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Abstract. Regulation of transcription of the Escherichia coli moe operon, which codes for proteins connecting molybdate metabolism, molybdopterin synthesis, and apomolybdoenzyme synthesis, was investigated. Expression of the moe operon was independent of genes coding for molybdate transport and Mo-cofactor biosynthesis. Expression of moeA-lacZ increased during anaerobic growth (2.5-fold over the aerobic...
Nitrate and nitrite reduction are of paramount importance for nitrogen assimilation and anaerobic metabolism, and understanding the specific roles of each participating reductase is necessary to describe the biochemical balance that dictates cellular responses to their environments. The soluble, cytoplasmic siroheme NADH-nitrite reductase (Nir) in Escherichia coli is necessary for nitrate/nitrite...
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