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Evidence for the presence of two D-amino acid oxidases inPseudomonas aeruginosa PAO

  • Microbiology and Cell Biology
  • Published:
Proceedings / Indian Academy of Sciences

Abstract

By the isolation of mutants that were unable to grow on L-hydroxyproline or DL-valine, it has been possible to demonstrate the presence of two different types of D-amino acid oxidase activities inPseudomonas aeruginosa PAO. One was the D-amino acid dehydrogenase, probably involved in the oxidation of a number of D-amino acids such as D-alanine, D-phenylalanine and D-valine. The other was the inducible oxidase, specific to the oxidation of allohydroxy-D-proline formed from L-hydroxyproline during its oxidation. Thus, it has been possible to delink the involvement of the general D-amino acid dehydrogenase in the oxidative breakdown of allohydroxy-Dsproline.

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Abbreviations

DCPIP:

2, 6, dichlorophenol-indophenol

Hyp:

hydroxyproline

Val:

valine

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Authors and Affiliations

  1. Department of Molecular Biology, School of Biological Sciences, Madurai University, 625 021, Madurai

    T Herbert Manoharan & Kunthala Jayaraman

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  1. T Herbert Manoharan
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  2. Kunthala Jayaraman
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Manoharan, T.H., Jayaraman, K. Evidence for the presence of two D-amino acid oxidases inPseudomonas aeruginosa PAO. Proceedings of the Indian Academy of Sciences - Section B 87, 25–29 (1978). https://doi.org/10.1007/BF03178970

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  • DOI: https://doi.org/10.1007/BF03178970

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