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Bacterial proteins similar to Porphyromonas gingivalis HmuY and the C-terminal domain of PARMER_03218 HmuY is a hemophore that scavenges heme from infected hosts and delivers it to the outer membrane receptor HmuR. Related but uncharacterized proteins do not appear to share the specific heme-binding site. The C-terminal domain of PARMER_03128, an uncharacterized protein from Parabacteroides merdae, plus related proteins from Bacteroidetes, appear to be a distantly related family and have been included in this model.
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