1887

Abstract

SUMMARY: Derivatives of carrying F prime or P prime plasmids with Klebsiella and genes had specific nitrogenase activities similar to Klebsiella in selective conditions, even to showing ‘hyperinduction’ under argon. No evidence was obtained for catabolite repression of normal expression but dibutyl cyclic AMP often augmented ‘hyperinduction’. In non-selective conditions the Klebsiella determinants were rapidly lost from the plasmids; the low levels of expression and temperature-sensitive expression previously reported were probably due to ready loss of in the test conditions used.

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1977-02-01
2021-05-15
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