Anti-RAB3GAP1 antibodies are used in the immunodetection of the protein RAB3 GTPase activating protein catalytic subunit 1. In humans, the canonical protein has a reported length of 981 amino acid residues and a mass of 110.5 kDa. Its subcellular localization is in the ER and cytoplasm. Up to 3 different isoforms have been reported for this protein. It is ubiquitously expressed across many tissue types. A member of the Rab3-GAP catalytic subunit protein family, RAB3GAP1 is a known catalytic subunit of the Rab3 GTPase-activating (Rab3GAP) complex composed of RAB3GAP1 and RAB3GAP2, which has GTPase-activating protein (GAP) activity towards various Rab3 subfamily members (RAB3A, RAB3B, RAB3C and RAB3D), RAB5A and RAB43, and guanine nucleotide exchange factor (GEF) activity towards RAB18. Synonyms for this target antigen include P130, RAB3GAP, RAB3GAP130, WARBM1, rab3 GTPase-activating protein catalytic subunit, and MARTS2. A number of RAB3GAP1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.