1887

Abstract

Summary: A new type of haem-deficient mutant was isolated in K12 by neomycin selection. The mutant, designated SASX38, accumulated uroporphyrin, coproporphyrin and protoporphyrin. Since it possessed normal ferrochelatase activity, it was assumed to be deficient in protoporphyrinogen oxidase activity. The gene affected in the mutant was designated Mapping of the gene by phage P1-mediated transduction showed that it was located very close to the gene (frequency of cotransduction 78.7%), between the and markers. This location is distinct from the other known loci in K12.

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/content/journal/micro/10.1099/00221287-113-2-297
1979-08-01
2021-07-28
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