Document Detail


PII signal transduction proteins: pivotal players in post-translational control of nitrogenase activity.
MedLine Citation:
PMID:  22210804     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The fixation of atmospheric nitrogen by the prokaryotic enzyme nitrogenase is an energy- expensive process and consequently it is tightly regulated at a variety of levels. In many diazotrophs this includes post-translational regulation of the enzyme's activity, which has been reported in both bacteria and archaea. The best understood response is the short-term inactivation of nitrogenase in response to a transient rise in ammonium levels in the environment. A number of proteobacteria species effect this regulation through reversible ADP-ribosylation of the enzyme, but other prokaryotes have evolved different mechanisms. Here we review current knowledge of post-translational control of nitrogenase and show that, for the response to ammonium, the P(II) signal transduction proteins act as key players.
Authors:
Luciano F Huergo; Fábio O Pedrosa; Marcelo Muller-Santos; Leda S Chubatsu; Rose A Monteiro; Mike Merrick; Emanuel M Souza
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Microbiology (Reading, England)     Volume:  158     ISSN:  1465-2080     ISO Abbreviation:  -     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-1-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9430468     Medline TA:  Microbiology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  176-190     Citation Subset:  -    
Affiliation:
Instituto Nacional de Ciência e Tecnologia da Fixação Biológica de Nitrogênio, Departamento de Bioquímica e Biologia Molecular, UFPR Curitiba, PR, Brazil.
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