Anti-AMPD3 antibodies are used in the immunodetection of the protein adenosine monophosphate deaminase 3. In humans, the canonical protein has a reported length of 767 amino acid residues and a mass of 88.8 kDa. Alternative splicing is reported to yield 6 different isoforms for this protein. A member of the Adenosine and AMP deaminases protein family, it is known to be involved with metabolic processes. Synonyms for this target antigen include AMP aminohydrolase, adenosine monophosphate deaminase (isoform E), erythrocyte AMP deaminase, erythrocyte type AMP deaminase, erythrocyte-specific AMP deaminase, and AMP deaminase 3.