This family includes aldoxime dehydratase, EC:4.99.1.5. This is a haem-containing enzyme, which catalyses the dehydration of aldoximes to their corresponding nitrile [1]. It also includes phenylacetaldoxime dehydratase, EC:4.99.1.7. This haem-containing enzyme catalyses the dehydration of Z-phenylacetaldoxime to phenylacetonitrile [2]. The enzyme forms an elliptic beta barrel, composed of eight beta-strands, flanked by alpha-helices [3].

1: Aldoxime dehydratase co-existing with nitrile hydratase and amidase in the iron-type nitrile hydratase-producer Rhodococcus sp. N-771. Kato Y, Yoshida S, Xie SX, Asano Y; J Biosci Bioeng. 2004;97:250-259. PMID:16233624

2: Novel heme-containing lyase, phenylacetaldoxime dehydratase from Bacillus sp. strain OxB-1: purification, characterization, and molecular cloning of the gene. Kato Y, Nakamura K, Sakiyama H, Mayhew SG, Asano Y; Biochemistry. 2000;39:800-809. PMID:10651646

3: X-ray crystal structure of michaelis complex of aldoxime dehydratase. Sawai H, Sugimoto H, Kato Y, Asano Y, Shiro Y, Aono S; J Biol Chem. 2009;284:32089-32096. PMID:19740758