1887

Abstract

Strains of containing the Nif plasmid pRD1 were used to investigate the possibility that haem proteins are involved in the regulation by O of expression. Strains lacking 5-aminolaevulinate synthase (HemA), and hence normally unable to synthesize haem proteins, showed an identical response to O in the presence or absence of added aminolaevulinate (and hence of haem proteins). It was concluded that the regulatory protein NifL is not a haem protein.

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1988-06-01
2024-05-18
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