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 MEQGDCSLocalizationUniProt · 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.
- Systemic lupus erythematosus (SLE) MIM:152700
- Immunodeficiency 64 with lymphoproliferation (IMD64) MIM:618534
Disease | GeneticClinVar
30 pathogenic / likely-pathogenic of 511 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Immunodeficiency 64
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
- activation of GTPase activity
- B cell activation
- B cell proliferation
- cell differentiation
- inflammatory response to antigenic stimulus
- mast cell degranulation
- natural killer cell activation
- positive regulation of MAP kinase activity
- positive regulation of natural killer cell differentiation
- positive regulation of natural killer cell mediated cytotoxicity
- positive regulation of protein phosphorylation
- positive regulation of Ras protein signal transduction
- positive regulation of T cell differentiation in thymus
- Ras protein signal transduction
- regulation of ERK1 and ERK2 cascade
- regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction
- secretory granule localization
- signal transduction
- T cell activation
- T cell proliferation
- vesicle transport along microtubule
Molecular functions
- calcium ion binding
- diacylglycerol binding
- guanyl-nucleotide exchange factor activity
- identical protein binding
- lipid binding
- phosphatidylcholine binding
- zinc ion binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Ras-like guanine nucleotide exchange factor, N-terminal
- Ras guanine-nucleotide exchange factors catalytic domain
- EF-hand domain
- Protein kinase C-like, phorbol ester/diacylglycerol-binding domain
- Ras-like guanine nucleotide exchange factor
- EF-hand domain pair
- EF-Hand 1, calcium-binding site
- Diacylglycerol/phorbol-ester binding
- Ras guanine nucleotide exchange factor domain superfamily
- Ras guanine-nucleotide exchange factor, catalytic domain superfamily
- C1-like domain superfamily
- Phorbol esters/diacylglycerol binding domain (C1 domain)
- RasGEF domain
- RasGEF N-terminal motif
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.
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