This domain is found at the C-terminus of hydroxyacylglutathione hydrolase enzymes. Substrate binding occurs at the interface between this domain and the catalytic domain (Pfam:PF00753) [1-3].

1: Crystal structure of human glyoxalase II and its complex with a glutathione thiolester substrate analogue. Cameron AD, Ridderstrom M, Olin B, Mannervik B; Structure. 1999;7:1067-1078. PMID:10508780

2: Flexible metal binding of the metallo-beta-lactamase domain: glyoxalase II incorporates iron, manganese, and zinc in vivo. Schilling O, Wenzel N, Naylor M, Vogel A, Crowder M, Makaroff C, Meyer-Klaucke W; Biochemistry. 2003;42:11777-11786. PMID:14529289

3: Biochemical and structural characterization of Salmonella typhimurium glyoxalase II: new insights into metal ion selectivity. Campos-Bermudez VA, Leite NR, Krog R, Costa-Filho AJ, Soncini FC, Oliva G, Vila AJ; Biochemistry. 2007;46:11069-11079. PMID:17764159