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N 2 + 16MgATP 2- + 8e - + 8H + → 2NH 3 + 16MgADP - + 16H 2 PO 4 - + H 2 PowerPoint Presentation
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N 2 + 16MgATP 2- + 8e - + 8H + → 2NH 3 + 16MgADP - + 16H 2 PO 4 - + H 2. Complex of the nitrogenase proteins stabilized by ADP-AIF4−. Howard J. B., Rees D. C. PNAS 2006;103:17088-17093. ©2006 by National Academy of Sciences.

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slide1

N2+ 16MgATP2- + 8e- + 8H+ →

2NH3 + 16MgADP- + 16H2PO4- + H2

slide2

Complex of the nitrogenase proteins stabilized by ADP-AIF4−

Howard J. B., Rees D. C. PNAS 2006;103:17088-17093

©2006 by National Academy of Sciences

slide3

Ball-and-stick representation of the nitrogenase metalloclusters

Howard J. B., Rees D. C. PNAS 2006;103:17088-17093

©2006 by National Academy of Sciences

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A view of the FeMo cofactor highlighting Fe atoms 2, 3, 6, and 7 (numbering from Protein Data Bank ID code 1M1N), along with MoFe protein amino acids ligands (α-275Cys and α-442His) and the side chains of α-195His and α-70Val

Barney B. M. et.al. PNAS 2006;103:17113-17118

©2006 by National Academy of Sciences

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How many metals does it take to fix N2? A mechanistic overview of biological nitrogen fixation

James B. Howard*† and Douglas C. Rees†‡

*Department of Biochemistry, University of Minnesota, Minneapolis, MN 55455; and

‡Division of Chemistry and Chemical Engineering, 114-96, Howard Hughes Medical Institute, California Institute of Technology, Pasadena, CA 91125

Proc Natl Acad Sci U S A. 2006 November 14; 103(46): 17088–17093.

http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1859894

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Science, 331, 1049