FUNCTION: Guanine nucleotide exchange factor (GEF) for RAP1A, RAP2A and MRAS/M-Ras-GTP. Its association with MRAS inhibits Rap1 activation. {ECO:0000269|PubMed:10777494, ECO:0000269|PubMed:10934204}....FUNCTION: Guanine nucleotide exchange factor (GEF) for RAP1A, RAP2A and MRAS/M-Ras-GTP. Its association with MRAS inhibits Rap1 activation. {ECO:0000269|PubMed:10777494, ECO:0000269|PubMed:10934204}.View more >>
GO - Biological processes (BP): nervous system development [GO:0007399]; positive regulation of GTPase activity [GO:0043547]; Ras protein signal transduction [GO:0007265]; small GTPase mediated signal transduction [GO:0007264]...nervous system development [GO:0007399]; positive regulation of GTPase activity [GO:0043547]; Ras protein signal transduction [GO:0007265]; small GTPase mediated signal transduction [GO:0007264]View more >>
GO - Molecular function (MF): GTP-dependent protein binding [GO:0030742]; guanyl-nucleotide exchange factor activity [GO:0005085]...GTP-dependent protein binding [GO:0030742]; guanyl-nucleotide exchange factor activity [GO:0005085]View more >>
GO - Cellular component (CC): nuclear body [GO:0016604]; nucleoplasm [GO:0005654]; nucleus [GO:0005634]; plasma membrane [GO:0005886]...nuclear body [GO:0016604]; nucleoplasm [GO:0005654]; nucleus [GO:0005634]; plasma membrane [GO:0005886]View more >>