Abstract

We tested the in vitro binding of human iron-sequestering lactoferrin and transferrin by the mucosal-surface pathogens, Mycoplasma pneumoniae and Mycoplasma genitalium. Mycoplasma pneumoniae bound lactoferrin, but not transferrin, in a saturable and specific manner. Analysis of binding data indicates less than 10000 lactoferrin receptors per micro-organism with a moderately high binding affinity of 20 n m. No significant binding of lactoferrin or transferrin by M. genitalium was observed.

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