID:26496610) consistent with ILK's scaffold/adapter role.
action: MARK_AS_OVER_ANNOTATED
reason: Large-scale quantitative interactome study ('A human interactome in three quantitative dimensions');
generic protein binding from a high-throughput screen is uninformative about molecular function.
Grouped with the other HT-screen over-annotations.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:26972000
qualifier: enables
review:
summary: Specific protein interaction (PMID:26972000) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:28514442
qualifier: enables
review:
summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:28514442).
action: MARK_AS_OVER_ANNOTATED
reason: High-throughput protein binding is uninformative about molecular function (curation guideline).
Over-annotation.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:31515488
qualifier: enables
review:
summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:31515488).
action: MARK_AS_OVER_ANNOTATED
reason: High-throughput protein binding is uninformative about molecular function (curation guideline).
Over-annotation.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:32296183
qualifier: enables
review:
summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:32296183).
action: MARK_AS_OVER_ANNOTATED
reason: High-throughput protein binding is uninformative about molecular function (curation guideline).
Over-annotation.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:32707033
qualifier: enables
review:
summary: Specific protein interaction (PMID:32707033) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:33961781
qualifier: enables
review:
summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:33961781).
action: MARK_AS_OVER_ANNOTATED
reason: High-throughput protein binding is uninformative about molecular function (curation guideline).
Over-annotation.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:35271311
qualifier: enables
review:
summary: Specific protein interaction (PMID:35271311) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:36931259
qualifier: enables
review:
summary: Specific protein interaction (PMID:36931259) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:40205054
qualifier: enables
review:
summary: Generic 'protein binding' from a high-throughput interactome screen (PMID:40205054).
action: MARK_AS_OVER_ANNOTATED
reason: High-throughput protein binding is uninformative about molecular function (curation guideline).
Over-annotation.
- term:
id: GO:0003151
label: outflow tract morphogenesis
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: 'outflow tract morphogenesis: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0007229
label: integrin-mediated signaling pathway
evidence_type: IEA
original_reference_id: GO_REF:0000120
qualifier: involved_in
review:
summary: 'integrin-mediated signaling pathway: a core biological process for ILK.'
action: ACCEPT
reason: Core process consistent with ILK's established function.
- term:
id: GO:0030513
label: positive regulation of BMP signaling pathway
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: 'positive regulation of BMP signaling pathway: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0045669
label: positive regulation of osteoblast differentiation
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: 'positive regulation of osteoblast differentiation: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0070836
label: caveola assembly
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: 'caveola assembly: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0072697
label: protein localization to cell cortex
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: 'protein localization to cell cortex: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: ILK's primary site is focal adhesions, not the broad cell cortex; keep as non-core for consistency
with the caveola assembly annotation.
- term:
id: GO:0005925
label: focal adhesion
evidence_type: NAS
original_reference_id: PMID:35089438
qualifier: located_in
review:
summary: 'focal adhesion: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0051017
label: actin filament bundle assembly
evidence_type: IDA
original_reference_id: PMID:30367047
qualifier: involved_in
review:
summary: 'actin filament bundle assembly: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0051639
label: actin filament network formation
evidence_type: IDA
original_reference_id: PMID:30367047
qualifier: involved_in
review:
summary: 'actin filament network formation: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0005829
label: cytosol
evidence_type: IDA
original_reference_id: GO_REF:0000052
qualifier: located_in
review:
summary: 'cytosol: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0005925
label: focal adhesion
evidence_type: IDA
original_reference_id: GO_REF:0000052
qualifier: located_in
review:
summary: 'focal adhesion: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0005886
label: plasma membrane
evidence_type: EXP
original_reference_id: PMID:11402068
qualifier: located_in
review:
summary: 'plasma membrane: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0007229
label: integrin-mediated signaling pathway
evidence_type: ISS
original_reference_id: PMID:20675382
qualifier: involved_in
review:
summary: 'integrin-mediated signaling pathway: a core biological process for ILK.'
action: ACCEPT
reason: Core process consistent with ILK's established function.
- term:
id: GO:0000785
label: chromatin
evidence_type: IDA
original_reference_id: PMID:17420447
qualifier: located_in
review:
summary: 'chromatin: a secondary/broad localization for ILK.'
action: KEEP_AS_NON_CORE
reason: Plausible but non-core (broad term or context-specific).
- term:
id: GO:0005634
label: nucleus
evidence_type: IDA
original_reference_id: PMID:17420447
qualifier: located_in
review:
summary: 'nucleus: a secondary/broad localization for ILK.'
action: KEEP_AS_NON_CORE
reason: Plausible but non-core (broad term or context-specific).
- term:
id: GO:0005737
label: cytoplasm
evidence_type: IDA
original_reference_id: PMID:17420447
qualifier: located_in
review:
summary: 'cytoplasm: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0005813
label: centrosome
evidence_type: IDA
original_reference_id: PMID:18283114
qualifier: located_in
review:
summary: 'centrosome: a secondary/broad localization for ILK.'
action: KEEP_AS_NON_CORE
reason: Plausible but non-core (broad term or context-specific).
- term:
id: GO:0007052
label: mitotic spindle organization
evidence_type: IMP
original_reference_id: PMID:18283114
qualifier: involved_in
review:
summary: 'mitotic spindle organization: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0000287
label: magnesium ion binding
evidence_type: IDA
original_reference_id: PMID:20005845
qualifier: enables
review:
summary: Magnesium ion binding (IDA) by the pseudokinase domain, associated with ATP binding.
action: KEEP_AS_NON_CORE
reason: Real but non-core (no catalytic role).
- term:
id: GO:0004674
label: protein serine/threonine kinase activity
evidence_type: IDA
original_reference_id: PMID:20005845
qualifier: enables
negated: true
review:
summary: 'NOT: ILK does not have protein serine/threonine kinase activity. Structural and biochemical
work established it as a pseudokinase scaffold (UniProt now names it ''Scaffold protein ILK'').'
action: ACCEPT
reason: Correct, important negation supported by direct evidence (IDA). Retain.
supported_by: &id001
- reference_id: file:human/ILK/ILK-uniprot.txt
supporting_text: Now thought to be a pseudokinase which does not have kinase activity and which
functions solely as a scaffold protein
- term:
id: GO:0004674
label: protein serine/threonine kinase activity
evidence_type: IDA
original_reference_id: PMID:21524996
qualifier: enables
negated: true
review:
summary: 'NOT: ILK does not have protein serine/threonine kinase activity. Structural and biochemical
work established it as a pseudokinase scaffold (UniProt now names it ''Scaffold protein ILK'').'
action: ACCEPT
reason: Correct, important negation supported by direct evidence (IDA). Retain.
supported_by: *id001
- term:
id: GO:0005178
label: integrin binding
evidence_type: IDA
original_reference_id: PMID:20005845
qualifier: enables
review:
summary: 'Integrin binding (IDA): ILK binds integrin beta cytoplasmic tails, central to its focal-adhesion
scaffold role.'
action: ACCEPT
reason: Core, experimentally supported interaction defining ILK's adhesion function.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:20005845
qualifier: enables
review:
summary: Specific protein interaction (PMID:20005845) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005524
label: ATP binding
evidence_type: IDA
original_reference_id: PMID:20005845
qualifier: enables
review:
summary: 'ATP binding: ILK''s pseudokinase domain still binds ATP/Mg despite lacking catalytic activity
(IDA).'
action: KEEP_AS_NON_CORE
reason: Real (structurally demonstrated) nucleotide binding but not catalytic; non-core for a scaffold.
- term:
id: GO:0005524
label: ATP binding
evidence_type: IDA
original_reference_id: PMID:21524996
qualifier: enables
review:
summary: 'ATP binding: ILK''s pseudokinase domain still binds ATP/Mg despite lacking catalytic activity
(IDA).'
action: KEEP_AS_NON_CORE
reason: Real (structurally demonstrated) nucleotide binding but not catalytic; non-core for a scaffold.
- term:
id: GO:0043123
label: positive regulation of canonical NF-kappaB signal transduction
evidence_type: IMP
original_reference_id: PMID:21343177
qualifier: involved_in
review:
summary: 'positive regulation of canonical NF-kappaB signal transduction: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:1900026
label: positive regulation of substrate adhesion-dependent cell spreading
evidence_type: IGI
original_reference_id: PMID:30254023
qualifier: involved_in
review:
summary: 'positive regulation of substrate adhesion-dependent cell spreading: a core biological process
for ILK.'
action: ACCEPT
reason: Core process consistent with ILK's established function.
- term:
id: GO:0000902
label: cell morphogenesis
evidence_type: IMP
original_reference_id: PMID:30254023
qualifier: acts_upstream_of_or_within
review:
summary: 'cell morphogenesis: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:30254023
qualifier: enables
review:
summary: Specific protein interaction (PMID:30254023) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0005925
label: focal adhesion
evidence_type: IDA
original_reference_id: PMID:30254023
qualifier: located_in
review:
summary: 'focal adhesion: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:15817463
qualifier: enables
review:
summary: Specific protein interaction (PMID:15817463) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0033209
label: tumor necrosis factor-mediated signaling pathway
evidence_type: IMP
original_reference_id: PMID:21343177
qualifier: involved_in
review:
summary: 'tumor necrosis factor-mediated signaling pathway: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0009967
label: positive regulation of signal transduction
evidence_type: IMP
original_reference_id: PMID:10637513
qualifier: involved_in
review:
summary: 'positive regulation of signal transduction: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:20926685
qualifier: enables
review:
summary: Specific protein interaction (PMID:20926685) consistent with ILK's scaffold/adapter role.
action: KEEP_AS_NON_CORE
reason: Real interaction kept as non-core supporting evidence; the generic 'protein binding' term
is itself uninformative.
- term:
id: GO:0070527
label: platelet aggregation
evidence_type: HMP
original_reference_id: PMID:23382103
qualifier: involved_in
review:
summary: 'platelet aggregation: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0005925
label: focal adhesion
evidence_type: HDA
original_reference_id: PMID:21423176
qualifier: located_in
review:
summary: 'focal adhesion: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0016020
label: membrane
evidence_type: HDA
original_reference_id: PMID:19946888
qualifier: located_in
review:
summary: 'membrane: a secondary/broad localization for ILK.'
action: KEEP_AS_NON_CORE
reason: Plausible but non-core (broad term or context-specific).
- term:
id: GO:0005829
label: cytosol
evidence_type: TAS
original_reference_id: Reactome:R-HSA-432897
qualifier: located_in
review:
summary: 'cytosol: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0005829
label: cytosol
evidence_type: TAS
original_reference_id: Reactome:R-HSA-446391
qualifier: located_in
review:
summary: 'cytosol: a core subcellular location for ILK.'
action: ACCEPT
reason: Correct core localization.
- term:
id: GO:0019901
label: protein kinase binding
evidence_type: IPI
original_reference_id: PMID:19118217
qualifier: enables
review:
summary: 'Protein kinase binding (IPI): ILK scaffolds/associates with kinases at adhesions.'
action: KEEP_AS_NON_CORE
reason: Specific interaction supporting the scaffold role; non-core.
- term:
id: GO:0034446
label: substrate adhesion-dependent cell spreading
evidence_type: IMP
original_reference_id: PMID:19118217
qualifier: involved_in
review:
summary: 'substrate adhesion-dependent cell spreading: a core biological process for ILK.'
action: ACCEPT
reason: Core process consistent with ILK's established function.
- term:
id: GO:0045893
label: positive regulation of DNA-templated transcription
evidence_type: IMP
original_reference_id: PMID:20018240
qualifier: involved_in
review:
summary: 'positive regulation of DNA-templated transcription: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0090263
label: positive regulation of canonical Wnt signaling pathway
evidence_type: IMP
original_reference_id: PMID:20018240
qualifier: involved_in
review:
summary: 'positive regulation of canonical Wnt signaling pathway: process annotation for ILK.'
action: KEEP_AS_NON_CORE
reason: Valid but non-core / secondary.
- term:
id: GO:0007160
label: cell-matrix adhesion
evidence_type: TAS
original_reference_id: PMID:8538749
qualifier: involved_in
review:
summary: 'cell-matrix adhesion: a core biological process for ILK.'
action: ACCEPT
reason: Core process consistent with ILK's established function.
- term:
id: GO:0007229
label: integrin-mediated signaling pathway
evidence_type: IDA
original_reference_id: PMID:9366252
qualifier: acts_upstream_of_or_within
review:
summary: 'integrin-mediated signaling pathway: a core biological process for ILK.'
action: ACCEPT
reason: Core process consistent with ILK's established function.
references:
- id: GO_REF:0000002
title: GO annotation through association of InterPro records with GO terms
findings: []
- id: GO_REF:0000024
title: Manual transfer of experimentally-verified annotations to orthologs by curator judgment
findings: []
- id: GO_REF:0000033
title: Annotation inferences using phylogenetic trees
findings: []
- id: GO_REF:0000044
title: GO annotation based on UniProtKB/Swiss-Prot Subcellular Location vocabulary mapping
findings: []
- id: GO_REF:0000052
title: GO annotation based on curation of immunofluorescence data (HPA)
findings: []
- id: GO_REF:0000107
title: Automatic transfer of experimentally verified manual GO annotation data to orthologs using Ensembl
Compara
findings: []
- id: GO_REF:0000108
title: Automatic assignment of GO terms using logical inference, based on inter-ontology links
findings: []
- id: GO_REF:0000117
title: Automatic GO annotation from UniProtKB-KW mapping
findings: []
- id: GO_REF:0000120
title: Combined Automated Annotation using Multiple IEA Methods
findings: []
- id: file:human/ILK/ILK-uniprot.txt
title: UniProt entry for ILK
findings: []
- id: PMID:10637513
title: Integrin-linked kinase regulates phosphorylation of serine 473 of protein kinase B by an indirect
mechanism.
findings: []
- id: PMID:11331308
title: A new focal adhesion protein that interacts with integrin-linked kinase and regulates cell adhesion
and spreading.
findings: []
- id: PMID:11331582
title: Modulation of integrin signal transduction by ILKAP, a protein phosphatase 2C associating with
the integrin-linked kinase, ILK1.
findings: []
- id: PMID:11402068
title: A novel integrin-linked kinase-binding protein, affixin, is involved in the early stage of cell-substrate
interaction.
findings: []
- id: PMID:12432066
title: Assembly of the PINCH-ILK-CH-ILKBP complex precedes and is essential for localization of each
component to cell-matrix adhesion sites.
findings: []
- id: PMID:15817463
title: Actopaxin interacts with TESK1 to regulate cell spreading on fibronectin.
findings: []
- id: PMID:16189514
title: Towards a proteome-scale map of the human protein-protein interaction network.
findings: []
- id: PMID:16936772
title: Integrin-linked kinase interacts with caspase-9 and -8 in an adhesion-dependent manner for promoting
radiation-induced apoptosis in human leukemia cells.
findings: []
- id: PMID:17003112
title: Posttranslational hydroxylation of ankyrin repeats in IkappaB proteins by the hypoxia-inducible
factor (HIF) asparaginyl hydroxylase, factor inhibiting HIF (FIH).
findings: []
- id: PMID:17420447
title: Phosphorylation-dependent regulation of nuclear localization and functions of integrin-linked
kinase.
findings: []
- id: PMID:17553790
title: Interaction of integrin-linked kinase with the kidney chloride/bicarbonate exchanger, kAE1.
findings: []
- id: PMID:18283114
title: Integrin-linked kinase localizes to the centrosome and regulates mitotic spindle organization.
findings: []
- id: PMID:18339839
title: Rictor and integrin-linked kinase interact and regulate Akt phosphorylation and cancer cell survival.
findings: []
- id: PMID:19074270
title: The structural basis of integrin-linked kinase-PINCH interactions.
findings: []
- id: PMID:19118217
title: EphA1 interacts with integrin-linked kinase and regulates cell morphology and motility.
findings: []
- id: PMID:19946888
title: Defining the membrane proteome of NK cells.
findings: []
- id: PMID:20005845
title: The pseudoactive site of ILK is essential for its binding to alpha-Parvin and localization to
focal adhesions.
findings: []
- id: PMID:20018240
title: Type I collagen promotes epithelial-mesenchymal transition through ILK-dependent activation of
NF-kappaB and LEF-1.
findings: []
- id: PMID:20675382
title: CYR61 regulates BMP-2-dependent osteoblast differentiation through the {alpha}v{beta}3 integrin/integrin-linked
kinase/ERK pathway.
findings: []
- id: PMID:20926685
title: The roles of two distinct regions of PINCH-1 in the regulation of cell attachment and spreading.
findings: []
- id: PMID:21343177
title: Thymosin beta4 inhibits TNF-alpha-induced NF-kappaB activation, IL-8 expression, and the sensitizing
effects by its partners PINCH-1 and ILK.
findings: []
- id: PMID:21423176
title: Analysis of the myosin-II-responsive focal adhesion proteome reveals a role for β-Pix in negative
regulation of focal adhesion maturation.
findings: []
- id: PMID:21516116
title: Next-generation sequencing to generate interactome datasets.
findings: []
- id: PMID:21524996
title: 'Biochemical, proteomic, structural, and thermodynamic characterizations of integrin-linked kinase
(ILK): cross-validation of the pseudokinase.'
findings: []
- id: PMID:21643011
title: Phosphorylation and interaction of myopodin by integrin-link kinase lead to suppression of cell
growth and motility in prostate cancer cells.
findings: []
- id: PMID:22939624
title: Quantitative analysis of HSP90-client interactions reveals principles of substrate recognition.
findings: []
- id: PMID:23382103
title: Platelet proteome analysis reveals integrin-dependent aggregation defects in patients with myelodysplastic
syndromes.
findings: []
- id: PMID:23414517
title: 'A human skeletal muscle interactome centered on proteins involved in muscular dystrophies: LGMD
interactome.'
findings: []
- id: PMID:23455922
title: Interlaboratory reproducibility of large-scale human protein-complex analysis by standardized
AP-MS.
findings: []
- id: PMID:23877428
title: Interaction of smoothened with integrin-linked kinase in primary cilia mediates Hedgehog signalling.
findings: []
- id: PMID:25416956
title: A proteome-scale map of the human interactome network.
findings: []
- id: PMID:25502805
title: A massively parallel pipeline to clone DNA variants and examine molecular phenotypes of human
disease mutations.
findings: []
- id: PMID:25852190
title: Integrative analysis of kinase networks in TRAIL-induced apoptosis provides a source of potential
targets for combination therapy.
findings: []
- id: PMID:26496610
title: A human interactome in three quantitative dimensions organized by stoichiometries and abundances.
findings: []
- id: PMID:26972000
title: Substrate-Trapped Interactors of PHD3 and FIH Cluster in Distinct Signaling Pathways.
findings: []
- id: PMID:28514442
title: Architecture of the human interactome defines protein communities and disease networks.
findings: []
- id: PMID:30254023
title: Kindlin-2 interacts with a highly conserved surface of ILK to regulate focal adhesion localization
and cell spreading.
findings: []
- id: PMID:30367047
title: Non-catalytic signaling by pseudokinase ILK for regulating cell adhesion.
findings: []
- id: PMID:31515488
title: Extensive disruption of protein interactions by genetic variants across the allele frequency
spectrum in human populations.
findings: []
- id: PMID:32296183
title: A reference map of the human binary protein interactome.
findings: []
- id: PMID:32707033
title: Kinase Interaction Network Expands Functional and Disease Roles of Human Kinases.
findings: []
- id: PMID:33961781
title: Dual proteome-scale networks reveal cell-specific remodeling of the human interactome.
findings: []
- id: PMID:35089438
title: 'Integrin-linked kinase (ILK): the known vs. the unknown and perspectives.'
findings: []
- id: PMID:35271311
title: 'OpenCell: Endogenous tagging for the cartography of human cellular organization.'
findings: []
- id: PMID:36931259
title: A central chaperone-like role for 14-3-3 proteins in human cells.
findings: []
- id: PMID:40205054
title: Multimodal cell maps as a foundation for structural and functional genomics.
findings: []
- id: PMID:8538749
title: Regulation of cell adhesion and anchorage-dependent growth by a new beta 1-integrin-linked protein
kinase.
findings: []
- id: PMID:9366252
title: Identification and characterization of a mouse protein kinase that is highly homologous to human
integrin-linked kinase.
findings: []
- id: Reactome:R-HSA-432897
title: Reactome pathway
findings: []
- id: Reactome:R-HSA-446391
title: Reactome pathway
findings: []
aliases:
- ILK1
- ILK2
- P59-ILK
- Integrin-linked protein kinase
- Scaffold protein ILK
core_functions:
- description: Catalytically dead pseudokinase that acts as the scaffold of the IPP (ILK-PINCH-PARVIN)
complex at focal adhesions, coupling integrins to the actin cytoskeleton and coordinating cell-matrix
adhesion and spreading.
molecular_function:
id: GO:0030674
label: protein-macromolecule adaptor activity
directly_involved_in:
- id: GO:0007229
label: integrin-mediated signaling pathway
- id: GO:0007160
label: cell-matrix adhesion
locations:
- id: GO:0005925
label: focal adhesion
supported_by:
- reference_id: file:human/ILK/ILK-uniprot.txt
supporting_text: Now thought to be a pseudokinase which does not have kinase activity and which functions
solely as a scaffold protein
suggested_questions:
- question: Given ILK is a pseudokinase, are any residual phenotypes attributed to 'ILK kinase activity'
in older literature explained entirely by its scaffolding of bona fide kinases?
suggested_experiments:
- hypothesis: ILK's adhesion functions are scaffold-dependent and kinase-activity-independent.
description: Rescue ILK-null cells with wild-type vs IPP-binding-deficient ILK and assess focal-adhesion
assembly and spreading.