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Enzymes Responsible for the Conversion of Nα‐[(Benzyloxy)carbonyl]‐D‐lysine to Nα‐[(Benzyloxy)carbonyl]‐D‐aminoadipic Acid by Rhodococcus sp. AIU Z‐35‐1

The enzymes responsible for the conversion of Nα‐[(benzyloxy)carbonyl]‐D‐lysine (Nα‐Z‐D‐lysine) to Nα‐Z‐D‐aminoadipic acid (Nα‐Z‐D‐AAA) by Rhodococcus sp. AIU Z‐35‐1 were identified. Nα‐Z‐D‐Lysine was first converted to Nα‐Z‐D‐aminoadipic δ‐semialdehyde (Nα‐Z‐D‐AASA) by D‐specific amino acid deaminase, whereas Nα‐Z‐L‐lysine was converted to Nα‐Z‐L‐AASA by L‐specific amino acid oxidase. The resulting Nα‐Z‐D‐AASA was then converted to Nα‐Z‐D‐AAA by the same aldehyde dehydrogenase that is responsible for Nα‐Z‐L‐AASA oxidation. The product amount of the D‐specific amino acid deaminase reached the maximum at one day of cultivation in the L‐lysine medium. The aldehyde dehydrogenase reached the maximum at three days of cultivation.