Rap1a - RAS-related protein 1a

Enables GTPase activity and small GTPase binding activity. Involved in positive regulation of vasculogenesis. Acts upstream of or within several processes, including negative regulation of synaptic vesicle exocytosis; positive regulation of ERK1 and ERK2 cascade; and positive regulation of neuron projection development. Located in several cellular components, including cell junction; neuron projection; and plasma membrane. Part of guanyl-nucleotide exchange factor complex. Is expressed in brain; early conceptus; hemolymphoid system gland; and oocyte. Orthologous to human RAP1A (RAP1A, member of RAS oncogene family). [provided by Alliance of Genome Resources, Apr 2022]