The function of Ensembl gene identifier ENSG00000177548 (RABEP2, rabaptin, RAB GTPase binding effector protein 2) is as follows. Plays a role in membrane trafficking and in homotypic early endosome fusion (PubMed:9524116). Participates in arteriogenesis by regulating vascular endothelial growth factor receptor 2/VEGFR2 cell surface expression and endosomal trafficking (PubMed:29425100). By interacting with SDCCAG8, localizes to centrosomes and plays a critical role in ciliogenesis (PubMed:27224062). {ECO:0000269|PubMed:27224062, ECO:0000269|PubMed:29425100, ECO:0000269|PubMed:9524116}.