This family of enzymes catalyses the conversion of L-2-amino-delta2-thiazoline-4-carboxylic acid (L-ATC) to N-carbamoyl-L-cysteine [1]. It cleaves the carbon-sulphur bond in the ring structure of L-ATC to produce N-carbamoyl-L-cysteine [2].

1: Identification, cloning, and sequencing of the genes involved in the conversion of D,L-2-amino-delta2-thiazoline-4-carboxylic acid to L-cysteine in Pseudomonas sp. strain ON-4a. Ohmachi T, Nishino M, Kawata M, Edo N, Funaki H, Narita M, Mori K, Tamura Y, Asada Y; Biosci Biotechnol Biochem. 2002;66:1097-1104. PMID:12092821

2: Purification and characterization of a novel L-2-amino-Delta2-thiazoline-4-carboxylic acid hydrolase from Pseudomonas sp. strain ON-4a expressed in E. coli. Tashima I, Yoshida T, Asada Y, Ohmachi T; Appl Microbiol Biotechnol. 2006;72:499-507. PMID:16550379