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Recent mechanistic developments for cytochrome c nitrite reductase, the key enzyme in the dissimilatory nitrate reduction to ammonium pathway

Journal Article · · Journal of Inorganic Biochemistry

Cytochrome c nitrite reductase, NrfA, is a soluble, periplasmic pentaheme cytochrome responsible for the reduction of nitrite to ammonium in the Dissimilatory Nitrate Reduction to Ammonium (DNRA) pathway, a vital reaction in the global nitrogen cycle. NrfA catalyzes this six-electron and eight-proton reduction of nitrite at a single active site with the help of its quinol oxidase partners. In this study, we summarize the latest progress in elucidating the reaction mechanism of ammonia production, including new findings about the active site architecture of NrfA, as well as recent results that elucidate electron transfer and storage in the pentaheme scaffold of this enzyme.

Research Organization:
Michigan State University, East Lansing, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation Graduate Research Fellowship Program
Grant/Contract Number:
SC0017952; SC0018173
OSTI ID:
2339604
Alternate ID(s):
OSTI ID: 2337747
Journal Information:
Journal of Inorganic Biochemistry, Journal Name: Journal of Inorganic Biochemistry Vol. 256; ISSN 0162-0134
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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