The Escherichia coli ldcC gene encodes another lysine decarboxylase, probably a constitutive enzyme

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A gene (designated <i>ldcC</i>) mapped at 4.6 min on the <i>Escherichia coli</i> chromosome codes for a protein of 713 amino acids (aa) that shows strong similarities in both size and amino-acid sequence (69% identical residues and 85% conserved residues) to lysine decarboxylase (LDC) from <i>E. coli</i> (CadA, acid-inducible LDC, 715 aa) or from <i>Hafnia alvei</i> (739 aa). A pUC18 derivative carrying the <i>ldcC</i> gene conferred high LDC activities on an <i>E. coli</i> strain devoid of the functional <i>cadA</i> gene, even when the bacteria were grown under non-inducing conditions at physiological pH. Thus, the gene encodes another lysine decarboxylase, probably a constitutively expressed enzyme, the presence of which was suggested from the previous observations that low LDC activities were detectable in <i>cadA</i><sup>-</sup> mutant and non-induced wild-type cells.<br>

収録刊行物

  • Genes & genetic systems

    Genes & genetic systems 72(3), 167-172, 1997-06

    The Genetics Society of Japan

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各種コード

  • NII論文ID(NAID)
    10003761112
  • NII書誌ID(NCID)
    AA11077421
  • 本文言語コード
    ENG
  • 資料種別
    NOT
  • ISSN
    13417568
  • データ提供元
    CJP書誌  J-STAGE 
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