Anti-TCN2 antibodies are used in the immunodetection of the protein transcobalamin 2. In humans, the canonical protein has a reported length of 427 amino acid residues and a mass of 47.5 kDa. It is known to be a secreted protein. Alternative splicing is reported to yield 2 different isoforms for this protein. A member of the Eukaryotic cobalamin transport proteins protein family, it is known to be involved with the transport of ions. Synonyms for this target antigen include D22S750, II, TC, TC II, TC-2, TC2, TCII, and D22S676.