Effects of limited aeration and of the ArcAB system on intermediary pyruvate catabolism in Escherichia coli

Results show that in the process of catabolic adaptation to redox conditions Escherichia coli uses the pyruvate formate-lyase and the pyruvate dehydrogenase complex under microaerobic conditions. Data indicate that the global regulatory system ArcAB controls the above two operons during microaerobiosis.