Anti-nudix hydrolase 13 antibodies are used in the immunodetection of the protein encoded by the NUDT13 gene. In humans, the canonical protein has a reported length of 352 amino acid residues and a mass of 39.7 kDa. Its subcellular localization is in the mitochondria. Alternative splicing is reported to yield 4 different isoforms for this protein. It is reported to be highly expressed in metastasis-suppressed chromosome 6 melanoma hybrids. A member of the Nudix hydrolase protein family, it is reported to be a NAD(P)H pyrophosphatase that hydrolyzes NADH into NMNH and AMP, and NADPH into NMNH and 2',5'-ADP. Other names for this target antigen include nucleoside diphosphate-linked moiety X motif 13, nudix (nucleoside diphosphate linked moiety X)-type motif 13, nudix motif 13, and NAD(P)H pyrophosphatase NUDT13, mitochondrial.