Anti-ceramide transporter 1 antibodies are used for the immunodetection of the protein encoded by the CERT1 gene. In humans, the canonical protein has a reported length of 624 amino acid residues and a mass of 70.8 kDa. Its subcellular localization is in the ER, Golgi, and cytoplasm. Alternative splicing is reported to yield 3 different isoforms for this protein. It is widely expressed across many tissue types. It is noted to be involved in cell proliferation and immune response pathways. Post-translational modifications have been described, including phosphorylation. The gene encoding this protein is implicated in Intellectual developmental disorder. Other names for this target antigen include CERTL, COL4A3BP, GPBP, MRD34, STARD11, and CERT. Gene orthologs have been identified in the mouse, rat, bovine, frog, chimpanzee and chicken species.