WFRF:(Teixeira Pedro Filipe)
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Reduced activity of glutamine synthetase in Rhodospirillum rubrum mutants lacking the adenylyltransferase GlnE
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- Jonsson, Anders (author)
- Stockholms universitet,Institutionen för biokemi och biofysik
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- Nordlund, Stefan (author)
- Stockholms universitet,Institutionen för biokemi och biofysik
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- Teixeira, Pedro Filipe (author)
- Stockholms universitet,Institutionen för biokemi och biofysik
- (creator_code:org_t)
- Elsevier BV, 2009
- 2009
- English.
- In: Research in Microbiology. - : Elsevier BV. - 0923-2508 .- 1769-7123. ; 160:8, s. 581-4
- Journal article (peer-reviewed)
Abstract
Subject headings
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- In the nitrogen-fixing bacterium Rhodospirillum rubrum, the GlnE adenylyltransferase (encoded by glnE) catalyzes reversible adenylylation of glutamine synthetase, thereby regulating nitrogen assimilation. We have generated glnE mutant strains that are unable to adenylylate glutamine synthetase (GS). Surprisingly, the activity of GS was lower in the mutants than in the wild type, even when grown in nitrogen-fixing conditions. Our results support the proposal that R. rubrum can only cope with the absence of an adenylylation system in the presence of lowered GS expression or activity. In general terms, this report also provides further support for the central role of GS in bacterial metabolism.
Keyword
- Rhodospirillum rubrum
- Adenylyltransferase
- Glutamine synthetase
- glnE
- NATURAL SCIENCES
- NATURVETENSKAP
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- ref (subject category)
- art (subject category)
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