Anti-CD351 antibodies are protein reagents that detect specific antigens. The CD351 antigen is another term for the human protein Fc alpha and mu receptor, encoded by the FCAMR gene. The protein is known to function as a receptor for the Fc fragment of IgA and IgM. Canonically, it has an amino acid length of 532 residues and a mass of 57.1 kilodaltons. Its subcellular localization is in the cell membrane and it is noted to be expressed by mesangial cells.