GNG3

gene
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Summary

GNG3 (G protein subunit gamma 3, HGNC:4405) is a protein-coding gene on chromosome 11q12.3, encoding Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-3 (P63215). Guanine nucleotide-binding proteins (G proteins) are involved as a modulator or transducer in various transmembrane signaling systems.

Guanine nucleotide binding proteins are heterotrimeric signal-transducing molecules consisting of alpha, beta, and gamma subunits. The gamma subunit determines the specificity of which signaling pathways will be affected by this particular complex. The protein encoded by this gene represents the gamma subunit of both inhibitory and stimulatory complexes.

Source: NCBI Gene 2785 — RefSeq curated summary.

At a glance

  • GWAS associations: 4
  • Clinical variants (ClinVar): 4 total
  • MANE Select transcript: NM_012202

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:4405
Approved symbolGNG3
NameG protein subunit gamma 3
Location11q12.3
Locus typegene with protein product
StatusApproved
Ensembl geneENSG00000162188
Ensembl biotypeprotein_coding
OMIM608941
Entrez2785

Gene structure

Transcript identifiers

Ensembl transcripts: 11 — 11 protein_coding

ENST00000294117, ENST00000850846, ENST00000854340, ENST00000854341, ENST00000854342, ENST00000912501, ENST00000951615, ENST00000951616, ENST00000951617, ENST00000951618, ENST00000951619

RefSeq mRNA: 1 — MANE Select: NM_012202 NM_012202

CCDS: CCDS8032

Canonical transcript exons

ENST00000294117 — 3 exons

ExonStartEnd
ENSE000010632106270829562708394
ENSE000010632126270867862709201
ENSE000013310026270767662707915

Expression profiles

Bgee: expression breadth ubiquitous, 193 present calls, max score 99.41.

FANTOM5 (CAGE): breadth broad, TPM avg 31.9702 / max 1716.6144, expressed in 325 samples.

FANTOM5 promoters (2 alternative TSS)

Promoter IDTPM avgSamples expressed
11472731.8147325
1147280.155561

Top tissues by expression

287 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
right frontal lobeUBERON:000281099.41gold quality
right hemisphere of cerebellumUBERON:001489099.19gold quality
cerebellar hemisphereUBERON:000224599.10gold quality
cerebellar cortexUBERON:000212999.08gold quality
prefrontal cortexUBERON:000045199.03gold quality
dorsolateral prefrontal cortexUBERON:000983499.03gold quality
frontal cortexUBERON:000187098.84gold quality
frontal lobeUBERON:001652598.84gold quality
cingulate cortexUBERON:000302798.80gold quality
anterior cingulate cortexUBERON:000983598.80gold quality
Brodmann (1909) area 9UBERON:001354098.76gold quality
cerebellumUBERON:000203798.72gold quality
dorsal root ganglionUBERON:000004498.59gold quality
neocortexUBERON:000195098.54gold quality
amygdalaUBERON:000187698.52gold quality
ganglionic eminenceUBERON:000402398.36gold quality
nucleus accumbensUBERON:000188298.31gold quality
cerebral cortexUBERON:000095698.14gold quality
caudate nucleusUBERON:000187398.14gold quality
Brodmann (1909) area 46UBERON:000648398.14gold quality
orbitofrontal cortexUBERON:000416798.04gold quality
superior frontal gyrusUBERON:000266197.97gold quality
lateral nuclear group of thalamusUBERON:000273697.89gold quality
substantia nigra pars compactaUBERON:000196597.81gold quality
telencephalonUBERON:000189397.78gold quality
temporal lobeUBERON:000187197.66gold quality
hypothalamusUBERON:000189897.56gold quality
putamenUBERON:000187497.47gold quality
Ammon’s hornUBERON:000195497.35gold quality
parietal lobeUBERON:000187297.28gold quality

Single-cell (SCXA)

Detected in 7 experiment(s), a significant marker in 5.

ExperimentMarker?Max mean expression
E-MTAB-7316yes1360.89
E-MTAB-6911yes560.00
E-HCAD-5yes14.56
E-GEOD-93593yes12.31
E-HCAD-10yes4.66
E-MTAB-9154no1163.89
E-ANND-3no0.86

Regulation

Is transcription factor: no

Upstream regulators (CollecTRI, top): MAX, MYB, TBX4

miRNA regulators (miRDB)

26 targeting GNG3, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-4283100.0066.422097
HSA-MIR-218-5P99.9372.222103
HSA-MIR-6744-5P99.9366.82748
HSA-MIR-132199.8465.301811
HSA-MIR-473999.8465.251832
HSA-MIR-4756-5P99.8464.981809
HSA-MIR-76599.8468.242442
HSA-MIR-63699.8069.581500
HSA-MIR-11181-3P99.7566.382205
HSA-MIR-6892-3P99.6866.401178
HSA-MIR-5003-5P99.6169.131624
HSA-MIR-136-5P99.5067.261153
HSA-MIR-4717-3P99.0666.341072
HSA-MIR-330-5P98.7367.631788
HSA-MIR-7155-5P98.6566.141290
HSA-MIR-6873-5P98.4566.141417
HSA-MIR-4664-5P98.1765.071020
HSA-MIR-615-5P98.1063.76591
HSA-MIR-6757-5P98.0865.50724
HSA-MIR-397798.0068.171500
HSA-MIR-2467-5P97.3667.71991
HSA-MIR-342-5P97.2564.10817
HSA-MIR-125A-3P97.0466.92902
HSA-MIR-873-3P96.8466.09786
HSA-MIR-7160-3P96.4064.15462
HSA-MIR-770495.3062.35115

Literature-anchored findings (GeneRIF, showing 2)

  • Golgi structure and secretion is regulated by receptor-induced G protein betagamma complex translocation (PMID:20534534)
  • Findings suggest a wide-ranging mechanism by which direct interaction of Gbetagamma with specific chromatin bound transcription factors regulates functional gene networks in response to GPCR activation in cells including the angiotensin II type 1 receptor. (PMID:23326349)

Cross-species orthologs

3 orthologs

OrganismSymbolGene ID
danio_reriogng3ENSDARG00000009553
mus_musculusGng3ENSMUSG00000071658
rattus_norvegicusGng3ENSRNOG00000019570

Paralogs (11): GNG11 (ENSG00000127920), GNGT1 (ENSG00000127928), GNG5B (ENSG00000133136), GNGT2 (ENSG00000167083), GNG8 (ENSG00000167414), GNG4 (ENSG00000168243), GNG12 (ENSG00000172380), GNG5 (ENSG00000174021), GNG7 (ENSG00000176533), GNG2 (ENSG00000186469), GNG10 (ENSG00000242616)

Protein

Protein identifiers

Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-3P63215 (reviewed: P63215)

All UniProt accessions (1): P63215

UniProt curated annotations — full annotation on UniProt →

Function. Guanine nucleotide-binding proteins (G proteins) are involved as a modulator or transducer in various transmembrane signaling systems. The beta and gamma chains are required for the GTPase activity, for replacement of GDP by GTP, and for G protein-effector interaction.

Subunit / interactions. G proteins are composed of 3 units, alpha, beta and gamma. Forms a complex with GNAO1 and GNB1. Interacts with SCN8A.

Subcellular location. Cell membrane.

Similarity. Belongs to the G protein gamma family.

RefSeq proteins (1): NP_036334* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR001770G-protein_gammaFamily
IPR015898G-protein_gamma-like_domDomain
IPR036284GGL_sfHomologous_superfamily

Pfam: PF00631

UniProt features (8 total): modified residue 5, chain 1, propeptide 1, lipid moiety-binding region 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-P63215-F185.440.56

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Post-translational modifications (6): 5, 9, 10, 12, 72, 72

Function

Pathways and Gene Ontology

Reactome pathways

29 pathways

IDPathway
R-HSA-1296041Activation of G protein gated Potassium channels
R-HSA-163359Glucagon signaling in metabolic regulation
R-HSA-202040G-protein activation
R-HSA-381676Glucagon-like Peptide-1 (GLP1) regulates insulin secretion
R-HSA-392170ADP signalling through P2Y purinoceptor 12
R-HSA-392451G beta:gamma signalling through PI3Kgamma
R-HSA-392851Prostacyclin signalling through prostacyclin receptor
R-HSA-400042Adrenaline,noradrenaline inhibits insulin secretion
R-HSA-4086398Ca2+ pathway
R-HSA-416476G alpha (q) signalling events
R-HSA-416482G alpha (12/13) signalling events
R-HSA-418217G beta:gamma signalling through PLC beta
R-HSA-418555G alpha (s) signalling events
R-HSA-418592ADP signalling through P2Y purinoceptor 1
R-HSA-418594G alpha (i) signalling events
R-HSA-418597G alpha (z) signalling events
R-HSA-420092Glucagon-type ligand receptors
R-HSA-428930Thromboxane signalling through TP receptor
R-HSA-432040Vasopressin regulates renal water homeostasis via Aquaporins
R-HSA-456926Thrombin signalling through proteinase activated receptors (PARs)
R-HSA-500657Presynaptic function of Kainate receptors
R-HSA-6814122Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding
R-HSA-8964315G beta:gamma signalling through BTK
R-HSA-8964616G beta:gamma signalling through CDC42
R-HSA-9009391Extra-nuclear estrogen signaling
R-HSA-9634597GPER1 signaling
R-HSA-9660821ADORA2B mediated anti-inflammatory cytokines production
R-HSA-9856530High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells
R-HSA-997272Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits

MSigDB gene sets: 187 (showing top): REACTOME_GLUCAGON_TYPE_LIGAND_RECEPTORS, XU_GH1_AUTOCRINE_TARGETS_UP, REACTOME_ADRENALINE_NORADRENALINE_INHIBITS_INSULIN_SECRETION, REACTOME_POTASSIUM_CHANNELS, REACTOME_INWARDLY_RECTIFYING_K_CHANNELS, REACTOME_PLATELET_ACTIVATION_SIGNALING_AND_AGGREGATION, REACTOME_G_ALPHA_Z_SIGNALLING_EVENTS, AP4_Q6, REACTOME_GLUCAGON_SIGNALING_IN_METABOLIC_REGULATION, AATGGAG_MIR136, CAGCTG_AP4_Q5, REACTOME_G_PROTEIN_ACTIVATION, TGACATY_UNKNOWN, REACTOME_G_BETA_GAMMA_SIGNALLING_THROUGH_PI3KGAMMA, REACTOME_G_PROTEIN_BETA_GAMMA_SIGNALLING

GO Biological Process (3): G protein-coupled receptor signaling pathway (GO:0007186), positive regulation of cytosolic calcium ion concentration (GO:0007204), signal transduction (GO:0007165)

GO Molecular Function (3): GTPase activity (GO:0003924), G-protein beta-subunit binding (GO:0031681), protein binding (GO:0005515)

GO Cellular Component (7): heterotrimeric G-protein complex (GO:0005834), plasma membrane (GO:0005886), postsynaptic density (GO:0014069), dendrite (GO:0030425), cell body (GO:0044297), membrane (GO:0016020), synapse (GO:0045202)

Reactome top-level categories

Rollup of top-12 pathways:

CategoryPathways
GPCR downstream signalling5
Signal amplification3
Regulation of insulin secretion2
G-protein beta:gamma signalling2
G protein gated Potassium channels1
Integration of energy metabolism1
Opioid Signalling1
Platelet homeostasis1
Beta-catenin independent WNT signaling1
Class B/2 (Secretin family receptors)1
Aquaporin-mediated transport1
Platelet activation, signaling and aggregation1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure2
G protein-coupled receptor activity1
signal transduction1
regulation of biological quality1
cell communication1
cellular process1
signaling1
regulation of cellular process1
cellular response to stimulus1
ribonucleoside triphosphate phosphatase activity1
protein binding1
binding1
extrinsic component of cytoplasmic side of plasma membrane1
plasma membrane protein complex1
GTPase complex1
membrane1
cell periphery1
asymmetric synapse1
postsynaptic specialization1
neuron projection1
dendritic tree1
cell junction1

Protein interactions and networks

STRING

0 interactions, top by confidence (×1000):

IntAct

34 interactions, top by confidence:

ABTypeScore
GNG3GNB1psi-mi:“MI:0914”(association)0.640
GNG3GNAI1psi-mi:“MI:0914”(association)0.640
SS18L2GNG3psi-mi:“MI:0915”(physical association)0.560
GNG3NTAQ1psi-mi:“MI:0915”(physical association)0.560
GNG3TRIM74psi-mi:“MI:0915”(physical association)0.560
GNG3SS18L2psi-mi:“MI:0915”(physical association)0.560
GNG3GNB5psi-mi:“MI:0914”(association)0.500
GNG3GNB5psi-mi:“MI:0915”(physical association)0.500
SNAP23GNG3psi-mi:“MI:0915”(physical association)0.370
GNG3GNB2psi-mi:“MI:0914”(association)0.350
GNG3GNB3psi-mi:“MI:0914”(association)0.350
GNG3Ntsr1psi-mi:“MI:0914”(association)0.350
GNG3GNAI2psi-mi:“MI:0914”(association)0.350
MAPTSHTN1psi-mi:“MI:0914”(association)0.350
GNG3GNASpsi-mi:“MI:0914”(association)0.350
GNG3GNAI3psi-mi:“MI:0915”(physical association)0.000
NTAQ1GNG3psi-mi:“MI:0915”(physical association)0.000

BioGRID (42): GNAT2 (Affinity Capture-MS), GNAQ (Affinity Capture-MS), GNAO1 (Affinity Capture-MS), GNA13 (Affinity Capture-MS), GNB4 (Affinity Capture-MS), GNAZ (Affinity Capture-MS), GNA11 (Affinity Capture-MS), FLNC (Affinity Capture-MS), GNB1 (Affinity Capture-MS), GNAI2 (Affinity Capture-MS), GNAI1 (Affinity Capture-MS), PDCL (Affinity Capture-MS), GNG3 (Two-hybrid), GNG3 (Two-hybrid), TRIM73 (Two-hybrid)

ESM2 similar proteins: A0A804HLA8, O14610, O60262, O97564, P02698, P30671, P38040, P43425, P50150, P50151, P50153, P50154, P54406, P59768, P61952, P61953, P61954, P63077, P63078, P63210, P63211, P63212, P63213, P63214, P63215, P63216, P63217, P63218, P63219, Q28024, Q4VT26, Q5E9F0, Q5R639, Q5R7U4, Q5RBQ0, Q5REH7, Q61012, Q61016, Q61017, Q6CPB4

Diamond homologs: A0A1W2PPG7, O60262, P30671, P43425, P50150, P50153, P59768, P63212, P63213, P63214, P63215, P63216, Q28024, Q5R639, Q5R7U4, Q5RBQ0, Q61016, Q9DAS9, Q9UBI6, A0A804HLA8, P38040, P50151, P63077, P63078, P63217, P63218, P63219, Q4VT26, Q5REH7, Q80SZ7, Q9CXP8, Q9UK08, O14610, O97564, P02698, P50154, P54406, P61952, P61953, P61954

SIGNOR signaling

7 interactions.

AEffectBMechanism
GNG3up-regulatesPIK3CAbinding
SMOup-regulatesGNG3binding
GNG3up-regulatesPLCG1binding
GNG3up-regulatesPI3Kbinding

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 15 IntAct physical interaction partners (hypergeometric vs the genome-wide background, BH-FDR, gene-set size 15–500, ranked by fold). A functional readout of the neighbourhood — distinct from this gene’s own memberships above, and biased toward well-studied / hub proteins, so read it as themes rather than proof.

Reactome pathways:

PathwayPartnersFoldFDR
ADP signalling through P2Y purinoceptor 127316.0×3e-16
Prostacyclin signalling through prostacyclin receptor5273.2×3e-11
Adrenaline,noradrenaline inhibits insulin secretion6214.8×9e-13
ADORA2B mediated anti-inflammatory cytokines production8184.6×2e-16
GPER1 signaling8180.6×2e-16
G alpha (z) signalling events8169.5×3e-16
Glucagon-type ligand receptors5157.3×5e-10
Glucagon-like Peptide-1 (GLP1) regulates insulin secretion5120.7×2e-09

GO biological processes:

GO termPartnersFoldFDR
G protein-coupled receptor signaling pathway719.5×3e-06

Disease & clinical

Clinical variants and AI predictions

ClinVar

4 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance0
Likely benign3
Benign1

Top pathogenic / likely-pathogenic (0)

SpliceAI

484 predictions. Top by Δscore:

VariantEffectΔscore
11:62708290:TCCA:Tacceptor_loss1.0000
11:62708293:A:ACacceptor_loss1.0000
11:62708293:A:AGacceptor_gain1.0000
11:62708293:AG:Aacceptor_gain1.0000
11:62708293:AGGAT:Aacceptor_gain1.0000
11:62708294:G:GTacceptor_gain1.0000
11:62708294:GG:Gacceptor_gain1.0000
11:62708294:GGA:Gacceptor_gain1.0000
11:62708294:GGAT:Gacceptor_gain1.0000
11:62708294:GGATG:Gacceptor_gain1.0000
11:62708393:AGGTA:Adonor_loss1.0000
11:62708395:G:GAdonor_loss1.0000
11:62708396:T:Gdonor_loss1.0000
11:62708674:CCAG:Cacceptor_loss1.0000
11:62708675:CAG:Cacceptor_loss1.0000
11:62708676:A:ATacceptor_loss1.0000
11:62707110:T:TAdonor_gain0.9900
11:62707323:CC:Cacceptor_gain0.9900
11:62707324:CC:Cacceptor_gain0.9900
11:62707325:C:CAacceptor_loss0.9900
11:62708395:G:GGdonor_gain0.9900
11:62708664:T:TAacceptor_gain0.9900
11:62708668:T:Aacceptor_gain0.9900
11:62708670:T:TAacceptor_gain0.9900
11:62708676:A:AGacceptor_gain0.9900
11:62708677:G:GGacceptor_gain0.9900
11:62708677:GGT:Gacceptor_gain0.9900
11:62707325:C:CCacceptor_gain0.9800
11:62708393:AG:Adonor_gain0.9800
11:62708393:AGGT:Adonor_gain0.9800

AlphaMissense

496 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
11:62708700:T:CL41P0.999
11:62708771:T:CF65L0.999
11:62708773:C:AF65L0.999
11:62708773:C:GF65L0.999
11:62708363:T:CL23P0.998
11:62708767:C:AN63K0.998
11:62708767:C:GN63K0.998
11:62708772:T:CF65S0.998
11:62708733:A:CD52A0.997
11:62708771:T:AF65I0.997
11:62708690:G:CA38P0.996
11:62708732:G:CD52H0.996
11:62708733:A:GD52G0.996
11:62708733:A:TD52V0.996
11:62708734:T:AD52E0.996
11:62708734:T:GD52E0.996
11:62708739:T:CL54P0.996
11:62708765:A:GN63D0.996
11:62708768:C:TP64S0.996
11:62708771:T:GF65V0.996
11:62708772:T:GF65C0.996
11:62708363:T:AL23H0.995
11:62708700:T:AL41Q0.994
11:62708712:G:AC45Y0.994
11:62708713:T:GC45W0.994
11:62708374:G:CA27P0.993
11:62708687:G:CA37P0.993
11:62708700:T:GL41R0.993
11:62708739:T:AL54H0.993
11:62708691:C:AA38E0.992

dbSNP variants (sampled 300 via entrez): RS1000220072 (11:62708143 G>A,C,T), RS1001126910 (11:62706647 G>A,C), RS1001313790 (11:62706416 T>C), RS1001519786 (11:62705100 G>A), RS1002061006 (11:62707688 T>A), RS1002299839 (11:62707070 C>A), RS1002675363 (11:62707436 C>T), RS1003017678 (11:62706540 C>G,T), RS1003456487 (11:62706400 G>A,T), RS1004059732 (11:62704539 C>A), RS1004291196 (11:62709129 TCTTG>T), RS1005060866 (11:62706136 C>A), RS1005305189 (11:62707625 A>G), RS1005336475 (11:62707281 C>T), RS1006050346 (11:62707504 G>A)

Disease associations

OMIM: gene MIM:608941 | disease phenotypes:

GenCC curated gene-disease

Mondo (1): monogenic diabetes (MONDO:0015967)

Orphanet (1): Rare genetic diabetes mellitus (Orphanet:183625)

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

4 associations (top):

StudyTraitp-value
GCST005956_12Waist-to-hip ratio adjusted for BMI2.000000e-06
GCST005956_2Waist-to-hip ratio adjusted for BMI1.000000e-08
GCST005962_37Waist-to-hip ratio adjusted for BMI x sex x age interaction (4df test)5.000000e-07
GCST005962_51Waist-to-hip ratio adjusted for BMI x sex x age interaction (4df test)1.000000e-07

EFO canonical traits (3, from GWAS)

EFO IDTrait name
EFO:0007788BMI-adjusted waist-hip ratio
EFO:0008007age at assessment
EFO:0008343sex interaction measurement

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

CTD chemical–gene interactions

9 total (human), top 9 by PubMed support.

ChemicalActions (top 5)PubMed papers
Valproic Acidaffects expression, increases expression3
decabromobiphenyl etheraffects expression1
CGP 52608affects binding, increases reaction1
jinfukangaffects cotreatment, decreases expression1
Bariumaffects binding, decreases reaction, increases transport1
Carbamazepineaffects expression1
Cisplatindecreases expression, affects cotreatment1
Dimethyl Sulfoxideaffects expression1
Silicon Dioxidedecreases expression1

Clinical trials (associated diseases)

9 trials via MONDO — disease-level, not drug-specific.

TrialPhaseStatusTitle
NCT06976658PHASE2RECRUITINGGlucokinase Activator in Monogenic Diabetes
NCT01795144PHASE1COMPLETEDIncretin Regulation of Insulin Secretion in Monogenic Diabetes
NCT04409795PHASE2/PHASE3COMPLETEDOral Hypoglycemic Therapy for Monogenic Variant Carriers of the Joslin Medalist Study
NCT03988764Not specifiedRECRUITINGMonogenic Diabetes Misdiagnosed as Type 1
NCT05586594Not specifiedNOT_YET_RECRUITINGIdentifying Maturity-onset Diabetes of the Young in Emirati Patients
NCT06478121Not specifiedRECRUITINGUnderstanding Beta Cell Disorders Through the Study of Rare Genotypes (ENDURE)
NCT06746610Not specifiedRECRUITINGScreening and Molecular Diagnosis-based Individualized Precision Management of Monogenic Diabetes
NCT07492004Not specifiedRECRUITINGChina Monogenic Diabetes Registry
NCT07564518Not specifiedNOT_YET_RECRUITINGApplication of FreeStyle Libre 2 for Evaluating Glycemic Variability Characteristics in Patients With Extreme Glucose Metabolism Phenotypes
  • Disease cohort memberships (association, not causation — diseases whose associated-gene cohort lists this gene; a subset are also under Associated diseases): monogenic diabetes