Aerobic regulation of the Escherichia coli tonB gene by changes in iron availability and the fur locus.

Abstract excerpt

The tonB gene is required for the transport of several different iron-siderophore complexes across the Escherichia coli outer membrane. In this study, transcriptional regulation of the tonB gene was investigated by using three different tonB-lacZ fusions to monitor tonB expression under aerobic conditions and in the presence of a wild-type tonB gene. Prior work by other laboratories suggests that tonB is...

Topics

• Aerobiosis
• Bacteriophage lambda
• Base Sequence
• Chromosome Mapping
• Escherichia coli
• Gene Expression Regulation, Bacterial
• Genes, Bacterial
• Iron
• Molecular Sequence Data
• Mutation
• Plasmids