Seroatlas · Human Serome Atlas

RASGRP1

RAS guanyl-releasing protein 1

Also known as: CalDAG-GEFII, GRP1_HUMAN, RASGRP

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
O95267
Gene
RASGRP1
Ensembl
ENSG00000172575
Chromosome
15
Canonical length
797 aa
Protein class
Disease related genes, Human disease related genes, Predicted intracellular proteins, RAS pathway related proteins
Subcellular location
Plasma membrane,Cytosol
Quaternary structure
Homodimer

OverviewNCBI Gene

This gene is a member of a family of genes characterized by the presence of a Ras superfamily guanine nucleotide exchange factor (GEF) domain. It functions as a diacylglycerol (DAG)-regulated nucleotide exchange factor specifically activating Ras through the exchange of bound GDP for GTP. It activates the Erk/MAP kinase cascade and regulates T-cells and B-cells development, homeostasis and differentiation. Alternatively spliced transcript variants encoding different isoforms have been identified. Altered expression of the different isoforms of this protein may be a cause of susceptibility to systemic lupus erythematosus (SLE). [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

797 residues, UniProt reviewed canonical sequence.

>O95267|RASGRP1
     1  MGTLGKAREA PRKPSHGCRA ASKARLEAKP ANSPFPSHPS LAHITQFRMM VSLGHLAKGA
    61  SLDDLIDSCI QSFDADGNLC RSNQLLQVML TMHRIVISSA ELLQKVITLY KDALAKNSPG
   121  LCLKICYFVR YWITEFWVMF KMDASLTDTM EEFQELVKAK GEELHCRLID TTQINARDWS
   181  RKLTQRIKSN TSKKRKVSLL FDHLEPEELS EHLTYLEFKS FRRISFSDYQ NYLVNSCVKE
   241  NPTMERSIAL CNGISQWVQL MVLSRPTPQL RAEVFIKFIQ VAQKLHQLQN FNTLMAVIGG
   301  LCHSSISRLK ETSSHVPHEI NKVLGEMTEL LSSSRNYDNY RRAYGECTDF KIPILGVHLK
   361  DLISLYEAMP DYLEDGKVNV HKLLALYNHI SELVQLQEVA PPLEANKDLV HLLTLSLDLY
   421  YTEDEIYELS YAREPRNHRA PPLTPSKPPV VVDWASGVSP KPDPKTISKH VQRMVDSVFK
   481  NYDHDQDGYI SQEEFEKIAA SFPFSFCVMD KDREGLISRD EITAYFMRAS SIYSKLGLGF
   541  PHNFQETTYL KPTFCDNCAG FLWGVIKQGY RCKDCGMNCH KQCKDLVVFE CKKRAKNPVA
   601  PTENNTSVGP VSNLCSLGAK DLLHAPEEGP FTFPNGEAVE HGEESKDRTI MLMGVSSQKI
   661  SLRLKRAVAH KATQTESQPW IGSEGPSGPF VLSSPRKTAQ DTLYVLPSPT SPCPSPVLVR
   721  KRAFVKWENK DSLIKSKEEL RHLRLPTYQE LEQEINTLKA DNDALKIQLK YAQKKIESLQ
   781  LEKSNHVLAQ MEQGDCS

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against RASGRP1 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.

Antibody reachability
Cell surface
Secreted
No
Transmembrane segments
0
Mean surface accessibility (rSASA)
0.38
Highest tissue expression
36 nTPM

Expression across tissuesHPA

Tissue

  • thymus: 36 nTPM
  • cerebellum: 23 nTPM
  • retina: 17 nTPM
  • lymph node: 15 nTPM
  • cerebral cortex: 15 nTPM
  • tonsil: 13 nTPM

Single-cell type

  • müller glia: 262 nCPM
  • t-cells: 205 nCPM
  • nk-cells: 154 nCPM
  • renal collecting duct principal cells: 112 nCPM
  • brain excitatory neurons: 101 nCPM
  • renal connecting tubule cells: 96 nCPM

Immune cell

  • T-reg: 4.8 nTPM
  • memory CD8 T-cell: 2.3 nTPM
  • memory CD4 T-cell: 2 nTPM
  • gdT-cell: 1.8 nTPM
  • naive CD4 T-cell: 1.7 nTPM
  • naive CD8 T-cell: 1.7 nTPM

Brain region

  • cerebellum: 46 nTPM
  • pons: 45 nTPM
  • cerebral cortex: 44 nTPM
  • hippocampal formation: 33 nTPM
  • basal ganglia: 29 nTPM
  • white matter: 29 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about RASGRP1.

Disease | AllUniProt

Conditions RASGRP1 is implicated in, by any mechanism.

Disease | GeneticClinVar

30 pathogenic / likely-pathogenic of 511 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

Genetic constraint and essentialitygnomAD · DepMap

Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.

gnomAD LOEUF (loss-of-function intolerance)
0.32
gnomAD pLI
0.97
gnomAD missense Z
2.74
DepMap mean gene effect
0
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 3% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).

OntologyGO

Biological processes

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of RASGRP1 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads RASGRP1 as an antibody target. Whether an autoantibody or antibody against RASGRP1 could matter depends on whether native RASGRP1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

RASGRP1 is annotated at the cell surface, where native RASGRP1 is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.

Annotation status

The present source text does not explicitly label RASGRP1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/RASGRP1. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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