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Iron Transport in Escherichia coli: Roles of Energy-dependent Uptake and 2,3-Dihydroxybenzoylserine
1969
Journal of Bacteriology
Escherichia coli strains B/r and 2276 contain an active transport system for iron. The system is energy-dependent, repressed by excess iron in the growth medium, and capable of accumulating iron inside of the cells at concentrations 2,000-fold higher than those in the medium. Two tonB-trp deletion mutants, strains B/rlt and B/1t7, which are sensitive to chromic ion and require high levels of iron for normal growth, are deficient in this active transport system. A point mutant, strain Chr2,
doi:10.1128/jb.98.3.1142-1150.1969
fatcat:ri3ksij4zfcfpiruwzrfyhvjfq