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. 1970 Oct;104(1):219-26.
doi: 10.1128/jb.104.1.219-226.1970.

Mutations affecting iron transport in Escherichia coli

G B Cox, F Gibson, R K Luke, N A Newton, I G O'Brien, H Rosenberg

Mutations affecting iron transport in Escherichia coli

G B Cox et al. J Bacteriol. 1970 Oct.

Abstract

A mutant of Escherichia coli K-12 unable to form an essential component of the enterochelin-dependent iron transport system has been isolated. This strain carries a mutation in a gene designated fep, mapping close to two genes, entA and entD, concerned with enterochelin synthesis. Strain AN102, which carries the fep(-) allele, accumulates large quantities of enterochelin and gives a growth response to sodium citrate. The cytochrome b(1) and total iron content, and the measurement of the uptake of (55)Fe(3+), indicate an impairment of the enterochelin-dependent iron transport system. The growth response to sodium citrate is related to the presence, in strain AN102, of an inducible citrate-dependent iron transport system.

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References

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