GAB3

gene
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Summary

GAB3 (GRB2 associated binding protein 3, HGNC:17515) is a protein-coding gene on chromosome Xq28, encoding GRB2-associated-binding protein 3 (Q8WWW8).

This gene is a member of the GRB2-associated binding protein gene family. These proteins are scaffolding/docking proteins that are involved in several growth factor and cytokine signaling pathways, and they contain a pleckstrin homology domain, and bind SHP2 tyrosine phosphatase and GRB2 adapter protein. The protein encoded by this gene facilitates macrophage differentiation. Alternative splicing results in multiple transcript variants.

Source: NCBI Gene 139716 — RefSeq curated summary.

At a glance

  • GWAS associations: 3
  • Clinical variants (ClinVar): 163 total — 1 pathogenic
  • MANE Select transcript: NM_001081573

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:17515
Approved symbolGAB3
NameGRB2 associated binding protein 3
LocationXq28
Locus typegene with protein product
StatusApproved
Ensembl geneENSG00000160219
Ensembl biotypeprotein_coding
OMIM300482
Entrez139716

Gene structure

Transcript identifiers

Ensembl transcripts: 11 — 9 protein_coding, 2 protein_coding_CDS_not_defined

ENST00000369568, ENST00000369575, ENST00000424127, ENST00000454973, ENST00000475685, ENST00000496390, ENST00000872120, ENST00000872121, ENST00000872122, ENST00000872123, ENST00000943825

RefSeq mRNA: 3 — MANE Select: NM_001081573 NM_001081573, NM_001282283, NM_080612

CCDS: CCDS14760, CCDS48198, CCDS65357

Canonical transcript exons

ENST00000424127 — 10 exons

ExonStartEnd
ENSE00001096286154712229154712701
ENSE00001450374154675249154678294
ENSE00002097975154750954154751077
ENSE00003491409154699294154699513
ENSE00003493606154695917154696019
ENSE00003528967154700004154700059
ENSE00003533915154697132154697213
ENSE00003559769154680132154680248
ENSE00003560057154716026154716329
ENSE00003659487154713207154713426

Expression profiles

Bgee: expression breadth ubiquitous, 187 present calls, max score 93.39.

FANTOM5 (CAGE): breadth broad, TPM avg 3.3954 / max 95.4385, expressed in 826 samples.

FANTOM5 promoters (3 alternative TSS)

Promoter IDTPM avgSamples expressed
2010563.1187800
2010570.182894
2010580.093943

Top tissues by expression

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

TissueAnatomy IDExpression scoreQuality
left ventricle myocardiumUBERON:000656693.39gold quality
cardiac muscle of right atriumUBERON:000337991.63gold quality
granulocyteCL:000009490.88gold quality
apex of heartUBERON:000209890.04gold quality
bloodUBERON:000017888.37gold quality
spleenUBERON:000210686.75gold quality
leukocyteCL:000073886.40gold quality
monocyteCL:000057686.33gold quality
primordial germ cell in gonadCL:0000670 ∩ UBERON:000099185.67gold quality
trabecular bone tissueUBERON:000248384.81gold quality
heart left ventricleUBERON:000208484.75gold quality
cardiac ventricleUBERON:000208284.36gold quality
myocardiumUBERON:000234984.20gold quality
male germ line stem cell (sensu Vertebrata) in testisCL:0000089 ∩ UBERON:000047383.50gold quality
heartUBERON:000094881.95gold quality
cardiac atriumUBERON:000208181.94gold quality
bone marrowUBERON:000237181.86gold quality
right atrium auricular regionUBERON:000663181.73gold quality
bone marrow cellCL:000209279.18gold quality
right lungUBERON:000216779.14gold quality
upper lobe of left lungUBERON:000895278.09gold quality
vermiform appendixUBERON:000115477.86gold quality
upper lobe of lungUBERON:000894877.12gold quality
lymph nodeUBERON:000002977.00gold quality
small intestine Peyer’s patchUBERON:000345476.99gold quality
subcutaneous adipose tissueUBERON:000219076.96gold quality
omental fat padUBERON:001041476.95gold quality
peritoneumUBERON:000235876.89gold quality
adipose tissue of abdominal regionUBERON:000780876.74gold quality
right coronary arteryUBERON:000162576.06gold quality

Single-cell (SCXA)

Detected in 3 experiment(s), a significant marker in 1.

ExperimentMarker?Max mean expression
E-ANND-3yes6.40
E-GEOD-100618no498.13
E-MTAB-6075no315.06

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

84 targeting GAB3, 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-3646100.0073.565283
HSA-MIR-3613-3P100.0076.367965
HSA-MIR-6873-3P100.0071.422626
HSA-MIR-4668-3P100.0068.742635
HSA-MIR-7110-3P100.0073.182486
HSA-MIR-6748-5P100.0065.811057
HSA-MIR-4768-5P100.0069.492861
HSA-MIR-6833-3P100.0070.633197
HSA-MIR-188-3P100.0068.761240
HSA-MIR-8485100.0077.574731
HSA-MIR-450099.9972.722367
HSA-MIR-6759-5P99.9966.54785
HSA-MIR-366299.9973.825684
HSA-MIR-56899.9869.862084
HSA-LET-7A-5P99.9872.291790
HSA-LET-7B-5P99.9872.311790
HSA-LET-7C-5P99.9872.291790
HSA-LET-7E-5P99.9872.291790
HSA-LET-7F-5P99.9872.561784
HSA-LET-7G-5P99.9872.371784
HSA-LET-7I-5P99.9872.371788
HSA-MIR-98-5P99.9872.331787
HSA-MIR-568899.9673.234504
HSA-MIR-495-3P99.9672.814197
HSA-MIR-545-3P99.9570.742783
HSA-MIR-627-3P99.9071.423316
HSA-MIR-808799.9069.551351
HSA-MIR-430299.8967.941187
HSA-MIR-345-3P99.8970.231421
HSA-MIR-3151-5P99.8663.831069

Literature-anchored findings (GeneRIF, showing 6)

  • The carboxy-terminal SH3 domain of the adapter protein Mona interacts with the atypical proline-rich domain of Gab3 to mediate late signaling of the macrophage colony-stimulating factor receptor. (PMID:11997510)
  • Hematopoiesis in mice lacking Gab3 is not impaired, macrophages develop in normal numbers and exhibit normal function, and there is no major immune deficiency in T- and B-lymphocyte responses to protein antigens or during viral infection. (PMID:12640125)
  • Together, our results suggest that Gab3 expression in CRC cells is important for Akt-Erk activation and cell proliferation. (PMID:28115166)
  • we conclude that Gab3 overexpression in human glioma mediates Akt activation and cancer cell proliferation (PMID:28291820)
  • Identification of Grb2-associated binding protein 3 expression to predict clinical outcomes and immunotherapeutic responses in lung adenocarcinoma. (PMID:35822560)
  • High expression of GRB2 associated binding protein 3 mRNA predicts positive prognosis in melanoma. (PMID:36545920)

Cross-species orthologs

5 orthologs

OrganismSymbolGene ID
danio_rerioENSDARG00000076998
danio_reriosi:ch73-149c21.1ENSDARG00000093081
mus_musculusGab3ENSMUSG00000032750
drosophila_melanogasterdosFBGN0016794
caenorhabditis_elegansWBGENE00004928

Paralogs (7): PHLDB1 (ENSG00000019144), GAB2 (ENSG00000033327), GAB1 (ENSG00000109458), PHLDB2 (ENSG00000144824), PLEKHS1 (ENSG00000148735), PHLDB3 (ENSG00000176531), GAB4 (ENSG00000215568)

Protein

Protein identifiers

GRB2-associated-binding protein 3Q8WWW8 (reviewed: Q8WWW8)

Alternative names: GRB2-associated binder 3, Growth factor receptor bound protein 2-associated protein 3

All UniProt accessions (2): Q8WWW8, H7C3J9

UniProt curated annotations — full annotation on UniProt →

Subunit / interactions. Interacts with PIK3R/p85, SHP2 and GRAP2/MONA. May interact with Grb2.

Post-translational modifications. Phosphorylated on tyrosine residue(s) after macrophage colony-stimulating factor (M-CSF) receptor stimulation.

Similarity. Belongs to the GAB family.

Isoforms (3)

UniProt IDNamesCanonical?
Q8WWW8-11yes
Q8WWW8-22
Q8WWW8-33

RefSeq proteins (3): NP_001075042, NP_001269212, NP_542179 (=MANE)

Domains & families (InterPro)

IDNameType
IPR001849PH_domainDomain
IPR011993PH-like_dom_sfHomologous_superfamily
IPR046355Gab1-4-likeFamily

Pfam: PF00169

UniProt features (12 total): region of interest 3, splice variant 2, compositionally biased region 2, modified residue 2, chain 1, domain 1, sequence variant 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q8WWW8-F155.140.10

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 (2): 344, 482

Function

Pathways and Gene Ontology

Reactome pathways

1 pathways

IDPathway
R-HSA-9680350Signaling by CSF1 (M-CSF) in myeloid cells

MSigDB gene sets: 157 (showing top): GOBP_MYELOID_CELL_DIFFERENTIATION, BENPORATH_ES_WITH_H3K27ME3, REACTOME_CYTOKINE_SIGNALING_IN_IMMUNE_SYSTEM, GOBP_MYELOID_LEUKOCYTE_DIFFERENTIATION, GOBP_MACROPHAGE_DIFFERENTIATION, GOMF_SIGNALING_ADAPTOR_ACTIVITY, MIKKELSEN_ES_ICP_WITH_H3K4ME3, MIKKELSEN_NPC_ICP_WITH_H3K4ME3, chrXq28, GOBP_MONONUCLEAR_CELL_DIFFERENTIATION, RAO_BOUND_BY_SALL4_ISOFORM_A, RB_DN.V1_UP, CAHOY_OLIGODENDROCUTIC, GSE5503_MLN_DC_VS_SPLEEN_DC_ACTIVATED_ALLOGENIC_TCELL_UP, GSE14415_INDUCED_TREG_VS_TCONV_DN

GO Biological Process (2): signal transduction (GO:0007165), macrophage differentiation (GO:0030225)

GO Molecular Function (1): signaling adaptor activity (GO:0035591)

GO Cellular Component (1): cytoplasm (GO:0005737)

Reactome top-level categories

Rollup of top-1 pathways:

CategoryPathways
Cytokine Signaling in Immune system1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cell communication1
cellular process1
signaling1
regulation of cellular process1
cellular response to stimulus1
myeloid leukocyte differentiation1
mononuclear cell differentiation1
protein-macromolecule adaptor activity1
intracellular anatomical structure1
cellular anatomical structure1

Protein interactions and networks

STRING

484 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
GAB3A1BGP04217821
GAB3PTPN11Q06124694
GAB3GRB2P29354682
GAB3CSF1P09603587
GAB3PLEKP08567573
GAB3PLEK2Q9NYT0568
GAB3CSF1RP07333519
GAB3CRKLP46109459
GAB3DUSP10Q9Y6W6454
GAB3FRS2Q8WU20435
GAB3AKT1P31749433
GAB3LYNP07948423
GAB3CRKP46108421
GAB3UNKQ9C0B0397
GAB3GAB2Q9UQC2392

IntAct

108 interactions, top by confidence:

ABTypeScore
PIK3R3PIK3CDpsi-mi:“MI:0914”(association)0.800
GRB2SH3PXD2Bpsi-mi:“MI:0914”(association)0.530
GAB3PDZD2psi-mi:“MI:0407”(direct interaction)0.440
GAB3MAST2psi-mi:“MI:0407”(direct interaction)0.440
GAB3SNX27psi-mi:“MI:0407”(direct interaction)0.440
GAB3SNTB1psi-mi:“MI:0407”(direct interaction)0.440
GAB3SNTA1psi-mi:“MI:0407”(direct interaction)0.440
GAB3PDZK1psi-mi:“MI:0407”(direct interaction)0.440
GAB3RHPN1psi-mi:“MI:0407”(direct interaction)0.440
GAB3PTPN3psi-mi:“MI:0407”(direct interaction)0.440
GAB3ARHGAP21psi-mi:“MI:0407”(direct interaction)0.440
GAB3GRID2IPpsi-mi:“MI:0407”(direct interaction)0.440
GAB3DLG4psi-mi:“MI:0407”(direct interaction)0.440
PATJGAB3psi-mi:“MI:0407”(direct interaction)0.440
DLG1GAB3psi-mi:“MI:0407”(direct interaction)0.440
GAB3IL16psi-mi:“MI:0407”(direct interaction)0.440
SNTG1GAB3psi-mi:“MI:0407”(direct interaction)0.440
GAB3MAGI2psi-mi:“MI:0407”(direct interaction)0.440
GAB3WHRNpsi-mi:“MI:0407”(direct interaction)0.440
APBA3GAB3psi-mi:“MI:0407”(direct interaction)0.440
GAB3PALS2psi-mi:“MI:0407”(direct interaction)0.440
GAB3HTRA4psi-mi:“MI:0407”(direct interaction)0.440
GAB3MPP2psi-mi:“MI:0407”(direct interaction)0.440
GAB3PICK1psi-mi:“MI:0407”(direct interaction)0.440
GAB3LIN7Cpsi-mi:“MI:0407”(direct interaction)0.440
GAB3LIN7Bpsi-mi:“MI:0407”(direct interaction)0.440
GAB3LIN7Apsi-mi:“MI:0407”(direct interaction)0.440

BioGRID (10): PTPN11 (Affinity Capture-Western), GAB3 (Affinity Capture-Western), GAB3 (Reconstituted Complex), GAB3 (Reconstituted Complex), GAB3 (Reconstituted Complex), GAB3 (Reconstituted Complex), GRB2 (Reconstituted Complex), MIPEP (Affinity Capture-MS), ABL1 (Affinity Capture-Western), LYN (Affinity Capture-Western)

ESM2 similar proteins: A5PMU4, A6QLU3, O89032, P35568, P35569, P35570, P81122, P84770, Q06649, Q13094, Q13191, Q13480, Q13625, Q1LY51, Q1LYG0, Q28224, Q3TTA7, Q4KM52, Q5NBX1, Q5RJW5, Q5TCZ1, Q60787, Q62415, Q6DFR2, Q6GQL0, Q6P4Y6, Q6ZNC4, Q80UZ0, Q8BM65, Q8BSM5, Q8C180, Q8CG79, Q8IVF5, Q8TEW8, Q8WU20, Q8WV28, Q8WWW8, Q91615, Q93073, Q96KQ4

Diamond homologs: A6QLU3, Q00IB7, Q13480, Q2WGN9, Q86SQ0, Q8BUL6, Q8K1N2, Q8WWW8, Q99PF6, Q9EQH1, Q9HB21, Q9QYY0, Q9ULM0, Q9UQC2, Q9VZZ9, Q9W5D0, Q9Z1S8, E9PXF8, O95248, P54644, Q63312, Q6NSJ2, Q6NTN5, Q6PDH0, Q6ZPE2, Q86IV4, Q86UU1, Q86WG5, Q8BSM5, B1AVY7, O35889, Q80TF6, Q96L93, Q9EQW7, Q9H1H9, Q9NQT8, Q9P2P6, Q9QZQ1, A8JQ65, B4I4Y1

SIGNOR signaling

0 interactions.

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 74 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
Ras activation upon Ca2+ influx through NMDA receptor557.1×1e-06
Unblocking of NMDA receptors, glutamate binding and activation554.4×1e-06
Negative regulation of NMDA receptor-mediated neuronal transmission554.4×1e-06
Assembly and cell surface presentation of NMDA receptors1050.8×8e-13
Dopamine Neurotransmitter Release Cycle549.6×2e-06
Long-term potentiation547.6×2e-06
Neurexins and neuroligins1039.4×7e-12
Protein-protein interactions at synapses631.9×1e-06

GO biological processes:

GO termPartnersFoldFDR
establishment or maintenance of epithelial cell apical/basal polarity973.7×1e-12
receptor clustering761.5×4e-09
protein localization to synapse553.9×3e-06
regulation of postsynaptic membrane neurotransmitter receptor levels641.9×1e-06
cell-cell adhesion912.9×3e-06
protein-containing complex assembly69.6×1e-03
chemical synaptic transmission77.6×1e-03

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic1
Likely pathogenic0
Uncertain significance57
Likely benign1
Benign2

Top pathogenic / likely-pathogenic (1)

Variant IDHGVSClassification
816364GRCh37/hg19 Xq21.1-28(chrX:78444738-155233731)x1Pathogenic

SpliceAI

1858 predictions. Top by Δscore:

VariantEffectΔscore
X:154696017:CTG:Cacceptor_gain1.0000
X:154699376:T:TAdonor_gain1.0000
X:154716170:T:TAdonor_gain1.0000
X:154750952:A:ACdonor_gain1.0000
X:154750953:C:CCdonor_gain1.0000
X:154750953:CGTAG:Cdonor_gain1.0000
X:154678291:GTTT:Gacceptor_gain0.9900
X:154678292:TTT:Tacceptor_gain0.9900
X:154678292:TTTC:Tacceptor_loss0.9900
X:154678294:TC:Tacceptor_loss0.9900
X:154678295:C:Aacceptor_loss0.9900
X:154678295:C:CCacceptor_gain0.9900
X:154680128:CTA:Cdonor_loss0.9900
X:154680129:TACC:Tdonor_loss0.9900
X:154680130:A:ATdonor_loss0.9900
X:154680131:C:Tdonor_loss0.9900
X:154680131:CCTG:Cdonor_gain0.9900
X:154680132:C:Adonor_loss0.9900
X:154696020:C:CCacceptor_gain0.9900
X:154697209:CCGTG:Cacceptor_gain0.9900
X:154697210:CGTG:Cacceptor_gain0.9900
X:154697210:CGTGC:Cacceptor_gain0.9900
X:154697214:C:CCacceptor_gain0.9900
X:154699292:A:ACdonor_gain0.9900
X:154699293:C:CCdonor_gain0.9900
X:154699293:CATTT:Cdonor_gain0.9900
X:154699297:T:TAdonor_gain0.9900
X:154699511:TGG:Tacceptor_gain0.9900
X:154699514:C:CCacceptor_gain0.9900
X:154700060:C:CCacceptor_gain0.9900

AlphaMissense

3848 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
X:154716309:A:CF31L1.000
X:154716309:A:TF31L1.000
X:154716310:A:GF31S1.000
X:154716311:A:GF31L1.000
X:154716326:A:GW26R1.000
X:154716326:A:TW26R1.000
X:154750984:C:AK14N1.000
X:154750984:C:GK14N1.000
X:154716080:A:GW108R0.999
X:154716080:A:TW108R0.999
X:154716112:A:GL97P0.999
X:154716139:A:TV88D0.999
X:154716145:A:GF86S0.999
X:154716263:A:GY47H0.999
X:154716268:A:GL45S0.999
X:154716324:C:AW26C0.999
X:154716324:C:GW26C0.999
X:154750991:A:GL12P0.999
X:154716078:C:AW108C0.998
X:154716078:C:GW108C0.998
X:154716106:G:TA99D0.998
X:154716112:A:TL97Q0.998
X:154716117:G:CF95L0.998
X:154716117:G:TF95L0.998
X:154716119:A:GF95L0.998
X:154716304:A:GL33P0.998
X:154716310:A:CF31C0.998
X:154716314:A:GW30R0.998
X:154716314:A:TW30R0.998
X:154716317:G:TR29S0.998

dbSNP variants (sampled 300 via entrez): RS1000060258 (X:154724907 A>C), RS1000255046 (X:154747548 C>A), RS1000255455 (X:154701967 C>T), RS1000436453 (X:154691439 G>A), RS1000561373 (X:154731572 T>C), RS1000729784 (X:154740902 T>C), RS1000839568 (X:154710005 G>A,C), RS1000858353 (X:154681057 A>C), RS1000858540 (X:154680476 A>C), RS1000862070 (X:154749647 C>T), RS1000911369 (X:154730996 A>C), RS1000983675 (X:154693399 T>G), RS1001220938 (X:154715278 T>C), RS1001227841 (X:154726090 T>C), RS1001273306 (X:154715637 C>T)

Disease associations

OMIM: gene MIM:300482 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

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

GWAS associations

3 associations (top):

StudyTraitp-value
GCST004334_12Mean corpuscular hemoglobin2.000000e-29
GCST90002389_498Lymphocyte percentage of white cells4.000000e-09
GCST90002397_164Mean spheric corpuscular volume3.000000e-09

EFO canonical traits (2, from GWAS)

EFO IDTrait name
EFO:0004527mean corpuscular hemoglobin
EFO:0007993lymphocyte percentage of leukocytes

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

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

CTD chemical–gene interactions

26 total (human), top 26 by PubMed support.

ChemicalActions (top 5)PubMed papers
Nickelincreases expression2
propionaldehydeincreases expression1
bisphenol Aaffects cotreatment, increases methylation1
butyraldehydeincreases expression1
tobacco tardecreases expression, decreases reaction1
benzo(e)pyrenedecreases methylation1
potassium chromate(VI)decreases expression1
diallyl disulfidedecreases expression, decreases reaction1
maleic acidincreases expression1
CGP 52608affects binding, increases reaction1
abrineincreases expression1
jinfukangincreases expression1
Sunitinibincreases expression1
Fulvestrantaffects cotreatment, increases methylation1
Acetaminophenincreases expression1
Benzo(a)pyreneaffects methylation, decreases methylation1
Cadmiumincreases abundance, increases expression1
Doxorubicindecreases expression1
Estradiolaffects cotreatment, increases expression1
Methapyrilenedecreases methylation1
Phthalic Acidsdecreases expression, decreases methylation1
Tobacco Smoke Pollutiondecreases expression1
Tretinoinincreases expression1
Triclosandecreases expression1
Antirheumatic Agentsdecreases expression1
Cadmium Chlorideincreases abundance, increases expression1

Clinical trials (associated diseases)

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

No linked Atlas pages yet — the cross-entity mesh grows as the corpus expands.