Binds 2 Zn(2+) ions per subunit. Belongs to the peptidase M20A family. Could be the product of a pseudogene unlikely to encode a functional protein. Strain S288c has two stop codons in position 132 and 432, which disrupt the gene coding for this protein and produce three ORFs. Because of that it is not part of the S.cerevisiae S288c complete/reference proteome set. Truncated C-terminus. Truncated C-terminus.