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. 1983 Sep;155(3):1439–1442. doi: 10.1128/jb.155.3.1439-1442.1983

Initial characterization of the ferric iron transport system of Corynebacterium diphtheriae.

L M Russell, R K Holmes
PMCID: PMC217846  PMID: 6411692

Abstract

Transport of ferric iron into Corynebacterium diphtheriae C7(beta) was shown to occur by a high-affinity, active transport system. Optimal rates were at pH 6.8 and 40 degrees C. Strong inhibition of uptake by carbonyl cyanide m-chlorophenylhydrazone was consistent with the electrochemical proton gradient as the major energy source for iron transport, and inhibition by Hg2+ indicated that sulfhydryl groups were also important. Evidence was obtained for stimulation of iron uptake at pH 8.0 by a dialyzable, extracellular factor present in conditioned medium from low-iron cultures of C. diphtheriae.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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