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. 1984 Jul;159(1):400–403. doi: 10.1128/jb.159.1.400-403.1984

Derepression of nitrogenase by addition of malate to cultures of Rhodospirillum rubrum grown with glutamate as the carbon and nitrogen source.

T R Hoover, P W Ludden
PMCID: PMC215647  PMID: 6145702

Abstract

Rhodospirillum rubrum grown in continuous culture with glutamate as the sole fixed C and N source produced no nitrogenase, and the cultures were characterized by high extracellular ammonium concentrations. Addition of organic acids derepressed nitrogenase. Glutamate dehydrogenase, glutamine synthetase, glutamate synthase, malate dehydrogenase, nitrogenase, and ammonium were assayed before and after malate addition.

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Selected References

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