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PMID: 35518 Published · ppublish English Journal Article Research Support, U.S. Gov't, Non-P.H.S.

Derepression of nitrogenase activity in glutamine auxotrophs of Rhodopseudomonas capsulata.

Journal of bacteriology ·Vol. 137 ·No. 3 ·1979-03-00 ·Pages 1459-63

Wall JD, Gest H

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.

MeSH Terms
Ammonia/metabolism Enzyme Repression Glutamate-Ammonia Ligase/metabolism Glutamine/genetics,metabolism Hydrogen/metabolism Mutation Nitrogenase/metabolism Photosynthesis Rhodopseudomonas/genetics,metabolism
Chemicals
Glutamine Ammonia Hydrogen Nitrogenase Glutamate-Ammonia Ligase
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Wall J D
Gest H
References (19)
19 references, click to expand
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Article Info
Journal
Journal of bacteriology
Abbr.
J Bacteriol
ISSN
0021-9193
DOI
10.1128/jb.137.3.1459-1463.1979
Published
1979-03-00
Pages
1459-63
Language
English
Region
United States
NLM ID
2985120R
PMCID
PMC218340
Subset
IM
External Links
PubMed source DOI: 10.1128/jb.137.3.1459-1463.1979 PMC Full Text View journal details
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