PMID: 1551829
| Citation |
Adler, H, Mural, R and Suttle, B (1992) Oxygen sensitivity of an Escherichia coli mutant. J. Bacteriol. 174:2072-7 |
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| Abstract |
Genetic evidence indicates that Oxys-6, an oxygen-sensitive mutant of Escherichia coli AB1157, is defective in the region of the hemB locus. Oxys-6 is capable of growth under aerobic conditions only if cultures are initiated at low-inoculum levels. Aerobic liquid cultures are limited to a cell density of 10(7) cells per ml by the accumulation of a metabolically produced, low-molecular-weight, heat-stable material in complex organic media. Both Oxys-6 and AB1157 cells produce the material, but only aerobic cultures of the mutant are inhibited by it. The material is produced by both intact cells and cell extracts in complex media. This reaction also occurs when the amino acid L-lysine is substituted for complex media. |
| Links | |
| Keywords |
Cloning, Molecular; DNA Mutational Analysis; DNA, Bacterial/genetics; Escherichia coli/genetics; Escherichia coli/metabolism; Genes, Bacterial; Lysine/metabolism; Mutation; Oxygen/toxicity; Restriction Mapping |
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