RASD2

gene
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Also known as TEM2RhesMGC:4834

Summary

RASD2 (RASD family member 2, HGNC:18229) is a protein-coding gene on chromosome 22q12.3, encoding GTP-binding protein Rhes (Q96D21). GTPase signaling protein that binds to and hydrolyzes GTP.

This gene belongs to the Ras superfamily of small GTPases and is enriched in the striatum. The encoded protein functions as an E3 ligase for attachment of small ubiquitin-like modifier (SUMO). This protein also binds to mutant huntingtin (mHtt), the protein mutated in Huntington disease (HD). Sumoylation of mHTT by this protein may cause degeneration of the striatum. The protein functions as an activator of mechanistic target of rapamycin 1 (mTOR1), which in turn plays a role in myelination, axon growth and regeneration. Reduced levels of mRNA expressed by this gene were found in HD patients.

Source: NCBI Gene 23551 — RefSeq curated summary.

At a glance

  • GWAS associations: 5
  • Clinical variants (ClinVar): 31 total
  • MANE Select transcript: NM_014310

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:18229
Approved symbolRASD2
NameRASD family member 2
Location22q12.3
Locus typegene with protein product
StatusApproved
AliasesTEM2, Rhes, MGC:4834
Ensembl geneENSG00000100302
Ensembl biotypeprotein_coding
OMIM612842
Entrez23551

Gene structure

Transcript identifiers

Ensembl transcripts: 6 — 6 protein_coding

ENST00000216127, ENST00000885869, ENST00000885870, ENST00000885871, ENST00000885872, ENST00000918448

RefSeq mRNA: 4 — MANE Select: NM_014310 NM_001366725, NM_001376515, NM_001376516, NM_014310

CCDS: CCDS13916

Canonical transcript exons

ENST00000216127 — 3 exons

ExonStartEnd
ENSE000006535393554680135547080
ENSE000010446433555150335553999
ENSE000012843853554083135541500

Expression profiles

Bgee: expression breadth ubiquitous, 167 present calls, max score 97.74.

FANTOM5 (CAGE): breadth broad, TPM avg 5.4886 / max 933.3479, expressed in 418 samples.

FANTOM5 promoters (6 alternative TSS)

Promoter IDTPM avgSamples expressed
1920113.0478209
1920080.6433239
1920130.641385
1920100.541388
1920120.459881
1920090.155269

Top tissues by expression

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

TissueAnatomy IDExpression scoreQuality
putamenUBERON:000187497.74gold quality
caudate nucleusUBERON:000187397.18gold quality
nucleus accumbensUBERON:000188294.32gold quality
lower esophagus muscularis layerUBERON:003583390.61gold quality
lower esophagusUBERON:001347390.43gold quality
right frontal lobeUBERON:000281089.01gold quality
esophagogastric junction muscularis propriaUBERON:003584187.40gold quality
muscle layer of sigmoid colonUBERON:003580587.35gold quality
apex of heartUBERON:000209886.85gold quality
prefrontal cortexUBERON:000045186.82gold quality
Brodmann (1909) area 9UBERON:001354086.46gold quality
anterior cingulate cortexUBERON:000983586.06gold quality
dorsolateral prefrontal cortexUBERON:000983485.84gold quality
frontal cortexUBERON:000187085.45gold quality
neocortexUBERON:000195084.58gold quality
forebrainUBERON:000189082.41gold quality
lateral globus pallidusUBERON:000247682.29gold quality
postcentral gyrusUBERON:000258182.29gold quality
cerebral cortexUBERON:000095682.09gold quality
primary visual cortexUBERON:000243681.54gold quality
amygdalaUBERON:000187681.36gold quality
hypothalamusUBERON:000189880.55gold quality
superior frontal gyrusUBERON:000266180.16gold quality
corpus epididymisUBERON:000435980.08gold quality
gastrocnemiusUBERON:000138880.06gold quality
parietal lobeUBERON:000187279.91gold quality
brainUBERON:000095579.66gold quality
prostate glandUBERON:000236779.33gold quality
muscle of legUBERON:000138379.14gold quality
transverse colonUBERON:000115778.86gold quality

Single-cell (SCXA)

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

ExperimentMarker?Max mean expression
E-ANND-3yes3.54

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

75 targeting RASD2, 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-6867-5P100.0082.213464
HSA-MIR-4692100.0067.322066
HSA-MIR-4510100.0066.602050
HSA-MIR-6127100.0066.762188
HSA-MIR-6129100.0066.462080
HSA-MIR-6130100.0066.692012
HSA-MIR-6133100.0066.482064
HSA-MIR-4476100.0068.182030
HSA-MIR-6876-5P100.0067.682126
HSA-MIR-9-5P100.0072.282361
HSA-MIR-451499.9967.101870
HSA-MIR-568899.9673.234504
HSA-MIR-495-3P99.9672.814197
HSA-MIR-101-3P99.9475.032230
HSA-MIR-144-3P99.9473.982698
HSA-MIR-4731-5P99.8967.232537
HSA-MIR-605-3P99.8869.221833
HSA-MIR-449299.8768.253611
HSA-MIR-4728-5P99.8569.394718
HSA-MIR-6756-5P99.8267.972466
HSA-MIR-6842-5P99.8067.541587
HSA-MIR-7110-5P99.8067.841712
HSA-MIR-4713-5P99.7867.801794
HSA-MIR-92A-2-5P99.7567.012164
HSA-MIR-5004-5P99.6866.631294
HSA-MIR-6766-5P99.6867.702325
HSA-MIR-6892-3P99.6866.401178
HSA-MIR-452799.6667.43714
HSA-MIR-3177-5P99.6570.381174
HSA-MIR-29899.6367.561916

Literature-anchored findings (GeneRIF, showing 15)

  • Rhes is an imidazoline-regulated transcript in pancreatic beta-cells (PMID:16945334)
  • Rhes can interfere with the functional activity of wt and mutated TSHr and with the respective hormone-stimulated cAMP production of FSHr and LHr. (PMID:17556863)
  • The genes RASD2 might be vulnerability genes for neuropsychologically defined subgroups of schizophrenic patients. (PMID:18571626)
  • The monomeric G proteins AGS1 and Rhes selectively influence Galphai-dependent signaling to modulate N-type (CaV2.2) calcium channels. (PMID:18815223)
  • Binding to the Gbeta subunits involves the cationic regions of AGS1 and Rhes, and Data used Rhes-AGS1 chimeras to show that their different cationic regions determine the Gbeta-specificity of the interactions. (PMID:19255495)
  • The sequestering of Rhes through its binding to mutant huntingtin may decrease the ability of Rhes to perform vital physiological functions in the striatum neurons of Huntington disease patients. (Review) (PMID:23583659)
  • The findings of this study suggested that Rhes may play a crucial role in striatal iron homeostasis. (PMID:23999124)
  • Rhes robustly binds the autophagy regulator Beclin-1, decreasing its inhibitory interaction with Bcl-2 independent of JNK-1 signaling. (PMID:24324270)
  • Rhes is reduced in the brains of Huntington’s disease patients. (PMID:25556834)
  • Findings reveal that ras homolog enriched in striatum is localized also in striatal cholinergic interneurons and, most importantly, lack of this G-protein, significantly alters dopamine D2 receptor modulation of striatal cholinergic excitability. (PMID:25818655)
  • Rhes influences striatal cAMP/PKA-dependent signaling and synaptic plasticity in a gender-sensitive fashion (PMID:26190541)
  • Study demonstrated that variation in the gene coding for RASD2 (rs6518956) affects in vivo prefrontal and striatal phenotypes in healthy human subjects that are relevant to schizophrenia (PMID:26228524)
  • results support the hypothesis that Rhes expression is regulated by miRNA and indicate that miR-101 may be a potent modulator of Rhes expression in striatal neurons. (PMID:30064488)
  • These regions have been used to design peptides aimed at inhibiting RHES interactions and, therefore, mHtt sumoylation; in turn, these peptides will be used to develop small molecule inhibitors by both rational design and virtual screening of large compound libraries. (PMID:31638189)
  • Involvement of the Protein Ras Homolog Enriched in the Striatum, Rhes, in Dopaminergic Neurons’ Degeneration: Link to Parkinson’s Disease. (PMID:34070217)

Cross-species orthologs

2 orthologs

OrganismSymbolGene ID
mus_musculusRasd2ENSMUSG00000034472
rattus_norvegicusRasd2ENSRNOG00000014761

Paralogs (35): RALA (ENSG00000006451), REM1 (ENSG00000088320), RASL10A (ENSG00000100276), RASL12 (ENSG00000103710), RHEB (ENSG00000106615), RASD1 (ENSG00000108551), RERGL (ENSG00000111404), RAP1A (ENSG00000116473), RASL11A (ENSG00000122035), RAP2C (ENSG00000123728), RAP2A (ENSG00000125249), RRAS (ENSG00000126458), RAP1B (ENSG00000127314), RASL11B (ENSG00000128045), KRAS (ENSG00000133703), RRAS2 (ENSG00000133818), RERG (ENSG00000134533), REM2 (ENSG00000139890), RIT1 (ENSG00000143622), RALB (ENSG00000144118), RIT2 (ENSG00000152214), MRAS (ENSG00000158186), DIRAS3 (ENSG00000162595), GEM (ENSG00000164949), DIRAS2 (ENSG00000165023), RRAD (ENSG00000166592), RHEBL1 (ENSG00000167550), NKIRAS2 (ENSG00000168256), HRAS (ENSG00000174775), DIRAS1 (ENSG00000176490), RAP2B (ENSG00000181467), ERAS (ENSG00000187682), NKIRAS1 (ENSG00000197885), NRAS (ENSG00000213281), RASL10B (ENSG00000270885)

Protein

Protein identifiers

GTP-binding protein RhesQ96D21 (reviewed: Q96D21)

Alternative names: Ras homolog enriched in striatum, Tumor endothelial marker 2

All UniProt accessions (1): Q96D21

UniProt curated annotations — full annotation on UniProt →

Function. GTPase signaling protein that binds to and hydrolyzes GTP. Regulates signaling pathways involving G-proteins-coupled receptor and heterotrimeric proteins such as GNB1, GNB2 and GNB3. May be involved in selected striatal competencies, mainly locomotor activity and motor coordination.

Subunit / interactions. Monomer (Potential). Interacts with PIK3CA and UBE2I. Interacts with GNB1, GNB2 and GNB3. Interacts with HTT; interacts with mutant HTT (mHTT) with a much higher affinity than wild type HTT.

Subcellular location. Cell membrane.

Tissue specificity. Pancreatic endocrine cells (islets of Langerhans).

Post-translational modifications. Farnesylated. Farnesylation is required for membrane targeting.

Miscellaneous. Reduces cell survival in striatal cells with Huntington disease by binding to mutant Huntington disease protein (mHTT; poly-Gln region with 82 repeats) and inducing sumoylation of mHTT.

Similarity. Belongs to the small GTPase superfamily. RasD family.

RefSeq proteins (4): NP_001353654, NP_001363444, NP_001363445, NP_055125* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR001806Small_GTPaseFamily
IPR005225Small_GTP-bdDomain
IPR027417P-loop_NTPaseHomologous_superfamily
IPR052236Small_GTPase_RasDFamily

Pfam: PF00071

UniProt features (9 total): binding site 3, chain 1, propeptide 1, region of interest 1, short sequence motif 1, modified residue 1, lipid moiety-binding region 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q96D21-F183.110.60

Functional residue map

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

Ligand- & substrate-binding residues (3): 26–33; 73–77; 140–143

Post-translational modifications (2): 263, 263

Function

Pathways and Gene Ontology

Reactome pathways

0 pathways

MSigDB gene sets: 88 (showing top): GOBP_BEHAVIOR, GCANCTGNY_MYOD_Q6, GOBP_REGULATION_OF_PROTEIN_SUMOYLATION, MEF2_02, GOBP_CELL_CELL_SIGNALING, GOBP_PEPTIDYL_LYSINE_MODIFICATION, SRF_C, GOBP_PHOSPHATIDYLINOSITOL_3_KINASE_PROTEIN_KINASE_B_SIGNAL_TRANSDUCTION, GOBP_SYNAPTIC_TRANSMISSION_DOPAMINERGIC, GOBP_PROTEIN_SUMOYLATION, GOBP_POST_TRANSLATIONAL_PROTEIN_MODIFICATION, GOBP_SYNAPTIC_SIGNALING, GOBP_POSITIVE_REGULATION_OF_INTRACELLULAR_SIGNAL_TRANSDUCTION, GOBP_POSITIVE_REGULATION_OF_PHOSPHATIDYLINOSITOL_3_KINASE_PROTEIN_KINASE_B_SIGNAL_TRANSDUCTION, RYTTCCTG_ETS2_B

GO Biological Process (5): synaptic transmission, dopaminergic (GO:0001963), signal transduction (GO:0007165), locomotory behavior (GO:0007626), positive regulation of protein sumoylation (GO:0033235), positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction (GO:0051897)

GO Molecular Function (4): GTPase activity (GO:0003924), GTP binding (GO:0005525), G-protein beta-subunit binding (GO:0031681), nucleotide binding (GO:0000166)

GO Cellular Component (3): plasma membrane (GO:0005886), synapse (GO:0045202), membrane (GO:0016020)

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
chemical synaptic transmission1
cell communication1
cellular process1
signaling1
regulation of cellular process1
cellular response to stimulus1
behavior1
protein sumoylation1
regulation of protein sumoylation1
positive regulation of protein modification by small protein conjugation or removal1
phosphatidylinositol 3-kinase/protein kinase B signal transduction1
regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction1
positive regulation of intracellular signal transduction1
ribonucleoside triphosphate phosphatase activity1
guanyl ribonucleotide binding1
purine ribonucleoside triphosphate binding1
protein binding1
nucleoside phosphate binding1
heterocyclic compound binding1
membrane1
cell periphery1
cell junction1
cellular anatomical structure1

Protein interactions and networks

STRING

2621 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
RASD2HTTP42858946
RASD2BECN1Q14457907
RASD2CD248Q9HCU0885
RASD2PLXDC1Q8IUK5777
RASD2OXA1LQ15070668
RASD2PPP1R1BQ9UD71605
RASD2VAPAQ9P0L0604
RASD2IPO5O00410583
RASD2UBE2IP50550549
RASD2ADORA2AP29274518
RASD2ARHGEF17Q96PE2517
RASD2PRKACAP17612477
RASD2PRKACGP22612477
RASD2PRKACBP22694473
RASD2TCP1P17987470

IntAct

7 interactions, top by confidence:

ABTypeScore
RASD2LRP5psi-mi:“MI:0914”(association)0.530
RASD2LRP6psi-mi:“MI:0914”(association)0.530
RASD2RABAC1psi-mi:“MI:0915”(physical association)0.490
RASD2psi-mi:“MI:0915”(physical association)0.400

BioGRID (22): LRP5 (Affinity Capture-MS), LRP6 (Affinity Capture-MS), RAP1GDS1 (Affinity Capture-MS), SLC4A7 (Affinity Capture-MS), AKT1 (Affinity Capture-Western), PIK3R1 (Affinity Capture-Western), PIK3R1 (Reconstituted Complex), SLC4A7 (Affinity Capture-MS), LRP6 (Affinity Capture-MS), LRP5 (Affinity Capture-MS), RASD2 (Reconstituted Complex), RASD2 (Reconstituted Complex), RASD2 (Reconstituted Complex), RASD2 (Reconstituted Complex), SLC4A7 (Affinity Capture-MS)

ESM2 similar proteins: A1DZY4, A6QP66, O35626, O35929, O88910, O88954, P0C0E4, P35295, P51157, P51158, P53667, P53668, P53669, P55040, P55041, P55043, P63032, P63033, Q06AU5, Q12829, Q13368, Q13637, Q3SWY9, Q5E9J3, Q5FVY2, Q5R541, Q5RFI2, Q6DGN0, Q6IMA3, Q6IMA7, Q6IMB1, Q6P0U3, Q6T310, Q8AVS6, Q8IYK8, Q8QFP8, Q8VEL9, Q8VHP8, Q8VHQ4, Q8WXH6

Diamond homologs: A5A6J7, A6NIZ1, A8NU18, B4GFJ8, B4JFU8, B4NJ72, D3Z8L7, G4MZY8, O35626, O42277, O42785, O93856, O95057, P01112, P01113, P01114, P01115, P01117, P03967, P05774, P08642, P08644, P08645, P08647, P0CQ42, P0CQ43, P10114, P10301, P10833, P13856, P18613, P20171, P22123, P22126, P22278, P22279, P22280, P23175, P28775, P32252

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance27
Likely benign2
Benign0

Top pathogenic / likely-pathogenic (0)

SpliceAI

464 predictions. Top by Δscore:

VariantEffectΔscore
22:35546793:T:TAacceptor_gain1.0000
22:35546796:T:Aacceptor_gain1.0000
22:35546797:GCA:Gacceptor_loss1.0000
22:35546798:CA:Cacceptor_loss1.0000
22:35546799:A:AGacceptor_gain1.0000
22:35546799:AGCC:Aacceptor_loss1.0000
22:35546800:G:Cacceptor_loss1.0000
22:35546800:G:GAacceptor_gain1.0000
22:35546800:GC:Gacceptor_gain1.0000
22:35546800:GCC:Gacceptor_gain1.0000
22:35546800:GCCC:Gacceptor_gain1.0000
22:35546800:GCCCC:Gacceptor_gain1.0000
22:35547076:CACAG:Cdonor_loss1.0000
22:35547079:AGG:Adonor_loss1.0000
22:35547081:GTGAG:Gdonor_loss1.0000
22:35547082:T:Adonor_loss1.0000
22:35551498:TGCA:Tacceptor_loss1.0000
22:35551499:GCA:Gacceptor_loss1.0000
22:35551501:A:ATacceptor_loss1.0000
22:35551501:AG:Aacceptor_gain1.0000
22:35551501:AGG:Aacceptor_gain1.0000
22:35551501:AGGG:Aacceptor_gain1.0000
22:35551502:GG:Gacceptor_gain1.0000
22:35551502:GGG:Gacceptor_gain1.0000
22:35551502:GGGG:Gacceptor_gain1.0000
22:35551498:T:TAacceptor_gain0.9900
22:35551501:A:AGacceptor_gain0.9900
22:35551502:G:GGacceptor_gain0.9900
22:35551502:GGGGA:Gacceptor_gain0.9900
22:35541496:CCCAG:Cdonor_loss0.9800

AlphaMissense

1778 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
22:35546885:G:CG26R1.000
22:35546885:G:TG26C1.000
22:35546886:G:AG26D1.000
22:35546886:G:TG26V1.000
22:35546900:G:CG31R1.000
22:35546901:G:AG31D1.000
22:35546901:G:TG31V1.000
22:35546925:T:CF39S1.000
22:35546939:T:CF44L1.000
22:35546941:T:AF44L1.000
22:35546941:T:GF44L1.000
22:35546972:T:CF55L1.000
22:35546974:C:AF55L1.000
22:35546974:C:GF55L1.000
22:35546979:G:CR57P1.000
22:35547015:T:CL69P1.000
22:35547024:T:CL72P1.000
22:35547026:G:AD73N1.000
22:35547026:G:CD73H1.000
22:35547027:A:CD73A1.000
22:35547027:A:GD73G1.000
22:35547027:A:TD73V1.000
22:35547028:T:AD73E1.000
22:35547028:T:GD73E1.000
22:35547036:G:AG76D1.000
22:35547047:T:AF80I1.000
22:35547047:T:CF80L1.000
22:35547047:T:GF80V1.000
22:35547048:T:CF80S1.000
22:35547048:T:GF80C1.000

dbSNP variants (sampled 300 via entrez): RS1000072954 (22:35534772 C>A,T), RS1000160776 (22:35550623 G>A), RS1000212787 (22:35551000 G>A), RS1000263034 (22:35534495 T>C), RS1000425121 (22:35535036 C>T), RS1000541005 (22:35539165 C>T), RS1000923296 (22:35539209 T>G), RS1001101938 (22:35545316 G>A), RS1001134686 (22:35533392 C>A,T), RS1001152446 (22:35540161 G>A), RS1001301626 (22:35545788 G>A,C), RS1001502501 (22:35533023 G>A,T), RS1001555343 (22:35546001 G>A), RS1001727142 (22:35533829 A>T), RS1001816460 (22:35545575 A>T)

Disease associations

OMIM: gene MIM:612842 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

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

GWAS associations

5 associations (top):

StudyTraitp-value
GCST005316_259Intelligence (MTAG)3.000000e-09
GCST005958_13Waist-to-hip ratio adjusted for BMI (age >50)1.000000e-06
GCST005962_33Waist-to-hip ratio adjusted for BMI x sex x age interaction (4df test)6.000000e-06
GCST007013_1Hippocampal volume in mild cognitive impairment2.000000e-07
GCST007576_283Chronotype1.000000e-09

EFO canonical traits (6, from GWAS)

EFO IDTrait name
EFO:0004337intelligence
EFO:0007788BMI-adjusted waist-hip ratio
EFO:0008007age at assessment
EFO:0008343sex interaction measurement
EFO:0005035hippocampal volume
EFO:0008328chronotype measurement

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

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

CTD chemical–gene interactions

29 total (human), top 29 by PubMed support.

ChemicalActions (top 5)PubMed papers
Nickeldecreases expression2
Cadmium Chlorideincreases expression2
ethyl-p-hydroxybenzoatedecreases expression1
sodium arseniteincreases expression1
butyraldehydeincreases expression1
S-(1,2-dichlorovinyl)cysteineaffects response to substance, increases expression, affects cotreatment, decreases expression1
pentanalincreases expression1
perfluorooctane sulfonic acidincreases expression1
CGP 52608increases reaction, affects binding1
perfluoro-n-nonanoic acidincreases expression1
ICG 001increases expression1
abrinedecreases expression1
4-(4-((5-(4,5-dimethyl-2-nitrophenyl)-2-furanyl)methylene)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzoic acidincreases expression1
Rosiglitazoneincreases expression1
Resveratrolaffects cotreatment, decreases expression1
Decitabineaffects expression1
Sunitinibdecreases expression1
Acetaminophenincreases expression1
Benzo(a)pyreneaffects methylation, increases methylation1
Cisplatinaffects expression1
Lipopolysaccharidesdecreases expression, affects response to substance, increases expression, affects cotreatment1
Plant Extractsaffects cotreatment, decreases expression1
Tobacco Smoke Pollutiondecreases expression1
Triclosanincreases expression1
1-Methyl-4-phenylpyridiniumincreases expression1
Gold Compoundsdecreases methylation, increases expression1
Okadaic Acidincreases expression1
Copper Sulfateincreases expression1
Acrylamideincreases 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.