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Escherichia Coli
Researchers at Seoul National University publish new data on Escherichia coli
April 29th, 2008
According to a study from Seoul, South Korea, "Escherichia coli synthesize C-type cytochromes only during anaerobic growth in media supplemented with nitrate and nitrite. The reduction of nitrate to ammonium in the periplasm of Escherichia coli involves two separate periplasmic enzymes, nitrate reductase and nitrite reductase." "The nitrite reductase involved, Nr/A, contains cytochrome C and is synthesized coordinately with a membrane-associated cytochrome C, NrfB, during growth in the presence of nitrite or in limiting nitrate concentrations. The genes NrfE, NrfF, and NrfG are required for the formate-dependent nitrite reduction pathway, which involves at least two...
Source: TB & Outbreaks Week (2008-04-29)
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