GNA11

UniProt ID: P29992
Organism: Homo sapiens
Review Status: COMPLETE
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Gene Description

GNA11 encodes G alpha 11, a Gq-family heterotrimeric G protein alpha subunit. Receptor-stimulated GDP/GTP exchange activates PLC beta signaling, linking extracellular stimuli to inositol trisphosphate, diacylglycerol and calcium-dependent responses. G11 acts on the cytoplasmic plasma-membrane surface and shares some physiological roles with Gq, including endocrine, vascular and developmental signaling. Receptor specificity, cellular expression and compensatory overlap determine which paralog contributes in each tissue.

Existing Annotations Review

GO Term Evidence Action Reason
GO:0001508 action potential
IBA
GO_REF:0000033
KEEP AS NON CORE
Summary: The PAINT node PTN008303190 is seeded by native mouse Gna11 evidence for action-potential modulation.
Reason: Retain this conserved signaling role as contextual, not direct pore-forming activity or a claim that human G11 is required for all action potentials.
Supporting Evidence:
GO:0001664 G protein-coupled receptor binding
IEA
GO_REF:0000002
ACCEPT
Summary: Receptor coupling and the M1–G11 structure support GPCR recognition and PLC-activating signaling.
Reason: The 6OIJ structural G11 construct is predominantly human P29992 but contains a Gi1 N-terminal segment; it is direct mechanistic evidence with that construct limit, not a fully native sequence assay.
Supporting Evidence:
GO:0001750 photoreceptor outer segment
ISS
GO_REF:0000024
UNDECIDED
Summary: Mouse retinal evidence does not resolve the precise transferred human outer-segment location.
Reason: The precise human GNA11 outer-segment localization remains unresolved. PMID:12196552 reports chicken Gq/11 immunolocalization with G11-associated opsin signaling. Full PMID:24958088 adds adult mouse retinal localization, including Gnaq-selective cone-photoreceptor staining and cross-reactive Gnaq/11 staining, but the reported cone/photoreceptor-layer signal does not independently resolve this exact human subcompartment for each isoform. Its melanopsin experiments concern inner-retinal ganglion cells, not rod/cone outer segments. PMID:24870805 examines neonatal ipRGC expression and function, which likewise does not settle outer-segment residence. These limitations do not demonstrate absence.
Propagation Review
Root cause: UNRESOLVED
Sources checked:
UniProtKB:Q5F3B5 UNRESOLVED
The precise human GNA11 outer-segment localization remains unresolved. PMID:12196552 reports chicken Gq/11 immunolocalization with G11-associated opsin signaling. Full PMID:24958088 adds adult mouse retinal localization, including Gnaq-selective cone-photoreceptor staining and cross-reactive Gnaq/11 staining, but the reported cone/photoreceptor-layer signal does not independently resolve this exact human subcompartment for each isoform. Its melanopsin experiments concern inner-retinal ganglion cells, not rod/cone outer segments. PMID:24870805 examines neonatal ipRGC expression and function, which likewise does not settle outer-segment residence. These limitations do not demonstrate absence.
Supporting Evidence:
PMID:24958088
These data confirm that Gnaq and Gna11 convey the melanopsin signal in Neuro-2A cells.
PMID:24870805
Another possibility is that there is compensatory upregulation from other remaining Gq/11 family members in the tested mutant lines.
GO:0001750 photoreceptor outer segment
ISS
GO_REF:0000024
UNDECIDED
Summary: Mouse retinal evidence does not resolve the precise transferred human outer-segment location.
Reason: The precise human GNA11 outer-segment localization remains unresolved. PMID:12196552 reports chicken Gq/11 immunolocalization with G11-associated opsin signaling. Full PMID:24958088 adds adult mouse retinal localization, including Gnaq-selective cone-photoreceptor staining and cross-reactive Gnaq/11 staining, but the reported cone/photoreceptor-layer signal does not independently resolve this exact human subcompartment for each isoform. Its melanopsin experiments concern inner-retinal ganglion cells, not rod/cone outer segments. PMID:24870805 examines neonatal ipRGC expression and function, which likewise does not settle outer-segment residence. These limitations do not demonstrate absence.
Propagation Review
Root cause: UNRESOLVED
Sources checked:
UniProtKB:Q71RI7 UNRESOLVED
The precise human GNA11 outer-segment localization remains unresolved. PMID:12196552 reports chicken Gq/11 immunolocalization with G11-associated opsin signaling. Full PMID:24958088 adds adult mouse retinal localization, including Gnaq-selective cone-photoreceptor staining and cross-reactive Gnaq/11 staining, but the reported cone/photoreceptor-layer signal does not independently resolve this exact human subcompartment for each isoform. Its melanopsin experiments concern inner-retinal ganglion cells, not rod/cone outer segments. PMID:24870805 examines neonatal ipRGC expression and function, which likewise does not settle outer-segment residence. These limitations do not demonstrate absence.
Supporting Evidence:
PMID:24958088
These data confirm that Gnaq and Gna11 convey the melanopsin signal in Neuro-2A cells.
PMID:24870805
Another possibility is that there is compensatory upregulation from other remaining Gq/11 family members in the tested mutant lines.
GO:0003924 GTPase activity
IEA
GO_REF:0000002
ACCEPT
Summary: GNA11 is a guanine-nucleotide-binding G alpha subunit that switches between GDP- and GTP-bound states and hydrolyzes bound GTP.
Reason: Receptor/effector biochemistry and nucleotide-state experiments support the intrinsic molecular switch. This is distinct from the GAP activity of RGS proteins; activated or nucleotide-defective mutants are controls, not substitutes for the wild-type function.
Supporting Evidence:
GO:0003924 GTPase activity
ISS
GO_REF:0000024
ACCEPT
Summary: GNA11 is a guanine-nucleotide-binding G alpha subunit that switches between GDP- and GTP-bound states and hydrolyzes bound GTP.
Reason: Receptor/effector biochemistry and nucleotide-state experiments support the intrinsic molecular switch. This is distinct from the GAP activity of RGS proteins; activated or nucleotide-defective mutants are controls, not substitutes for the wild-type function.
Supporting Evidence:
GO:0003924 GTPase activity
TAS
PMID:8530500
Interaction between G proteins and tyrosine kinases upon T c...
ACCEPT
Summary: GNA11 is a guanine-nucleotide-binding G alpha subunit that switches between GDP- and GTP-bound states and hydrolyzes bound GTP.
Reason: Receptor/effector biochemistry and nucleotide-state experiments support the intrinsic molecular switch. This is distinct from the GAP activity of RGS proteins; activated or nucleotide-defective mutants are controls, not substitutes for the wild-type function.
Supporting Evidence:
GO:0003924 GTPase activity
TAS
Reactome:R-HSA-167415
ACCEPT
Summary: GNA11 is a guanine-nucleotide-binding G alpha subunit that switches between GDP- and GTP-bound states and hydrolyzes bound GTP.
Reason: Receptor/effector biochemistry and nucleotide-state experiments support the intrinsic molecular switch. This is distinct from the GAP activity of RGS proteins; activated or nucleotide-defective mutants are controls, not substitutes for the wild-type function.
Supporting Evidence:
GO:0003925 G protein activity
IBA
GO_REF:0000033
ACCEPT
Summary: GNA11 is a guanine-nucleotide-binding G alpha subunit that switches between GDP- and GTP-bound states and hydrolyzes bound GTP.
Reason: Receptor/effector biochemistry and nucleotide-state experiments support the intrinsic molecular switch. This is distinct from the GAP activity of RGS proteins; activated or nucleotide-defective mutants are controls, not substitutes for the wild-type function.
Supporting Evidence:
GO:0003925 G protein activity
IDA
PMID:15331768
Signaling and ligand binding by recombinant neuromedin U rec...
ACCEPT
Summary: GNA11 is a guanine-nucleotide-binding G alpha subunit that switches between GDP- and GTP-bound states and hydrolyzes bound GTP.
Reason: Receptor/effector biochemistry and nucleotide-state experiments support the intrinsic molecular switch. This is distinct from the GAP activity of RGS proteins; activated or nucleotide-defective mutants are controls, not substitutes for the wild-type function.
Supporting Evidence:
GO:0003925 G protein activity
IDA
PMID:31073061
Structures of the M1 and M2 muscarinic acetylcholine recepto...
ACCEPT
Summary: GNA11 is a guanine-nucleotide-binding G alpha subunit that switches between GDP- and GTP-bound states and hydrolyzes bound GTP.
Reason: Receptor/effector biochemistry and nucleotide-state experiments support the intrinsic molecular switch. This is distinct from the GAP activity of RGS proteins; activated or nucleotide-defective mutants are controls, not substitutes for the wild-type function.
Supporting Evidence:
GO:0003925 G protein activity
IEA
GO_REF:0000120
ACCEPT
Summary: GNA11 is a guanine-nucleotide-binding G alpha subunit that switches between GDP- and GTP-bound states and hydrolyzes bound GTP.
Reason: Receptor/effector biochemistry and nucleotide-state experiments support the intrinsic molecular switch. This is distinct from the GAP activity of RGS proteins; activated or nucleotide-defective mutants are controls, not substitutes for the wild-type function.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:18703424
RGS22, a novel testis-specific regulator of G-protein signal...
REMOVE
Summary: The physical interactions are not denied.
Reason: Remove bare protein binding under the project policy while retaining specific receptor, beta/gamma and effector functions supported independently.
GO:0005525 GTP binding
IEA
GO_REF:0000117
ACCEPT
Summary: GNA11 is a guanine-nucleotide-binding G alpha subunit that switches between GDP- and GTP-bound states and hydrolyzes bound GTP.
Reason: Receptor/effector biochemistry and nucleotide-state experiments support the intrinsic molecular switch. This is distinct from the GAP activity of RGS proteins; activated or nucleotide-defective mutants are controls, not substitutes for the wild-type function.
Supporting Evidence:
GO:0005525 GTP binding
TAS
Reactome:R-HSA-167429
ACCEPT
Summary: GNA11 is a guanine-nucleotide-binding G alpha subunit that switches between GDP- and GTP-bound states and hydrolyzes bound GTP.
Reason: Receptor/effector biochemistry and nucleotide-state experiments support the intrinsic molecular switch. This is distinct from the GAP activity of RGS proteins; activated or nucleotide-defective mutants are controls, not substitutes for the wild-type function.
Supporting Evidence:
GO:0005737 cytoplasm
IBA
GO_REF:0000033
ACCEPT
Summary: The G alpha protein is an intracellular peripheral-membrane signaling component with a cytoplasmic pool.
Reason: Cytoplasm is compatible with membrane association and, where demonstrated, other intracellular pools; no exclusive localization is inferred.
Supporting Evidence:
GO:0005737 cytoplasm
IDA
PMID:18703424
RGS22, a novel testis-specific regulator of G-protein signal...
ACCEPT
Summary: The G alpha protein is an intracellular peripheral-membrane signaling component with a cytoplasmic pool.
Reason: Cytoplasm is compatible with membrane association and, where demonstrated, other intracellular pools; no exclusive localization is inferred.
Supporting Evidence:
GO:0005737 cytoplasm
IEA
GO_REF:0000044
ACCEPT
Summary: The G alpha protein is an intracellular peripheral-membrane signaling component with a cytoplasmic pool.
Reason: Cytoplasm is compatible with membrane association and, where demonstrated, other intracellular pools; no exclusive localization is inferred.
Supporting Evidence:
GO:0005737 cytoplasm
TAS
PMID:9175863
Interaction of the G-protein G11alpha with receptors and pho...
ACCEPT
Summary: The G alpha protein is an intracellular peripheral-membrane signaling component with a cytoplasmic pool.
Reason: Cytoplasm is compatible with membrane association and, where demonstrated, other intracellular pools; no exclusive localization is inferred.
Supporting Evidence:
GO:0005765 lysosomal membrane
HDA
PMID:17897319
Integral and associated lysosomal membrane proteins.
UNDECIDED
Summary: The placental lysosome-proteomics citation remains original provenance, but target-specific GNA11 enrichment/topology has not been resolved from the available source.
Reason: Plasma-membrane signaling does not exclude an additional lysosomal pool.
Supporting Evidence:
GO:0005834 heterotrimeric G-protein complex
IBA
GO_REF:0000033
ACCEPT
Summary: The GDP-state G alpha subunit associates with a G beta/gamma dimer to form a functional heterotrimer.
Reason: Receptor-coupling and structural/reconstitution experiments support this assembly and beta/gamma binding as integral functions. A particular experimental beta/gamma combination does not imply universal interchangeability.
Supporting Evidence:
GO:0005886 plasma membrane
IDA
PMID:18703424
RGS22, a novel testis-specific regulator of G-protein signal...
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
IEA
GO_REF:0000120
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Sources checked:
UniProtKB:P21278 SUPPORTS TRANSFER
The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record. Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
UniProtKB-SubCell:SL-0039 SUPPORTS TRANSFER
The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record. Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
PMID:9175863
Interaction of the G-protein G11alpha with receptors and pho...
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-111879
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-112037
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-112271
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-114558
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-114688
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-167408
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-167415
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-167419
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-167429
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-167433
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-379048
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-396996
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-397835
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-400586
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-416358
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-416516
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-418576
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-418582
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-428749
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-428750
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-428752
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-428941
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-749448
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-749452
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-750993
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-8850560
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-8964280
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-8964284
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-8964340
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-8982017
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-8982025
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-8982026
MODIFY
Summary: The independently supported plasma-membrane signaling pool lies on the cytoplasmic side, already represented separately in this record.
Reason: Refine this general membrane location while retaining other independently supported intracellular locations; the refinement does not assert exclusive residence.
Supporting Evidence:
GO:0007165 signal transduction
IEA
GO_REF:0000002
MODIFY
Summary: The protein directly transduces signals through heterotrimeric G protein-coupled receptor signaling.
Reason: Refine generic signal transduction to the established receptor pathway without excluding additional receptor-independent functions.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Sources checked:
InterPro:IPR011025 SUPPORTS TRANSFER
The protein directly transduces signals through heterotrimeric G protein-coupled receptor signaling. Refine generic signal transduction to the established receptor pathway without excluding additional receptor-independent functions.
Supporting Evidence:
GO:0007165 signal transduction
TAS
PMID:8530500
Interaction between G proteins and tyrosine kinases upon T c...
MODIFY
Summary: The protein directly transduces signals through heterotrimeric G protein-coupled receptor signaling.
Reason: Refine generic signal transduction to the established receptor pathway without excluding additional receptor-independent functions.
Supporting Evidence:
GO:0007186 G protein-coupled receptor signaling pathway
IEA
GO_REF:0000002
ACCEPT
Summary: Receptor-dependent nucleotide exchange and effector coupling establish direct participation in GPCR signaling.
Reason: Individual receptor preferences and physiological contexts must be established separately rather than inferred from the whole G protein family.
Supporting Evidence:
GO:0007188 adenylate cyclase-modulating G protein-coupled receptor signaling pathway
IBA
GO_REF:0000033
KEEP AS NON CORE
Summary: Retain the ancestral cyclase-modulating pathway capability in its broader sense: Gq/11-dependent PLC/calcium signaling can influence cAMP without direct Gs-like stimulation of adenylyl cyclase.
Reason: This is a conserved pathway inference, not a claim that every G11 receptor directly regulates every cyclase isoform.
Supporting Evidence:
GO:0007200 phospholipase C-activating G protein-coupled receptor signaling pathway
IDA
PMID:15331768
Signaling and ligand binding by recombinant neuromedin U rec...
ACCEPT
Summary: Receptor coupling and the M1–G11 structure support GPCR recognition and PLC-activating signaling.
Reason: The 6OIJ structural G11 construct is predominantly human P29992 but contains a Gi1 N-terminal segment; it is direct mechanistic evidence with that construct limit, not a fully native sequence assay.
Supporting Evidence:
GO:0007200 phospholipase C-activating G protein-coupled receptor signaling pathway
IDA
PMID:31073061
Structures of the M1 and M2 muscarinic acetylcholine recepto...
ACCEPT
Summary: Receptor coupling and the M1–G11 structure support GPCR recognition and PLC-activating signaling.
Reason: The 6OIJ structural G11 construct is predominantly human P29992 but contains a Gi1 N-terminal segment; it is direct mechanistic evidence with that construct limit, not a fully native sequence assay.
Supporting Evidence:
GO:0007200 phospholipase C-activating G protein-coupled receptor signaling pathway
IEA
GO_REF:0000120
ACCEPT
Summary: Receptor coupling and the M1–G11 structure support GPCR recognition and PLC-activating signaling.
Reason: The 6OIJ structural G11 construct is predominantly human P29992 but contains a Gi1 N-terminal segment; it is direct mechanistic evidence with that construct limit, not a fully native sequence assay.
Supporting Evidence:
GO:0007207 phospholipase C-activating G protein-coupled acetylcholine receptor signaling pathway
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: M1–G11 structural/coupling evidence supports the specific PLC-linked muscarinic pathway.
Reason: The structure uses human G11 with a Gi1 N-terminal segment, and native mouse Gq/G11 beta-cell genetics provides complementary physiological evidence.
Supporting Evidence:
GO:0007213 G protein-coupled acetylcholine receptor signaling pathway
ISS
GO_REF:0000024
MODIFY
Summary: The demonstrated muscarinic implementation is specifically PLC-activating and is already annotated separately.
Reason: Refine the broad cholinergic pathway to that supported route, without suggesting G11 binds extracellular acetylcholine.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Sources checked:
UniProtKB:Q5F3B5 SUPPORTS TRANSFER
The demonstrated muscarinic implementation is specifically PLC-activating and is already annotated separately. Refine the broad cholinergic pathway to that supported route, without suggesting G11 binds extracellular acetylcholine.
Supporting Evidence:
GO:0007213 G protein-coupled acetylcholine receptor signaling pathway
ISS
GO_REF:0000024
MODIFY
Summary: The demonstrated muscarinic implementation is specifically PLC-activating and is already annotated separately.
Reason: Refine the broad cholinergic pathway to that supported route, without suggesting G11 binds extracellular acetylcholine.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Sources checked:
UniProtKB:Q71RI7 SUPPORTS TRANSFER
The demonstrated muscarinic implementation is specifically PLC-activating and is already annotated separately. Refine the broad cholinergic pathway to that supported route, without suggesting G11 binds extracellular acetylcholine.
Supporting Evidence:
GO:0007603 phototransduction, visible light
ISS
GO_REF:0000024
KEEP AS NON CORE
Summary: Comparative mammalian experiments support a secondary phototransduction role with overlapping G-protein contributions.
Reason: Retain a secondary visible-light phototransduction role for human GNA11 as comparative functional inference, not a direct human retinal assay. Full PMID:24958088 Fig. 4 isolates endogenous mouse Gnaq and Gna11 contributions in melanopsin-expressing Neuro-2A cells: either supports the calcium response, whereas joint silencing eliminates it. Fig. 5 combines native retinal knockdown with pupil measurements and supports overlapping Gnaq/Gna11/Gna14 participation without separately establishing each isoform as necessary in vivo. This mammalian evidence supplements the older chicken source PMID:12196552. PMID:24870805 preserves responses in tested single/double knockout combinations and discusses compensation or alternative signaling; this limits necessity claims, not the demonstrated participation capacity. Neither experiment establishes an exclusive human isoform assignment or every ipRGC subtype.
Propagation Review
Root cause: NO FAILURE NON CORE
Sources checked:
UniProtKB:Q5F3B5 UNRESOLVED
The original chicken-source transfer is retained in light of independent mammalian functional evidence, not relabeled as a direct human experiment. Retain a secondary visible-light phototransduction role for human GNA11 as comparative functional inference, not a direct human retinal assay. Full PMID:24958088 Fig. 4 isolates endogenous mouse Gnaq and Gna11 contributions in melanopsin-expressing Neuro-2A cells: either supports the calcium response, whereas joint silencing eliminates it. Fig. 5 combines native retinal knockdown with pupil measurements and supports overlapping Gnaq/Gna11/Gna14 participation without separately establishing each isoform as necessary in vivo. This mammalian evidence supplements the older chicken source PMID:12196552. PMID:24870805 preserves responses in tested single/double knockout combinations and discusses compensation or alternative signaling; this limits necessity claims, not the demonstrated participation capacity. Neither experiment establishes an exclusive human isoform assignment or every ipRGC subtype.
Supporting Evidence:
PMID:24958088
These data confirm that Gnaq and Gna11 convey the melanopsin signal in Neuro-2A cells.
PMID:24870805
Another possibility is that there is compensatory upregulation from other remaining Gq/11 family members in the tested mutant lines.
GO:0007603 phototransduction, visible light
ISS
GO_REF:0000024
KEEP AS NON CORE
Summary: Comparative mammalian experiments support a secondary phototransduction role with overlapping G-protein contributions.
Reason: Retain a secondary visible-light phototransduction role for human GNA11 as comparative functional inference, not a direct human retinal assay. Full PMID:24958088 Fig. 4 isolates endogenous mouse Gnaq and Gna11 contributions in melanopsin-expressing Neuro-2A cells: either supports the calcium response, whereas joint silencing eliminates it. Fig. 5 combines native retinal knockdown with pupil measurements and supports overlapping Gnaq/Gna11/Gna14 participation without separately establishing each isoform as necessary in vivo. This mammalian evidence supplements the older chicken source PMID:12196552. PMID:24870805 preserves responses in tested single/double knockout combinations and discusses compensation or alternative signaling; this limits necessity claims, not the demonstrated participation capacity. Neither experiment establishes an exclusive human isoform assignment or every ipRGC subtype.
Propagation Review
Root cause: NO FAILURE NON CORE
Sources checked:
UniProtKB:Q71RI7 UNRESOLVED
The original chicken-source transfer is retained in light of independent mammalian functional evidence, not relabeled as a direct human experiment. Retain a secondary visible-light phototransduction role for human GNA11 as comparative functional inference, not a direct human retinal assay. Full PMID:24958088 Fig. 4 isolates endogenous mouse Gnaq and Gna11 contributions in melanopsin-expressing Neuro-2A cells: either supports the calcium response, whereas joint silencing eliminates it. Fig. 5 combines native retinal knockdown with pupil measurements and supports overlapping Gnaq/Gna11/Gna14 participation without separately establishing each isoform as necessary in vivo. This mammalian evidence supplements the older chicken source PMID:12196552. PMID:24870805 preserves responses in tested single/double knockout combinations and discusses compensation or alternative signaling; this limits necessity claims, not the demonstrated participation capacity. Neither experiment establishes an exclusive human isoform assignment or every ipRGC subtype.
Supporting Evidence:
PMID:24958088
These data confirm that Gnaq and Gna11 convey the melanopsin signal in Neuro-2A cells.
PMID:24870805
Another possibility is that there is compensatory upregulation from other remaining Gq/11 family members in the tested mutant lines.
GO:0008217 regulation of blood pressure
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Native vascular Gq/G11 signaling studies support blood-pressure regulation.
Reason: Retain this orthology-based physiological role while distinguishing combined-pathway dependence from proof that human G11 alone is indispensable.
Supporting Evidence:
GO:0009649 entrainment of circadian clock
ISS
GO_REF:0000024
UNDECIDED
Summary: Mammalian circadian assays limit necessity claims but do not independently resolve this human entrainment assignment.
Reason: The precise human GNA11 contribution to circadian entrainment remains unresolved after mammalian source review. Chicken pineal phase shifting in PMID:12196552 is a different photoreceptive implementation. PMID:24958088 measures cellular phototransduction and pupillary responses, not circadian entrainment. Full PMID:24870805 actually tests mouse wheel-running rhythms: the tested mutant combinations retain light-dark entrainment and light-pulse phase shifting; Gnaq/Gna11 double mutants show a small reduction of period lengthening in constant light. That combined-genotype effect does not separately establish human GNA11 entrainment, and normal entrainment does not demonstrate absence of a redundant contribution. Do not equate melanopsin participation with proof of every downstream circadian role.
Propagation Review
Root cause: UNRESOLVED
Sources checked:
UniProtKB:Q5F3B5 UNRESOLVED
The precise human GNA11 contribution to circadian entrainment remains unresolved after mammalian source review. Chicken pineal phase shifting in PMID:12196552 is a different photoreceptive implementation. PMID:24958088 measures cellular phototransduction and pupillary responses, not circadian entrainment. Full PMID:24870805 actually tests mouse wheel-running rhythms: the tested mutant combinations retain light-dark entrainment and light-pulse phase shifting; Gnaq/Gna11 double mutants show a small reduction of period lengthening in constant light. That combined-genotype effect does not separately establish human GNA11 entrainment, and normal entrainment does not demonstrate absence of a redundant contribution. Do not equate melanopsin participation with proof of every downstream circadian role.
Supporting Evidence:
PMID:24958088
These data confirm that Gnaq and Gna11 convey the melanopsin signal in Neuro-2A cells.
PMID:24870805
Another possibility is that there is compensatory upregulation from other remaining Gq/11 family members in the tested mutant lines.
GO:0009649 entrainment of circadian clock
ISS
GO_REF:0000024
UNDECIDED
Summary: Mammalian circadian assays limit necessity claims but do not independently resolve this human entrainment assignment.
Reason: The precise human GNA11 contribution to circadian entrainment remains unresolved after mammalian source review. Chicken pineal phase shifting in PMID:12196552 is a different photoreceptive implementation. PMID:24958088 measures cellular phototransduction and pupillary responses, not circadian entrainment. Full PMID:24870805 actually tests mouse wheel-running rhythms: the tested mutant combinations retain light-dark entrainment and light-pulse phase shifting; Gnaq/Gna11 double mutants show a small reduction of period lengthening in constant light. That combined-genotype effect does not separately establish human GNA11 entrainment, and normal entrainment does not demonstrate absence of a redundant contribution. Do not equate melanopsin participation with proof of every downstream circadian role.
Propagation Review
Root cause: UNRESOLVED
Sources checked:
UniProtKB:Q71RI7 UNRESOLVED
The precise human GNA11 contribution to circadian entrainment remains unresolved after mammalian source review. Chicken pineal phase shifting in PMID:12196552 is a different photoreceptive implementation. PMID:24958088 measures cellular phototransduction and pupillary responses, not circadian entrainment. Full PMID:24870805 actually tests mouse wheel-running rhythms: the tested mutant combinations retain light-dark entrainment and light-pulse phase shifting; Gnaq/Gna11 double mutants show a small reduction of period lengthening in constant light. That combined-genotype effect does not separately establish human GNA11 entrainment, and normal entrainment does not demonstrate absence of a redundant contribution. Do not equate melanopsin participation with proof of every downstream circadian role.
Supporting Evidence:
PMID:24958088
These data confirm that Gnaq and Gna11 convey the melanopsin signal in Neuro-2A cells.
PMID:24870805
Another possibility is that there is compensatory upregulation from other remaining Gq/11 family members in the tested mutant lines.
GO:0009898 cytoplasmic side of plasma membrane
IDA
PMID:18703424
RGS22, a novel testis-specific regulator of G-protein signal...
ACCEPT
Summary: The intracellular G alpha–beta/gamma complex contacts the cytoplasmic receptor surface and intracellular effectors.
Reason: Receptor-complex structures, membrane targeting and signaling experiments support the cytoplasmic plasma-membrane face.
Supporting Evidence:
GO:0009898 cytoplasmic side of plasma membrane
IEA
GO_REF:0000117
ACCEPT
Summary: The intracellular G alpha–beta/gamma complex contacts the cytoplasmic receptor surface and intracellular effectors.
Reason: Receptor-complex structures, membrane targeting and signaling experiments support the cytoplasmic plasma-membrane face.
Supporting Evidence:
GO:0019001 guanyl nucleotide binding
IEA
GO_REF:0000002
MODIFY
Summary: The conserved guanine-nucleotide pocket binds GTP during activation and GDP in the inactive state.
Reason: Refine the generic nucleotide-binding term to these two chemically defined ligands, preserving both halves of the switch.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Sources checked:
InterPro:IPR001019 SUPPORTS TRANSFER
The conserved guanine-nucleotide pocket binds GTP during activation and GDP in the inactive state. Refine the generic nucleotide-binding term to these two chemically defined ligands, preserving both halves of the switch.
Proposed replacements: GTP binding GDP binding
Supporting Evidence:
GO:0031683 G-protein beta/gamma-subunit complex binding
IEA
GO_REF:0000002
ACCEPT
Summary: The GDP-state G alpha subunit associates with a G beta/gamma dimer to form a functional heterotrimer.
Reason: Receptor-coupling and structural/reconstitution experiments support this assembly and beta/gamma binding as integral functions. A particular experimental beta/gamma combination does not imply universal interchangeability.
Supporting Evidence:
GO:0045202 synapse
IEA
GO_REF:0000120
KEEP AS NON CORE
Summary: Native neuronal Gq/G11 signaling and electrophysiology support a synaptic signaling pool as a conserved location.
Reason: Retain the broad synapse assertion without inventing a specific human synaptic ultrastructural compartment.
Supporting Evidence:
GO:0060158 phospholipase C-activating dopamine receptor signaling pathway
IBA
GO_REF:0000033
KEEP AS NON CORE
Summary: The PAINT assertion at PTN000026396 is grounded in mouse Gq/G11-dependent dopamine signaling.
Reason: Retain this receptor-context capability without describing it as the canonical mechanism of every D1 or D2 receptor or a direct assay of human G11.
Supporting Evidence:
GO:0070062 extracellular exosome
HDA
PMID:19056867
Large-scale proteomics and phosphoproteomics of urinary exos...
UNDECIDED
Summary: The original extracellular-vesicle proteomics citations do not provide independently inspected GNA11-specific enrichment in the accessible material.
Reason: Retain uncertainty about this additional compartment rather than infer absence from its intracellular function.
GO:0070062 extracellular exosome
HDA
PMID:19199708
Proteomic analysis of human parotid gland exosomes by multid...
UNDECIDED
Summary: The original extracellular-vesicle proteomics citations do not provide independently inspected GNA11-specific enrichment in the accessible material.
Reason: Retain uncertainty about this additional compartment rather than infer absence from its intracellular function.
GO:0070062 extracellular exosome
HDA
PMID:23533145
In-depth proteomic analyses of exosomes isolated from expres...
UNDECIDED
Summary: The original extracellular-vesicle proteomics citations do not provide independently inspected GNA11-specific enrichment in the accessible material.
Reason: Retain uncertainty about this additional compartment rather than infer absence from its intracellular function.
GO:0086100 endothelin receptor signaling pathway
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Mouse endothelin–Gq/G11 genetics supports a developmental signaling contribution to craniofacial patterning.
Reason: Retain conserved endothelin signaling and cranial development with explicit paralog-overlap and animal-model limits; G11 is a transducer, not a skeletal structural protein.
Supporting Evidence:
GO:1904888 cranial skeletal system development
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Mouse endothelin–Gq/G11 genetics supports a developmental signaling contribution to craniofacial patterning.
Reason: Retain conserved endothelin signaling and cranial development with explicit paralog-overlap and animal-model limits; G11 is a transducer, not a skeletal structural protein.
Supporting Evidence:

Core Functions

A heterotrimeric G alpha molecular switch couples activated GPCRs to intracellular effectors through GDP/GTP exchange and GTP hydrolysis; receptor and effector selectivity remain protein- and context-dependent.

Supporting Evidence:

References

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Suggested Questions for Experts

Q: Which receptor–G protein–effector combinations operate in native human cells, as distinct from engineered biosensor or ortholog assays?

πŸ“š Additional Documentation

Notes

(GNA11-notes.md)

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