Agricultural and Biological Chemistry
Online ISSN : 1881-1280
Print ISSN : 0002-1369
ISSN-L : 0002-1369
Simultaneous Synthesis of Pectin Lyase and Carotovoricin Induced by Mitomycin C, Nalidixic Acid or Ultraviolet Light Irradiation in Erwinia carotovora
Yoshifumi ITOHKazuo IZAKIHajime TAKAHASHI
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1980 Volume 44 Issue 5 Pages 1135-1140

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Abstract

When Erwinia carotovora Er, a bacteriocinogenic strain, was induced after irradiation by ultraviolet (UV) light or inhibitors of DNA synthesis, such as mitomycin C or nalidixic acid, pectin lyase and bacteriocin (designated carotovoricin) activity appeared in the culture fluid. The optimal dose of each of these agents for producing the enzyme or bacteriocin was identical, and the time courses for both were essentially the same. Therefore, we assumed that the synthesis of the enzyme and bacteriocin was regulated by the same mechanism, in which a repressor inactivated by UV light, mitomycin C or nalidixic acid was involved. The other three bacteriocinogenic strains of E. carotovora also formed pectin lyase, in addition to carotovoricin in the presence of mitomycin C, indicating that simultaneous syntheses of pectin lyase and carotovoricin were widespread pheno-menon in bacteriocinogenic strains of E. carotovora.

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