Volume 6 Issue 6, June 1999

Volume 6 Issue 6

The pathogenic bacterium Serratia marcescens secretes a hemophore called HasA (shown here) to obtain essential iron from its vertebrate hosts. HasA picks up heme (shown in white) that is either free or bound to hemoglobin and shuttles it to a bacterial receptor, which then transfers the heme into the bacterium. See pages 516–520.

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