Literature DB >> 6354256

Influence of pN2 and pD2 on HD formation by various nitrogenases.

J L Li, R H Burris.   

Abstract

Formation of HD from D2 has been demonstrated with nitrogenase preparations from Azotobacter vinelandii, Clostridium pasteurianum, Klebsiella pneumoniae, and Azospirillum sp. We conclude that the formation of HD from D2 is a general property of nitrogenases. However, the nitrogenases differ in their Ki values for D2 (N2 fixation) and in their rates of catalyzing HD formation; among the nitrogenases tested, C. pasteurianum nitrogenase had the lowest activity for formation of HD. When contaminating N2 was removed from the atmospheres above reaction mixtures, less than 1% of the total electron flux in the system was directed to HD formation; hence, we doubt that N2-independent HD formation is significant. A working hypothesis is suggested that operates without invoking an N2-independent reaction for forming HD.

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Year:  1983        PMID： 6354256     DOI： 10.1021/bi00288a019

Source DB:  PubMed          Journal:  Biochemistry        ISSN： 0006-2960            Impact factor:   3.162


  13 in total

1.  Isolation of cyanobacterial heterocysts with high and sustained dinitrogen-fixation capacity supported by endogenous reductants.

Authors:  B B Jensen; R P Cox; R H Burris
Journal:  Arch Microbiol       Date:  1986-08       Impact factor: 2.552

Review 2.  Reduction of Substrates by Nitrogenases.

Authors:  Lance C Seefeldt; Zhi-Yong Yang; Dmitriy A Lukoyanov; Derek F Harris; Dennis R Dean; Simone Raugei; Brian M Hoffman
Journal:  Chem Rev       Date:  2020-03-16       Impact factor: 60.622

3.  Site-directed mutagenesis of the Anabaena sp. strain PCC 7120 nitrogenase active site to increase photobiological hydrogen production.

Authors:  Hajime Masukawa; Kazuhito Inoue; Hidehiro Sakurai; C Peter Wolk; Robert P Hausinger
Journal:  Appl Environ Microbiol       Date:  2010-08-13       Impact factor: 4.792

4.  Nitrogenase: a draft mechanism.

Authors:  Brian M Hoffman; Dmitriy Lukoyanov; Dennis R Dean; Lance C Seefeldt
Journal:  Acc Chem Res       Date:  2013-01-04       Impact factor: 22.384

5.  On reversible H2 loss upon N2 binding to FeMo-cofactor of nitrogenase.

Authors:  Zhi-Yong Yang; Nimesh Khadka; Dmitriy Lukoyanov; Brian M Hoffman; Dennis R Dean; Lance C Seefeldt
Journal:  Proc Natl Acad Sci U S A       Date:  2013-09-23       Impact factor: 11.205

6.  Hydrogen burst associated with nitrogenase-catalyzed reactions.

Authors:  J Liang; R H Burris
Journal:  Proc Natl Acad Sci U S A       Date:  1988-12       Impact factor: 11.205

7.  Diazene (HN=NH) is a substrate for nitrogenase: insights into the pathway of N2 reduction.

Authors:  Brett M Barney; Jammi McClead; Dmitriy Lukoyanov; Mikhail Laryukhin; Tran-Chin Yang; Dennis R Dean; Brian M Hoffman; Lance C Seefeldt
Journal:  Biochemistry       Date:  2007-05-18       Impact factor: 3.162

8.  Model of gas exchange and diffusion in legume nodules : II. Characterisation of the diffusion barrier and estimation of the concentrations of CO2, H 2 and N 2 in the infected cells.

Authors:  S Hunt; S T Gaito; D B Layzell
Journal:  Planta       Date:  1988-01       Impact factor: 4.116

9.  The mechanism of Klebsiella pneumoniae nitrogenase action. The determination of rate constants required for the simulation of the kinetics of N2 reduction and H2 evolution.

Authors:  D J Lowe; R N Thorneley
Journal:  Biochem J       Date:  1984-12-15       Impact factor: 3.857

10.  N2O reduction and HD formation by nitrogenase from a nifV mutant of Klebsiella pneumoniae.

Authors:  J Liang; R H Burris
Journal:  J Bacteriol       Date:  1989-06       Impact factor: 3.490
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