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. 1979 Mar;137(3):1459-63.
doi: 10.1128/jb.137.3.1459-1463.1979.

Derepression of nitrogenase activity in glutamine auxotrophs of Rhodopseudomonas capsulata

J D Wall, H Gest

Derepression of nitrogenase activity in glutamine auxotrophs of Rhodopseudomonas capsulata

J D Wall et al. J Bacteriol. 1979 Mar.

Abstract

In contrast to wild-type cells, glutamine auxotrophs of the photosynthetic bacterium Rhodopseudomonas capsulata synthesize nitrogenase, produce H2 (catalyzed by nitrogenase), and continue to reduce dinitrogen to ammonia in the presence of exogenous NH4+. The glutamine synthetase activity of such mutants is less than 2% of that observed in the wild type. It appears that glutamine synthetase plays a significant role in regulation of nitrogenase synthesis in R. capsulata.

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References

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