Anti-trafficking protein particle complex subunit 3L antibodies are used for the immunodetection of the protein encoded by the TRAPPC3L gene. In humans, the canonical protein has a reported length of 181 amino acid residues and a mass of 20.6 kDa. Its subcellular localization is in the ER and Golgi. Alternative splicing is reported to yield 2 different isoforms for this protein. A member of the TRAPP small subunits protein family, it is believed to play a role in vesicular transport from endoplasmic reticulum to Golgi. Other names for this target antigen include BET3-like protein, TRAPPC3-like protein, trafficking protein particle complex 3 like, trafficking protein particle complex subunit 3 like, and trafficking protein particle complex subunit 3-like protein. Gene orthologs have been identified in the mouse, rat, bovine, frog, chimpanzee and chicken species.