GNAQ

UniProt ID: P50148
Organism: Homo sapiens
Review Status: COMPLETE
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Gene Description

GNAQ encodes G alpha q, a membrane-associated guanine-nucleotide switch in heterotrimeric G proteins. Activated receptors promote GDP/GTP exchange, allowing Gq to activate phospholipase C beta and generate inositol trisphosphate and diacylglycerol signals. Intrinsic GTP hydrolysis, accelerated by regulatory proteins and PLC beta, terminates signaling. Gq participates in diverse endocrine, vascular, platelet and neuronal responses; nuclear-membrane and Golgi pools coexist with plasma-membrane signaling in particular cells.

Existing Annotations Review

GO Term Evidence Action Reason
GO:0001664 G protein-coupled receptor binding
IEA
GO_REF:0000002
ACCEPT
Summary: Direct receptor-complex and coupling experiments establish recognition of intracellular GPCR surfaces by Gq, including serotonin and other receptor families.
Reason: Direct GPCR-complex and coupling experiments establish Gq recognition of intracellular receptor surfaces. PMID:38632411 supplies receptor coupling evidence; PMID:37991948 supplies downstream PLCbeta3 effector evidence, not a receptor-bound structure.
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 GNAQ 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 GNAQ 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 GNAQ 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 GNAQ 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
EXP
PMID:37991948
The mechanism of GΞ±(q) regulation of PLCΞ²3-catalyzed PIP2 hy...
ACCEPT
Summary: GNAQ 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
IEA
GO_REF:0000002
ACCEPT
Summary: GNAQ 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:9238049
Platelet signal transduction defect with Galpha subunit dysf...
ACCEPT
Summary: GNAQ 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: GNAQ 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: GNAQ 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:11024015
Identification and characterization of two G protein-coupled...
ACCEPT
Summary: GNAQ 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: GNAQ 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:37991948
The mechanism of GΞ±(q) regulation of PLCΞ²3-catalyzed PIP2 hy...
ACCEPT
Summary: GNAQ 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:0000117
ACCEPT
Summary: GNAQ 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:0005096 GTPase activator activity
IDA
PMID:15611106
beta-Arrestin 1 and Galphaq/11 coordinately activate RhoA an...
UNDECIDED
Summary: The original PMID:15611106 abstract reports beta-arrestin1/Gq-dependent RhoA activation and stress-fiber formation, not acceleration of GTP hydrolysis by Gq on another GTPase.
Reason: Full text could not be recovered despite targeted attempts. Gq is itself a GTPase and PLCbeta can act as its GAP; neither fact resolves whether this experimental row asserts an additional GAP function. Retain uncertainty rather than invert the enzyme/regulator roles from an abstract.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:18672896
Regulation of G protein-coupled receptor activities by the p...
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:0005515 protein binding
IPI
PMID:18772143
Disease-causing mutation in GPR54 reveals the importance of ...
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:0005515 protein binding
IPI
PMID:22056876
A retinoic acid receptor RARΞ± pool present in membrane lipid...
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:0005515 protein binding
IPI
PMID:22750945
Direct inhibition of the cold-activated TRPM8 ion channel by...
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:0005515 protein binding
IPI
PMID:23353685
Ξ²-Arrestin-1 directly interacts with GΞ±s and regulates its f...
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:0005515 protein binding
IPI
PMID:23994616
A novel GΞ±s-binding protein, Gas-2 like 2, facilitates the s...
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:0005515 protein binding
IPI
PMID:27265506
ARF6 Is an Actionable Node that Orchestrates Oncogenic GNAQ ...
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:0005515 protein binding
IPI
PMID:34110646
A novel role of ADGRF1 (GPR110) in promoting cellular quiesc...
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: GNAQ 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: GNAQ 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:0005634 nucleus
IEA
GO_REF:0000044
KEEP AS NON CORE
Summary: The traced mouse study directly colocalizes Gq with alpha1 receptors and PLCbeta1 at the nuclear membrane and validates nuclear fractions.
Reason: Retain the conserved nuclear/nuclear-membrane pool with cardiac-cell and species limits; plasma-membrane localization does not exclude it.
Supporting Evidence:
GO:0005634 nucleus
ISS
GO_REF:0000024
KEEP AS NON CORE
Summary: The traced mouse study directly colocalizes Gq with alpha1 receptors and PLCbeta1 at the nuclear membrane and validates nuclear fractions.
Reason: Retain the conserved nuclear/nuclear-membrane pool with cardiac-cell and species limits; plasma-membrane localization does not exclude it.
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
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 source is accessible only without verified target-level fraction/enrichment evidence for GNAQ in this audit.
Reason: Its known plasma-membrane and Golgi pools do not disprove lysosomal association, but they cannot establish this precise membrane assignment. The specific HDA result remains unresolved.
Supporting Evidence:
GO:0005794 Golgi apparatus
EXP
PMID:19001095
Identification of G protein alpha subunit-palmitoylating enz...
KEEP AS NON CORE
Summary: PMID:19001095 directly examines Gq trafficking between Golgi and plasma membrane.
Reason: Retain the root Golgi assertion independently of the main plasma-membrane activity; no finer Golgi topology is manufactured.
Supporting Evidence:
GO:0005794 Golgi apparatus
IEA
GO_REF:0000044
KEEP AS NON CORE
Summary: PMID:19001095 directly examines Gq trafficking between Golgi and plasma membrane.
Reason: Retain the root Golgi assertion independently of the main plasma-membrane activity; no finer Golgi topology is manufactured.
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
GO_REF:0000052
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
IDA
PMID:19001095
Identification of G protein alpha subunit-palmitoylating enz...
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:0000044
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-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:10633085
Interaction of folate receptor with signaling molecules lyn ...
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
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:0007186 G protein-coupled receptor signaling pathway
IDA
PMID:34556863
Structures of the human cholecystokinin receptors bound to a...
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: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:0007189 adenylate cyclase-activating G protein-coupled receptor signaling pathway
IBA
GO_REF:0000033
KEEP AS NON CORE
Summary: The PAINT assertion is placed at PTN008496048 with mouse Gnaq descendant evidence, not transferred from a generic Gs label.
Reason: The original mouse transgenic source primarily measures reduced cyclase expression, but independent PMID:8390980 shows Gq-coupled receptor enhancement of AC-II through PKC; retain this contextual pathway capability while distinguishing it from direct Gs-like binding to a cyclase catalytic domain.
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: Gq directly activates PLCbeta in receptor-dependent cellular assays and purified effector biochemistry.
Reason: PLCbeta produces the second messengers; Gq regulates the enzyme rather than catalyzing phospholipid hydrolysis itself.
GO:0007200 phospholipase C-activating G protein-coupled receptor signaling pathway
IDA
PMID:20966218
Kinetic scaffolding mediated by a phospholipase C-beta and G...
ACCEPT
Summary: Gq directly activates PLCbeta in receptor-dependent cellular assays and purified effector biochemistry.
Reason: PLCbeta produces the second messengers; Gq regulates the enzyme rather than catalyzing phospholipid hydrolysis itself.
GO:0007200 phospholipase C-activating G protein-coupled receptor signaling pathway
IDA
PMID:27104960
GPR142 Agonists Stimulate Glucose-Dependent Insulin Secretio...
ACCEPT
Summary: Gq directly activates PLCbeta in receptor-dependent cellular assays and purified effector biochemistry.
Reason: PLCbeta produces the second messengers; Gq regulates the enzyme rather than catalyzing phospholipid hydrolysis itself.
GO:0007200 phospholipase C-activating G protein-coupled receptor signaling pathway
IDA
PMID:37991948
The mechanism of GΞ±(q) regulation of PLCΞ²3-catalyzed PIP2 hy...
ACCEPT
Summary: Gq directly activates PLCbeta in receptor-dependent cellular assays and purified effector biochemistry.
Reason: PLCbeta produces the second messengers; Gq regulates the enzyme rather than catalyzing phospholipid hydrolysis itself.
GO:0007200 phospholipase C-activating G protein-coupled receptor signaling pathway
IDA
PMID:8253813
Cloning and expression of a cDNA for the human prostaglandin...
ACCEPT
Summary: Gq directly activates PLCbeta in receptor-dependent cellular assays and purified effector biochemistry.
Reason: PLCbeta produces the second messengers; Gq regulates the enzyme rather than catalyzing phospholipid hydrolysis itself.
GO:0007200 phospholipase C-activating G protein-coupled receptor signaling pathway
IEA
GO_REF:0000117
ACCEPT
Summary: Gq directly activates PLCbeta in receptor-dependent cellular assays and purified effector biochemistry.
Reason: PLCbeta produces the second messengers; Gq regulates the enzyme rather than catalyzing phospholipid hydrolysis itself.
GO:0007208 phospholipase C-activating serotonin receptor signaling pathway
IDA
PMID:37991948
The mechanism of GΞ±(q) regulation of PLCΞ²3-catalyzed PIP2 hy...
KEEP AS NON CORE
Summary: Serotonin–Gq pathway supported independently of the original PLC-effector paper.
Reason: Independent PMID:32946782 establishes 5-HT2A coupling to engineered Gq in a structural/cellular system, supporting this serotonin-receptor implementation. The original PMID:37991948 directly establishes Gq–PLCbeta3 activation but does not itself assay serotonin receptor coupling; the pathway claim is retained from the independent evidence, not an invented serotonin experiment in that paper.
Supporting Evidence:
GO:0007209 phospholipase C-activating tachykinin receptor signaling pathway
IDA
PMID:1718267
Molecular cloning, structural characterization and functiona...
KEEP AS NON CORE
Summary: Tachykinin-receptor coupling and structural work support the Gq–PLC pathway in the tested receptor contexts.
Reason: Preserve the specific signaling implementation without making it universal across tachykinin receptors.
Supporting Evidence:
GO:0007209 phospholipase C-activating tachykinin receptor signaling pathway
IDA
PMID:37391393
Structural insights into neurokinin 3 receptor activation by...
KEEP AS NON CORE
Summary: Tachykinin-receptor coupling and structural work support the Gq–PLC pathway in the tested receptor contexts.
Reason: Preserve the specific signaling implementation without making it universal across tachykinin receptors.
Supporting Evidence:
GO:0007213 G protein-coupled acetylcholine receptor signaling pathway
ISS
GO_REF:0000024
KEEP AS NON CORE
Summary: Muscarinic M1/M3 coupling assays establish Gq participation in cholinergic signaling; the mouse beta-cell Gq/G11 deletion corroborates native muscarinic signaling but does not assign every response exclusively to Gq.
Reason: Muscarinic M1/M3 coupling assays establish Gq participation in cholinergic signaling; the mouse beta-cell Gq/G11 deletion corroborates native muscarinic signaling but does not assign every response exclusively to Gq.
Supporting Evidence:
GO:0007213 G protein-coupled acetylcholine receptor signaling pathway
ISS
GO_REF:0000024
KEEP AS NON CORE
Summary: Muscarinic M1/M3 coupling assays establish Gq participation in cholinergic signaling; the mouse beta-cell Gq/G11 deletion corroborates native muscarinic signaling but does not assign every response exclusively to Gq.
Reason: Muscarinic M1/M3 coupling assays establish Gq participation in cholinergic signaling; the mouse beta-cell Gq/G11 deletion corroborates native muscarinic signaling but does not assign every response exclusively to Gq.
Supporting Evidence:
GO:0007215 glutamate receptor signaling pathway
IBA
GO_REF:0000033
KEEP AS NON CORE
Summary: The mGlu1–Gq–PLC pathway and postsynaptic experiments at parallel-fiber/Purkinje-cell synapses directly support glutamate signaling and the postsynaptic intracellular pool.
Reason: These are specific neuronal implementations of the general transducer function.
Supporting Evidence:
GO:0007218 neuropeptide signaling pathway
IDA
PMID:11024015
Identification and characterization of two G protein-coupled...
KEEP AS NON CORE
Summary: Neuromedin receptor activation of Gq establishes neuropeptide signaling participation.
Reason: The peptide binds its receptor; Gq transduces the intracellular signal rather than binding the extracellular peptide as a hormone receptor.
Supporting Evidence:
GO:0007596 blood coagulation
TAS
PMID:9238049
Platelet signal transduction defect with Galpha subunit dysf...
KEEP AS NON CORE
Summary: Native Gnaq-deficient mouse platelets fail activation by multiple physiological agonists and have prolonged bleeding.
Reason: This supports a conserved signaling contribution to platelet activation and hemostasis rather than a clotting-protease function.
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 GNAQ 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 GNAQ 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 GNAQ 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 GNAQ 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: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 GNAQ 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 GNAQ 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 GNAQ 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 GNAQ 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 GNAQ 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 GNAQ 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 GNAQ 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 GNAQ 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:0009755 hormone-mediated signaling pathway
IDA
PMID:31911434
The GPCR accessory protein MRAP2 regulates both biased signa...
KEEP AS NON CORE
Summary: The hormone-receptor/Gq coupling experiments establish direct intracellular transduction of hormonal stimulation.
Reason: This broad hormone-response role is contextual rather than a distinct catalytic hormone activity.
Supporting Evidence:
GO:0009898 cytoplasmic side of plasma membrane
IDA
PMID:12135370
Activation-induced subcellular redistribution of G alpha(s) ...
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
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
IDA
PMID:19001095
Identification of G protein alpha subunit-palmitoylating enz...
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
IDA
PMID:27276689
mGlu1 receptor canonical signaling pathway contributes to th...
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:0010543 regulation of platelet activation
ISS
GO_REF:0000024
KEEP AS NON CORE
Summary: Native Gnaq-deficient mouse platelets fail activation by multiple physiological agonists and have prolonged bleeding.
Reason: This supports a conserved signaling contribution to platelet activation and hemostasis rather than a clotting-protease function.
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:0031965 nuclear membrane
IEA
GO_REF:0000044
KEEP AS NON CORE
Summary: The traced mouse study directly colocalizes Gq with alpha1 receptors and PLCbeta1 at the nuclear membrane and validates nuclear fractions.
Reason: Retain the conserved nuclear/nuclear-membrane pool with cardiac-cell and species limits; plasma-membrane localization does not exclude it.
Supporting Evidence:
GO:0031965 nuclear membrane
ISS
GO_REF:0000024
KEEP AS NON CORE
Summary: The traced mouse study directly colocalizes Gq with alpha1 receptors and PLCbeta1 at the nuclear membrane and validates nuclear fractions.
Reason: Retain the conserved nuclear/nuclear-membrane pool with cardiac-cell and species limits; plasma-membrane localization does not exclude it.
Supporting Evidence:
GO:0032278 positive regulation of gonadotropin secretion
IDA
PMID:18772143
Disease-causing mutation in GPR54 reveals the importance of ...
KEEP AS NON CORE
Summary: GPR54 signaling and gonadotrope-specific mouse Gq/G11 genetics support participation in gonadotropin synthesis/secretion through receptor signaling.
Reason: The combined knockout establishes a Gq/G11 requirement, not that each paralog is individually indispensable or that Gq directly synthesizes hormone.
Supporting Evidence:
GO:0032278 positive regulation of gonadotropin secretion
IMP
PMID:14573733
The GPR54 gene as a regulator of puberty.
KEEP AS NON CORE
Summary: GPR54 signaling and gonadotrope-specific mouse Gq/G11 genetics support participation in gonadotropin synthesis/secretion through receptor signaling.
Reason: The combined knockout establishes a Gq/G11 requirement, not that each paralog is individually indispensable or that Gq directly synthesizes hormone.
Supporting Evidence:
GO:0034695 response to prostaglandin E
IDA
PMID:8253813
Cloning and expression of a cDNA for the human prostaglandin...
KEEP AS NON CORE
Summary: The prostaglandin-receptor coupling study supports a specific Gq signaling response to prostaglandin E.
Reason: This does not assign prostaglandin synthesis or direct ligand binding to Gq.
Supporting Evidence:
GO:0042446 hormone biosynthetic process
ISS
GO_REF:0000024
KEEP AS NON CORE
Summary: GPR54 signaling and gonadotrope-specific mouse Gq/G11 genetics support participation in gonadotropin synthesis/secretion through receptor signaling.
Reason: The combined knockout establishes a Gq/G11 requirement, not that each paralog is individually indispensable or that Gq directly synthesizes hormone.
Supporting Evidence:
GO:0042593 glucose homeostasis
ISS
GO_REF:0000024
KEEP AS NON CORE
Summary: Beta-cell-specific mouse Gq/G11 inactivation impairs glucose tolerance and insulin secretion.
Reason: Retain the conserved endocrine signaling role with combined-paralog and native-mouse scope; Gq is not a glucose transporter or metabolic enzyme.
Supporting Evidence:
GO:0043303 mast cell degranulation
IDA
PMID:28288109
In silico design of novel probes for the atypical opioid rec...
KEEP AS NON CORE
Summary: Mast-cell receptor activation studies support Gq-linked signaling contributing to degranulation.
Reason: Preserve the receptor/cell-specific signaling contribution without assigning Gq as the vesicle fusion machinery.
Supporting Evidence:
GO:0043303 mast cell degranulation
IDA
PMID:34789875
Structure, function and pharmacology of human itch receptor ...
KEEP AS NON CORE
Summary: Mast-cell receptor activation studies support Gq-linked signaling contributing to degranulation.
Reason: Preserve the receptor/cell-specific signaling contribution without assigning Gq as the vesicle fusion machinery.
Supporting Evidence:
GO:0045202 synapse
IEA
GO_REF:0000117
KEEP AS NON CORE
Summary: The mGlu1–Gq–PLC pathway and postsynaptic experiments at parallel-fiber/Purkinje-cell synapses directly support glutamate signaling and the postsynaptic intracellular pool.
Reason: These are specific neuronal implementations of the general transducer function.
Supporting Evidence:
GO:0045453 bone resorption
NAS
PMID:23516330
Parathyroid hormone (PTH) and PTH-related peptide domains co...
UNDECIDED
Summary: The cited PTH-receptor biased-agonist study links signaling profiles to bone effects, but the available source does not isolate a GNAQ-specific resorptive mechanism.
Reason: Broad PTH physiology or Gq pathway engagement alone is insufficient to assign this precise outcome; full target-level support remains unresolved.
Supporting Evidence:
GO:0046888 negative regulation of hormone secretion
IDA
PMID:38632411
Promiscuous G-protein activation by the calcium-sensing rece...
KEEP AS NON CORE
Summary: CaSR coupling to Gq contributes to calcium-dependent control of hormone secretion.
Reason: Retain this contextual pathway participation; the receptor–G protein structure is direct coupling evidence, whereas the secretion outcome draws on the known CaSR endocrine mechanism and is not itself measured by a structure.
Supporting Evidence:
GO:0050821 protein stabilization
IMP
PMID:20399743
Regulation of GSK-3beta and beta-Catenin by Galphaq in HEK29...
KEEP AS NON CORE
Summary: Activated Gq stabilizes beta-catenin through signaling that inhibits GSK3 in the studied cells, supporting the protein-stabilization and Wnt-regulatory outcomes.
Reason: Retain these secondary signaling effects without assigning Gq direct ubiquitin-ligase or Wnt-receptor activity.
Supporting Evidence:
GO:0060828 regulation of canonical Wnt signaling pathway
IMP
PMID:20399743
Regulation of GSK-3beta and beta-Catenin by Galphaq in HEK29...
KEEP AS NON CORE
Summary: Activated Gq stabilizes beta-catenin through signaling that inhibits GSK3 in the studied cells, supporting the protein-stabilization and Wnt-regulatory outcomes.
Reason: Retain these secondary signaling effects without assigning Gq direct ubiquitin-ligase or Wnt-receptor activity.
Supporting Evidence:
GO:0070062 extracellular exosome
HDA
PMID:19056867
Large-scale proteomics and phosphoproteomics of urinary exos...
UNDECIDED
Summary: The original urinary, parotid and prostate vesicle-proteomics citations are retained, but target-specific detection and vesicle enrichment could not be independently resolved here.
Reason: Intracellular membrane association neither proves nor excludes released-vesicle localization; the precise HDA claim remains open.
GO:0070062 extracellular exosome
HDA
PMID:19199708
Proteomic analysis of human parotid gland exosomes by multid...
UNDECIDED
Summary: The original urinary, parotid and prostate vesicle-proteomics citations are retained, but target-specific detection and vesicle enrichment could not be independently resolved here.
Reason: Intracellular membrane association neither proves nor excludes released-vesicle localization; the precise HDA claim remains open.
GO:0070062 extracellular exosome
HDA
PMID:23533145
In-depth proteomic analyses of exosomes isolated from expres...
UNDECIDED
Summary: The original urinary, parotid and prostate vesicle-proteomics citations are retained, but target-specific detection and vesicle enrichment could not be independently resolved here.
Reason: Intracellular membrane association neither proves nor excludes released-vesicle localization; the precise HDA claim remains open.
GO:0071468 cellular response to acidic pH
IDA
PMID:39753132
Molecular basis of proton sensing by G protein-coupled recep...
KEEP AS NON CORE
Summary: The acid-sensing receptor study establishes Gq coupling in response to extracellular acidity.
Reason: The G protein transduces the receptor response rather than acting as the primary proton sensor.
Supporting Evidence:
GO:0099524 postsynaptic cytosol
IDA
PMID:27276689
mGlu1 receptor canonical signaling pathway contributes to th...
KEEP AS NON CORE
Summary: The mGlu1–Gq–PLC pathway and postsynaptic experiments at parallel-fiber/Purkinje-cell synapses directly support glutamate signaling and the postsynaptic intracellular pool.
Reason: These are specific neuronal implementations of the general transducer function.
Supporting Evidence:
GO:0160025 sensory perception of itch
IDA
PMID:31500698
MRGPRX4 is a bile acid receptor for human cholestatic itch.
KEEP AS NON CORE
Summary: MRGPRX4 activation and Gq coupling provide a signaling route relevant to human itch.
Reason: The receptor/neuronal experiments support a sensory implementation, not an assertion that every Gq-containing cell mediates itch.
Supporting Evidence:
GO:0160025 sensory perception of itch
IDA
PMID:39476841
Structure-guided discovery of bile acid derivatives for trea...
KEEP AS NON CORE
Summary: MRGPRX4 activation and Gq coupling provide a signaling route relevant to human itch.
Reason: The receptor/neuronal experiments support a sensory implementation, not an assertion that every Gq-containing cell mediates itch.
Supporting Evidence:
GO:1904181 positive regulation of membrane depolarization
TAS
PMID:34939256
The electrophysiologic properties of gonadotropin-releasing ...
KEEP AS NON CORE
Summary: The cited receptor-driven depolarization pathway implicates Gq-mediated intracellular signaling.
Reason: Retain the contextual regulatory role, distinguishing signal transduction from direct ion-channel pore activity.
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

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