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. 1984 Dec;160(3):1027–1030. doi: 10.1128/jb.160.3.1027-1030.1984

Glucose-6-phosphate dehydrogenase deficiency in pleiotropic carbohydrate-negative mutant strains of Rhizobium meliloti.

C Cerveñanský, A Arias
PMCID: PMC215813  PMID: 6501224

Abstract

Several mutant strains of Rhizobium meliloti isolated after nitrosoguanidine mutagenesis were selected as unable to grow on mannose. Some of them also failed to grow on glucose, fructose, ribose, and xylose but grew on L-arabinose, galactose, and many other carbon sources. Biochemical analysis demonstrated that the mutants lacked NAD- and NADP-linked glucose-6-phosphate dehydrogenase activities that reside on a single enzyme species. One such mutant was found to accumulate glucose-6-phosphate, and this could partially explain the inhibition of growth observed on mixtures of permissive and nonpermissive carbon sources. Symbiotic properties remained unaffected in all these mutants.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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