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  • Title: Purification and characterization of a dehydrogenase catalyzing conversion of N alpha-benzyloxycarbonyl-L-aminoadipic-delta-semialdehyde to N alpha-benzyloxycarbonyl-L-aminoadipic acid from rhodococcus sp. AIU Z-35-1.
    Author: Isobe K, Fukuda N, Nagasawa S.
    Journal: J Biosci Bioeng; 2007 Nov; 104(5):398-402. PubMed ID: 18086440.
    Abstract:
    The enzyme catalyzing conversion of N alpha-benzyloxycarbonyl-L-aminoadipic-delta-semialdehyde (N alpha-Z-L-AASA) to N alpha-benzyloxycarbonyl-L-aminoadipic acid (N alpha-Z-L-AAA) in Rhodococcus sp. AIU Z-35-1 was identified, and its characteristics were revealed. This reaction was catalyzed by a dehydrogenase with a molecular mass of 59 kDa. The dehydrogenase exhibited enzyme activity on not only N alpha-Z-L-AASA but also N alpha-Z-D-AASA and short chain aliphatic aldehydes, but not on aromatic aldehydes and alcohols. The apparent Km values for N alpha-Z-L-AASA, N alpha-Z-D-AASA and NAD+ were estimated to be 3.8 mM, 14.1 mM and 0.16 mM, respectively. The NH2 terminal amino acid sequence of this enzyme exhibited a similarity to those of a piperidein-6-carboxylate dehydrogenase from Streptomyces clavuligerus and a putative dehydrogenase from Rhodococcus sp. RHA 1, but not to those of other microbial aldehyde dehydrogenases.
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