MADD polyclonal antibody

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).