FUNCTION: Guanyl-nucleotide exchange factor that regulates small GTPases of the Rab family (PubMed:20937701, PubMed:18559336). Converts GDP-bound inactive form of RAB27A and RAB27B to the GTP-bound active forms (PubMed:20937701, PubMed:18559336). Converts GDP-bound inactive form of RAB3A, RAB3C and ...
FUNCTION: Guanyl-nucleotide exchange factor that regulates small GTPases of the Rab family (PubMed:20937701, PubMed:18559336). Converts GDP-bound inactive form of RAB27A and RAB27B to the GTP-bound active forms (PubMed:20937701, PubMed:18559336). Converts GDP-bound inactive form of RAB3A, RAB3C and RAB3D to the GTP-bound active forms, GTPases involved in synaptic vesicle exocytosis and vesicle secretion (By similarity). Plays a role in synaptic vesicle formation and in vesicle trafficking at the neuromuscular junction (By similarity). Involved in up-regulating a post-docking step of synaptic exocytosis in central synapses (By similarity). Probably by binding to the motor proteins KIF1B and KIF1A, mediates motor-dependent transport of GTP-RAB3A-positive vesicles to the presynaptic nerve terminals (By similarity). Plays a role in TNFA-mediated activation of the MAPK pathway, including ERK1/2 (PubMed:32761064). May link TNFRSF1A with MAP kinase activation (PubMed:9115275). May be involved in the regulation of TNFA-induced apoptosis (PubMed:11577081, PubMed:32761064). {ECO:0000250|UniProtKB:O08873, ECO:0000250|UniProtKB:Q80U28, ECO:0000269|PubMed:11577081, ECO:0000269|PubMed:18559336, ECO:0000269|PubMed:20937701, ECO:0000269|PubMed:32761064, ECO:0000269|PubMed:9115275}.
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GO - Biological processes (BP):
cell surface receptor signaling pathway [GO:0007166]; execution phase of apoptosis [GO:0097194]; positive regulation of MAPK cascade [GO:0043410]; regulation of apoptotic process [GO:0042981]; regulation of cell cycle [GO:0051726]; regulation of extrinsic apoptotic signaling pathway [GO:2001236]; re...
cell surface receptor signaling pathway [GO:0007166]; execution phase of apoptosis [GO:0097194]; positive regulation of MAPK cascade [GO:0043410]; regulation of apoptotic process [GO:0042981]; regulation of cell cycle [GO:0051726]; regulation of extrinsic apoptotic signaling pathway [GO:2001236]; regulation of extrinsic apoptotic signaling pathway via death domain receptors [GO:1902041]; regulation of Rab protein signal transduction [GO:0032483]
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GO - Molecular function (MF):
death receptor binding [GO:0005123]; guanyl-nucleotide exchange factor activity [GO:0005085]; protein kinase activator activity [GO:0030295]...
death receptor binding [GO:0005123]; guanyl-nucleotide exchange factor activity [GO:0005085]; protein kinase activator activity [GO:0030295]
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GO - Cellular component (CC):
axon [GO:0030424]; cytoplasm [GO:0005737]; cytosol [GO:0005829]; integral component of membrane [GO:0016021]; plasma membrane [GO:0005886]...
axon [GO:0030424]; cytoplasm [GO:0005737]; cytosol [GO:0005829]; integral component of membrane [GO:0016021]; plasma membrane [GO:0005886]
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