This family includes N-methylhydaintoinase B which converts hydantoin to N-carbamyl-amino acids, and 5-oxoprolinase (Swiss:P97608) EC:3.5.2.9 which catalyses the formation of L-glutamate from 5-oxo-L-proline. These enzymes are part of the oxoprolinase family and are related to Pfam:PF01968.

1: Cloning and sequencing of the genes involved in the conversion of 5-substituted hydantoins to the corresponding L-amino acids from the native plasmid of Pseudomonas sp. strain NS671. Watabe K, Ishikawa T, Mukohara Y, Nakamura H; J Bacteriol 1992;174:962-969. PMID:1732229