Abstract
In Yersinia pestis, the Yfe and Feo systems likely function to transport ferrous iron. Both FeoA and FeoB are essential for iron acquisition activity while FeoC is not. Mutations in yfe and feo had an additive effect on microaerophilic growth under iron-chelating conditions. Y. pestis cells lacking the Ybt siderophore-dependent system, the Yfe or the Feo system grow normally in J774A.1 cells. However, a double yfeAB feoB mutant was no longer able to grow in this murine macrophage cell line. This growth defect likely resulted from iron and not manganese deprivation since a yfeAB mntH mutant grew normally in J774A.1 cells. These results suggest that the Yfe and Feo systems are somewhat redundant ferrous iron transporters capable of iron acquisition during intracellular growth of the plague bacterium.
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This project was supported by Public Health Service grant AI033481 from the U.S. National Institutes of Health.
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Perry, R.D., Mier, I. & Fetherston, J.D. Roles of the Yfe and Feo transporters of Yersinia pestis in iron uptake and intracellular growth . Biometals 20, 699–703 (2007). https://doi.org/10.1007/s10534-006-9051-x
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DOI: https://doi.org/10.1007/s10534-006-9051-x