E1 component of pyruvate dehydrogenase complex does not regulate the expression of NADPH-ferredoxin reductase in Azotobacter vinelandii.

E1 component of pyruvate dehydrogenase complex does not regulate the expression of NADPH-ferredoxin reductase in Azotobacter vinelandii. Research Abstract Details 

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E1 component of pyruvate dehydrogenase complex does not regulate the expression of NADPH-ferredoxin reductase in Azotobacter vinelandii. Abstract Text:

Buem-Seek Park,Young-Man Kwon,Rajkumar Pyla,John A Boyle,Yean-Sung Jung,Buem-Seek Park,Young-Man Kwon,Rajkumar Pyla,John A Boyle,Yean-Sung Jung,

In Azotobacter vinelandii, the E1 component of pyruvate dehydrogenase complex (PDHE1) is proposed to be a key regulatory protein in an oxidative stress management system that responds to superoxide. This proposal was tested by constructing an A. vinelandii mutant that had a disruption of aceE gene encoding PDHE1. This mutant exhibited wild-type exponential growth and a normal response to oxidative stress induced by paraquat. Electrophoretic mobility-shift assays revealed that a protein previously shown to bind to a paraquat-activatable DNA promoter was still present in the extract prepared from the mutant, implying that the protein cannot be PDHE1. These observations strongly contradict the previous claim that PDHE1 is a DNA-binding protein that is directly involved in the A. vinelandii oxidative stress-regulatory system.

E1 component of pyruvate dehydrogenase complex does not regulate the expression of NADPH-ferredoxin reductase in Azotobacter vinelandii. Publishing Authors By Initials

BS Park,YM Kwon,R Pyla,JA Boyle,YS Jung,BS Park,YM Kwon,R Pyla,JA Boyle,YS Jung,

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E1 component of pyruvate dehydrogenase complex does not regulate the expression of NADPH-ferredoxin reductase in Azotobacter vinelandii. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: FEMS microbiology letters

VOLUME: 273

Page Numbers: 244-52

Journal Abbreviation: FEMS Microbiol. Lett.

ISSN: 0378-1097

DAY: 16

MONTH: 06

YEAR: 2007

E1 component of pyruvate dehydrogenase complex does not regulate the expression of NADPH-ferredoxin reductase in Azotobacter vinelandii. Information

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LANGUAGE: eng

NlmUniqueID: 7705721

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Grant and Affiliation Information for E1 component of pyruvate dehydrogenase complex does not regulate the expression of NADPH-ferredoxin reductase in Azotobacter vinelandii.

AFFILIATION: Department of Biochemistry and Molecular Biology, Mississippi State University, Mississippi State, Mississippi 39762, USA.

Country: England

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MEDLINETA: FEMS Microbiol Lett

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