Article
A new type of hemophore-dependent heme acquisition system of Serratia marcescens reconstituted in Escherichia coli.
Journal of bacteriology - 1 Jun 1997
Ghigo J M, Létoffé S, Wandersman C
Abstract excerpt
The utilization by Serratia marcescens of heme bound to hemoglobin requires HasA, an extracellular heme-binding protein. This unique heme acquisition system was studied in an Escherichia coli hemA mutant that was a heme auxotroph. We identified a 92-kDa iron-regulated S. marcescens outer membrane protein, HasR, which alone enabled the E. coli hemA mutant to grow on heme or hemoglobin as a porphyrin source. The...
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