SNTG2

gene
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Also known as SYN5G2SYN

Summary

SNTG2 (syntrophin gamma 2, HGNC:13741) is a protein-coding gene on chromosome 2p25.3, encoding Gamma-2-syntrophin (Q9NY99). Adapter protein that binds to and probably organizes the subcellular localization of a variety of proteins.

This gene encodes a protein belonging to the syntrophin family. Syntrophins are cytoplasmic peripheral membrane proteins that bind to components of mechanosenstive sodium channels and the extreme carboxy-terminal domain of dystrophin and dystrophin-related proteins. The PDZ domain of this protein product interacts with a protein component of a mechanosensitive sodium channel that affects channel gating. Absence or reduction of this protein product has been associated with Duchenne muscular dystrophy. There is evidence of alternative splicing yet the full-length nature of these variants has not been described.

Source: NCBI Gene 54221 — RefSeq curated summary.

At a glance

  • GWAS associations: 12
  • Clinical variants (ClinVar): 149 total — 1 pathogenic
  • MANE Select transcript: NM_018968

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:13741
Approved symbolSNTG2
Namesyntrophin gamma 2
Location2p25.3
Locus typegene with protein product
StatusApproved
AliasesSYN5, G2SYN
Ensembl geneENSG00000172554
Ensembl biotypeprotein_coding
OMIM608715
Entrez54221

Gene structure

Transcript identifiers

Ensembl transcripts: 18 — 8 protein_coding, 8 protein_coding_CDS_not_defined, 2 nonsense_mediated_decay

ENST00000308624, ENST00000407292, ENST00000450962, ENST00000452177, ENST00000463442, ENST00000467759, ENST00000471239, ENST00000472606, ENST00000475201, ENST00000489646, ENST00000494178, ENST00000498321, ENST00000912579, ENST00000912580, ENST00000912581, ENST00000912582, ENST00000912583, ENST00000941025

RefSeq mRNA: 1 — MANE Select: NM_018968 NM_018968

CCDS: CCDS46220

Canonical transcript exons

ENST00000308624 — 17 exons

ExonStartEnd
ENSE0000119121410983531098410
ENSE0000119122010981961098252
ENSE0000119122210835181083655
ENSE0000140675812378881238017
ENSE0000142728512473271247443
ENSE0000142815012593701259441
ENSE0000349633112091031209230
ENSE0000351133112397381239776
ENSE0000353060611376221137665
ENSE0000355403711377681137809
ENSE0000357814413673431367613
ENSE0000357892711730921173183
ENSE0000358022913162651316375
ENSE0000359185013084941308586
ENSE0000363552612673651267571
ENSE0000365359511655481165635
ENSE00003841354950849951068

Expression profiles

Bgee: expression breadth ubiquitous, 166 present calls, max score 89.87.

FANTOM5 (CAGE): breadth broad, TPM avg 1.1001 / max 50.7060, expressed in 355 samples.

FANTOM5 promoters (3 alternative TSS)

Promoter IDTPM avgSamples expressed
185510.6979264
185500.3984212
185540.00381

Top tissues by expression

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

TissueAnatomy IDExpression scoreQuality
sural nerveUBERON:001548889.87gold quality
male germ line stem cell (sensu Vertebrata) in testisCL:0000089 ∩ UBERON:000047387.42gold quality
right testisUBERON:000453480.72gold quality
left testisUBERON:000453380.64gold quality
calcaneal tendonUBERON:000370179.80gold quality
primordial germ cell in gonadCL:0000670 ∩ UBERON:000099179.19gold quality
testisUBERON:000047378.24gold quality
body of pancreasUBERON:000115076.99gold quality
cortical plateUBERON:000534376.42gold quality
spleenUBERON:000210675.21gold quality
tibial nerveUBERON:000132375.01gold quality
adenohypophysisUBERON:000219674.45gold quality
stromal cell of endometriumCL:000225573.05gold quality
subcutaneous adipose tissueUBERON:000219072.84gold quality
skin of legUBERON:000151172.29gold quality
body of uterusUBERON:000985372.08gold quality
pituitary glandUBERON:000000772.03gold quality
pancreasUBERON:000126471.86gold quality
skin of abdomenUBERON:000141671.35gold quality
colonic epitheliumUBERON:000039771.25gold quality
buccal mucosa cellCL:000233670.77silver quality
apex of heartUBERON:000209870.77gold quality
left uterine tubeUBERON:000130370.72gold quality
omental fat padUBERON:001041470.22gold quality
peritoneumUBERON:000235870.14gold quality
olfactory segment of nasal mucosaUBERON:000538669.37gold quality
adipose tissue of abdominal regionUBERON:000780869.06gold quality
esophagogastric junction muscularis propriaUBERON:003584168.73gold quality
lower esophagus muscularis layerUBERON:003583368.40gold quality
lower esophagusUBERON:001347368.33gold quality

Single-cell (SCXA)

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

ExperimentMarker?Max mean expression
E-ANND-3yes4.12

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

18 targeting SNTG2, 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-5692A100.0074.406850
HSA-MIR-118499.9968.191458
HSA-MIR-383-3P99.8565.841359
HSA-MIR-430799.8270.453374
HSA-MIR-10394-5P99.6566.831852
HSA-MIR-120599.6566.761826
HSA-MIR-3158-5P99.6567.511763
HSA-MIR-5003-5P99.6169.131624
HSA-MIR-426199.5970.303415
HSA-MIR-17-3P99.5566.771311
HSA-MIR-147B-5P99.4570.622432
HSA-MIR-32-3P99.3668.202517
HSA-MIR-397899.2468.392201
HSA-MIR-128699.0966.231046
HSA-MIR-4722-5P98.4666.341611
HSA-MIR-4684-3P98.2469.911075
HSA-MIR-495-5P97.6268.28682
HSA-MIR-549A-5P96.3568.08587

Literature-anchored findings (GeneRIF, showing 4)

  • role in regulating SCN5A gating by a PDZ domain-mediated interaction (PMID:12429735)
  • A de novo binding partner of X-linked neuroligin 4 and neuroligin 3, which correlates with autism-related mutations. (PMID:17292328)
  • MYT1L and the SNTG2 genes within the reported region could probably relate to the phenotypic discordance of the monozygotic twins. (PMID:23061379)
  • Overexpression of SNTG2, TRAF3IP2, and ITGA6 transcripts is associated with osteoporotic vertebral fracture in elderly women from community. (PMID:32602654)

Cross-species orthologs

5 orthologs

OrganismSymbolGene ID
danio_reriosntg2ENSDARG00000101660
mus_musculusSntg2ENSMUSG00000020672
rattus_norvegicusSntg2ENSRNOG00000004928
drosophila_melanogasterSyn2FBGN0034135
caenorhabditis_elegansWBGENE00017866

Paralogs (4): SNTA1 (ENSG00000101400), SNTG1 (ENSG00000147481), SNTB2 (ENSG00000168807), SNTB1 (ENSG00000172164)

Protein

Protein identifiers

Gamma-2-syntrophinQ9NY99 (reviewed: Q9NY99)

Alternative names: Syntrophin-5

All UniProt accessions (2): Q9NY99, F2Z2D2

UniProt curated annotations — full annotation on UniProt →

Function. Adapter protein that binds to and probably organizes the subcellular localization of a variety of proteins. May link various receptors to the actin cytoskeleton and the dystrophin glycoprotein complex.

Subunit / interactions. Interacts with the dystrophin protein DMD and related proteins DTNA and DTNB.

Subcellular location. Cell membrane. Sarcolemma. Cytoplasm. Cytoskeleton.

Tissue specificity. Widely expressed. Strong expression in brain and testis. In CNS, it is expressed in the perikaryon and proximal portion of the neuronal processes. Strong expression in the hippocampus, neuron-rich dendate granule cells, and pyramidal cell layers. Highly expressed in neurons of the cerebral cortex. Also expressed in the cerebellar cortex, deep cerebellar nuclei, thalamus, and basal ganglia.

Domain organisation. The association with dystrophin or related proteins probably leaves the PDZ domain available to recruit proteins to the membrane.

Similarity. Belongs to the syntrophin family.

Isoforms (2)

UniProt IDNamesCanonical?
Q9NY99-11yes
Q9NY99-22

RefSeq proteins (1): NP_061841* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR001478PDZDomain
IPR015482SyntrophinFamily
IPR036034PDZ_sfHomologous_superfamily
IPR055108Syntrophin_4thDomain

Pfam: PF00595, PF23012

UniProt features (20 total): strand 5, helix 3, sequence variant 3, domain 2, compositionally biased region 2, chain 1, sequence conflict 1, turn 1, region of interest 1, splice variant 1

Structure

Experimental structures (PDB)

1 structures.

PDBMethodResolution (Å)
7QQLX-RAY DIFFRACTION2.44

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q9NY99-F180.140.56

Function

Pathways and Gene Ontology

Reactome pathways

3 pathways

IDPathway
R-HSA-9913351Formation of the dystrophin-glycoprotein complex (DGC)
R-HSA-1474244Extracellular matrix organization
R-HSA-3000171Non-integrin membrane-ECM interactions

MSigDB gene sets: 66 (showing top): chr2p25, MODULE_205, FINAK_BREAST_CANCER_SDPP_SIGNATURE, LASTOWSKA_COAMPLIFIED_WITH_MYCN, GOMF_ACTIN_BINDING, KANG_IMMORTALIZED_BY_TERT_DN, GOMF_SIGNALING_RECEPTOR_BINDING, MODULE_207, GOCC_GLYCOPROTEIN_COMPLEX, GOCC_MEMBRANE_PROTEIN_COMPLEX, GOCC_SARCOLEMMA, GOCC_PLASMA_MEMBRANE_PROTEIN_COMPLEX, GOMF_CYTOSKELETAL_PROTEIN_BINDING, GOMF_STRUCTURAL_MOLECULE_ACTIVITY, MEISSNER_BRAIN_HCP_WITH_H3K4ME3_AND_H3K27ME3

GO Biological Process (1): central nervous system development (GO:0007417)

GO Molecular Function (5): actin binding (GO:0003779), structural molecule activity (GO:0005198), PDZ domain binding (GO:0030165), neuroligin family protein binding (GO:0097109), protein binding (GO:0005515)

GO Cellular Component (8): nucleoplasm (GO:0005654), cytoskeleton (GO:0005856), plasma membrane (GO:0005886), dystrophin-associated glycoprotein complex (GO:0016010), syntrophin complex (GO:0016013), sarcolemma (GO:0042383), cytoplasm (GO:0005737), membrane (GO:0016020)

Reactome top-level categories

Rollup of top-2 pathways:

CategoryPathways
Non-integrin membrane-ECM interactions1
Extracellular matrix organization1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure3
plasma membrane protein complex2
nervous system development1
system development1
cytoskeletal protein binding1
molecular_function1
protein domain specific binding1
signaling receptor binding1
binding1
nuclear lumen1
intracellular membraneless organelle1
membrane1
cell periphery1
glycoprotein complex1
dystrophin-associated glycoprotein complex1
plasma membrane1
intracellular anatomical structure1

Protein interactions and networks

STRING

820 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
SNTG2DTNBO60941887
SNTG2ATP11CQ8NB49873
SNTG2DMDP11532830
SNTG2DTNAQ9Y4J8797
SNTG2MYT1LQ9UL68622
SNTG2SOX3P35714598
SNTG2UTRNP46939557
SNTG2NLGN4XQ8N0W4528
SNTG2ACP1P24666526
SNTG2SNTB1Q13884513
SNTG2NLGN3Q9NZ94508
SNTG2PLEK2Q9NYT0505
SNTG2STX5Q13190505
SNTG2SNTB2Q13425503
SNTG2F9P00740497

IntAct

384 interactions, top by confidence:

ABTypeScore
PTENPTENpsi-mi:“MI:0915”(physical association)0.710
SCN5ASNTG2psi-mi:“MI:0407”(direct interaction)0.660
E6SNTG2psi-mi:“MI:0407”(direct interaction)0.610
SNTG2PTENpsi-mi:“MI:0407”(direct interaction)0.610
RPS6KA1SNTG2psi-mi:“MI:0407”(direct interaction)0.610
SNTG2E6psi-mi:“MI:0407”(direct interaction)0.610
SNTG2E6psi-mi:“MI:0915”(physical association)0.610
TaxSNTG2psi-mi:“MI:0407”(direct interaction)0.610
SNTG2Taxpsi-mi:“MI:0915”(physical association)0.610
NET1SNTG2psi-mi:“MI:0407”(direct interaction)0.610
SNTG2NET1psi-mi:“MI:0407”(direct interaction)0.610
RPS6KA1RPS6KA1psi-mi:“MI:0915”(physical association)0.590
SNTG2psi-mi:“MI:0915”(physical association)0.560
SNTG2psi-mi:“MI:0915”(physical association)0.560
DTNBSNTG2psi-mi:“MI:0915”(physical association)0.550
SNTG2DTNBpsi-mi:“MI:0914”(association)0.550

BioGRID (49): SNTG2 (Two-hybrid), SNTG2 (Affinity Capture-Western), VIMP (Affinity Capture-Western), DMD (Affinity Capture-MS), DTNB (Affinity Capture-MS), SNTA1 (Affinity Capture-MS), CTNNAL1 (Affinity Capture-MS), SNTB1 (Affinity Capture-MS), DTNA (Affinity Capture-MS), SNTB2 (Affinity Capture-MS), UTRN (Affinity Capture-MS), SNTG2 (Affinity Capture-MS), RNF31 (Affinity Capture-MS), SNTG2 (Affinity Capture-RNA), SNTG2 (Biochemical Activity)

ESM2 similar proteins: A1L2W9, B2RQE8, B5XG43, G9CGD6, O08969, O88387, P59113, Q0V987, Q0VC85, Q1KKW7, Q1KKZ1, Q32LP0, Q3UUV5, Q3ZBA3, Q4V7G1, Q503L1, Q53GA4, Q5FVW6, Q5PQT7, Q5R8M5, Q5U597, Q5XGP7, Q5ZL23, Q6P0G8, Q6PG29, Q7Z628, Q7Z6J4, Q80VL0, Q80YS6, Q86UX7, Q86WV1, Q8AW35, Q8BY35, Q8IZC4, Q8K1B8, Q8N556, Q8VH46, Q91ZM9, Q91ZT5, Q925E0

Diamond homologs: A0A140LI67, A5PKA5, A7UA95, E1JIT7, O14910, O15018, O19132, O35274, O35867, O35889, O62666, O62674, O62675, O62676, O62677, O62678, O88951, O88952, P11434, P29475, P29476, P31016, P51140, P55196, P57105, P78352, Q07436, Q0P5F3, Q12923, Q14005, Q29498, Q2KIB6, Q32LM6, Q3T0C9, Q3UHD6, Q4KL35, Q5F425, Q5RAA5, Q62108, Q64512

SIGNOR signaling

1 interactions.

AEffectBMechanism
SNTG2“form complex”DGCbinding

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 170 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
Neurexins and neuroligins814.3×2e-05
p75 NTR receptor-mediated signalling610.2×1e-03
G alpha (12/13) signalling events810.0×2e-04
Cell death signalling via NRAGE, NRIF and NADE510.0×4e-03
Signaling by NTRKs69.9×1e-03
Signaling by NTRK1 (TRKA)58.9×6e-03
Class B/2 (Secretin family receptors)58.7×6e-03
NRAGE signals death through JNK58.4×6e-03

GO biological processes:

GO termPartnersFoldFDR
positive regulation of synaptic transmission, glutamatergic624.0×3e-05
positive regulation of excitatory postsynaptic potential723.6×7e-06
non-canonical Wnt signaling pathway518.6×7e-04
transport across blood-brain barrier1011.5×7e-06
adenylate cyclase-modulating G protein-coupled receptor signaling pathway510.8×5e-03
synapse organization59.0×9e-03
positive regulation of GTPase activity58.8×9e-03
calcium ion transmembrane transport68.1×5e-03

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic1
Likely pathogenic0
Uncertain significance116
Likely benign19
Benign6

Top pathogenic / likely-pathogenic (1)

Variant IDHGVSClassification
60104GRCh38/hg38 2p25.3(chr2:50661-3293835)x1Pathogenic

SpliceAI

7810 predictions. Top by Δscore:

VariantEffectΔscore
2:1083517:GACGA:Gacceptor_gain1.0000
2:1083651:GGAAT:Gdonor_gain1.0000
2:1083652:GAAT:Gdonor_gain1.0000
2:1083652:GAATG:Gdonor_gain1.0000
2:1083656:G:GGdonor_gain1.0000
2:1098183:A:Gacceptor_gain1.0000
2:1133823:A:AGacceptor_gain1.0000
2:1133823:ACT:Aacceptor_gain1.0000
2:1133824:C:Gacceptor_gain1.0000
2:1133825:T:Aacceptor_gain1.0000
2:1165542:TGACA:Tacceptor_loss1.0000
2:1165543:GACA:Gacceptor_loss1.0000
2:1165544:ACAG:Aacceptor_loss1.0000
2:1165545:CAGG:Cacceptor_loss1.0000
2:1165546:A:AGacceptor_gain1.0000
2:1165546:A:ATacceptor_loss1.0000
2:1165547:G:GGacceptor_gain1.0000
2:1165547:G:GTacceptor_loss1.0000
2:1165547:GGT:Gacceptor_gain1.0000
2:1165547:GGTGC:Gacceptor_gain1.0000
2:1219955:A:Gdonor_gain1.0000
2:1238014:GAAC:Gdonor_gain1.0000
2:1259364:TTGCA:Tacceptor_loss1.0000
2:1259365:TGCAG:Tacceptor_loss1.0000
2:1259366:GCAGG:Gacceptor_loss1.0000
2:1259367:CAG:Cacceptor_loss1.0000
2:1259369:GGT:Gacceptor_gain1.0000
2:1259369:GGTGA:Gacceptor_gain1.0000
2:1259438:CAAGG:Cdonor_loss1.0000
2:1267364:GTTCT:Gacceptor_gain1.0000

AlphaMissense

3545 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
2:1098384:T:AI100K0.994
2:1137640:T:CL115S0.993
2:1165591:T:AV152D0.992
2:1316341:T:CF485S0.990
2:1098381:T:AV99D0.989
2:1267521:T:AW412R0.989
2:1267521:T:CW412R0.989
2:1308561:T:CF451S0.989
2:1098384:T:GI100R0.988
2:1137652:A:TD119V0.988
2:1316286:T:CF467L0.988
2:1316288:T:AF467L0.988
2:1316288:T:GF467L0.988
2:1137652:A:CD119A0.987
2:1137651:G:CD119H0.986
2:1137652:A:GD119G0.986
2:1137772:A:TN125I0.986
2:1165617:T:CF161L0.985
2:1165619:T:AF161L0.985
2:1165619:T:GF161L0.985
2:1098248:T:AI88K0.984
2:1247342:T:AW302R0.983
2:1247342:T:CW302R0.983
2:1247396:T:CF320L0.983
2:1247398:C:AF320L0.983
2:1247398:C:GF320L0.983
2:1316296:T:CL470P0.983
2:1098252:G:CK89N0.982
2:1098252:G:TK89N0.982
2:1137649:G:TG118V0.982

dbSNP variants (sampled 300 via entrez): RS1000000252 (2:994629 C>G,T), RS1000007891 (2:1033260 T>C), RS1000009395 (2:1324455 GAA>G,GAAA), RS1000019847 (2:1118746 T>C,G), RS1000019906 (2:1310509 A>G), RS1000032352 (2:1111617 T>A), RS1000036688 (2:1113846 G>C,T), RS1000042133 (2:1205466 G>T), RS1000042753 (2:1190798 A>G), RS1000054849 (2:1037063 A>G), RS1000058096 (2:1081274 A>G), RS1000106436 (2:1338781 C>G), RS1000122329 (2:1255358 A>G), RS1000122701 (2:1070915 C>T), RS1000128685 (2:1006520 G>A,C)

Disease associations

OMIM: gene MIM:608715 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

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

GWAS associations

12 associations (top):

StudyTraitp-value
GCST003263_49Post bronchodilator FEV1 in COPD2.000000e-07
GCST003265_383Post bronchodilator FEV1/FVC ratio in COPD4.000000e-06
GCST003988_13Hypothyroidism6.000000e-14
GCST005412_4Thrombin-activatable fibrinolysis inhibitor levels5.000000e-07
GCST005950_2Body mass index x sex x age interaction (4df test)5.000000e-75
GCST005951_193Body mass index1.000000e-72
GCST005952_2Body mass index (age>50)2.000000e-30
GCST005954_1Body mass index x age interaction4.000000e-07
GCST006088_54Familial squamous cell lung carcinoma6.000000e-06
GCST009870_26Calcific aortic valve stenosis9.000000e-06
GCST010002_382Refractive error6.000000e-25
GCST010396_265Gut microbiota (bacterial taxa, hurdle binary method)3.000000e-07

EFO canonical traits (8, from GWAS)

EFO IDTrait name
EFO:0004314forced expiratory volume
EFO:0004713FEV/FVC ratio
EFO:0004340body mass index
EFO:0008007age at assessment
EFO:0008343sex interaction measurement
EFO:0006953family history of lung cancer
EFO:0000266aortic stenosis
EFO:0007874gut microbiome measurement

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
Aflatoxin B1affects methylation, decreases expression2
bisphenol Fincreases methylation, affects cotreatment1
methyleugenoldecreases expression1
bisphenol Aaffects cotreatment, affects methylation, decreases methylation1
trichostatin Adecreases expression1
arseniteincreases methylation1
benzo(e)pyreneincreases methylation1
metolachloraffects methylation, increases abundance1
bisphenol Sdecreases methylation1
Resveratrolaffects cotreatment, decreases expression1
Fulvestrantincreases methylation, affects cotreatment, affects methylation1
Arsenicaffects methylation1
Benzo(a)pyreneincreases methylation1
Cadmiumincreases abundance, increases expression1
Copperaffects cotreatment, decreases expression1
Folic Aciddecreases expression1
Herbicidesaffects methylation, increases abundance1
Methapyrileneincreases methylation1
Methotrexatedecreases expression1
N-Nitrosopyrrolidinedecreases expression1
Nickeldecreases expression1
Rotenoneincreases expression1
Tobacco Smoke Pollutionincreases methylation1
Antirheumatic Agentsdecreases expression1
Cadmium Chlorideincreases abundance, increases expression1
Copper Sulfateincreases expression1

Clinical trials (associated diseases)

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