Anti-failed axon connections homolog, metaxin like GST domain containing antibodies are used for the immunodetection of the protein encoded by the FAXC gene. In humans, the canonical protein has a reported length of 409 amino acid residues and a mass of 46.8 kDa. Its subcellular localization is in the membrane. Alternative splicing is reported to yield 2 different isoforms for this protein. A member of the FAX protein family, it is believed to play a role in axonal development. Other names for this target antigen include failed axon connections homolog. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.