Abstract
In this work we report the first spectroscopic evidence demonstrating that cbb3 oxidase catalyzes the reduction of nitrite to nitrous oxide under reducing anaerobic conditions. The reaction proceeds through the formation of a ferrous six-coordinate heme b3-nitrosyl species that has been characterized by resonance Raman spectroscopy.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Copper / chemistry
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Cysteine / chemistry
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Electron Transport Complex IV / chemistry*
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Heme / chemistry*
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Iron / chemistry
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Nitric Oxide / chemistry*
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Nitrites / chemistry*
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Nitrous Oxide / chemistry*
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Oxidation-Reduction
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Pseudomonas stutzeri / enzymology
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Spectroscopy, Fourier Transform Infrared
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Spectrum Analysis, Raman
Substances
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Nitrites
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Nitric Oxide
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Heme
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Copper
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Iron
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cbb3 oxidase
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Electron Transport Complex IV
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Nitrous Oxide
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Cysteine