Binds 2 copper ions per subunit. Belongs to the copper type II ascorbate-dependent monooxygenase family. Could be the product of a pseudogene. The human MOXD2 gene lacks the last 2 terminal exons, as well as the 3'-UTR and poly(A) signal found in all other mammalian sequences. This deletion, which occured after the divergence of humans and chimpanzees, may interfere with proper mRNA processing and/or translation.