Rab5a: Proteins and Enzymes

Rab5 is a 24 kDa GTP-binding protein that regulates the fusion of plasma membrane -derived clathrin-coated vesicles with early endosomes , and homotypic fusion among early endosomes1. Localized to the cytoplasmic side of the plasma membrane, clathrin -coated vesicles and early endosomes, Rab5 appears to regulate vesicle fusion through a cycle of GDP/GTP e xchange and GTP hydrolysis. The different guanine nuc leotide binding states of Rab5 may affect its ability to associate or dissociate with ...