Entrez Summary: The RAB5 protein is a small GTPase involved in membrane trafficking in the early endocytic pathway. The protein encoded by this gene binds the GTP-bound form of the RAB5 protein preferentially over the GDP-bound form, and functions as a guanine nucleotide exchange factor for RAB5. The encoded protein is found primarily as a tetramer in the cytoplasm and does not bind other members of the RAB family. Mutations in this gene cause macrocephaly alopecia cutis laxa and scoliosis (MACS) syndrome, an elastic tissue disorder, as well as the related connective tissue disorder, RIN2 syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2011].
UniProt Summary: Ras effector protein. May function as an upstream activator and/or downstream effector for RAB5B in endocytic pathway. May function as a guanine nucleotide exchange (GEF) of RAB5B, required for activating the RAB5 proteins by exchanging bound GDP for free GTP. {ECO:0000269|PubMed:11733506}.
Pfam DomainsGO Terms
Pfam Domains
RA
VPS9
GO Terms
GTPase regulator activity
Rab guanyl-nucleotide exchange factor activity
GTPase activator activity
small GTPase mediated signal transduction
positive regulation of GTPase activity
cellular component
regulation of GTPase activity
endocytosis
import into cell
positive regulation of hydrolase activity
regulation of hydrolase activity
positive regulation of catalytic activity
intracellular signal transduction
positive regulation of molecular function
vesicle-mediated transport
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)