P40 and P90 from Mpn142 are Targets of Multiple Processing Events on the Surface of .

is a significant cause of community acquired pneumonia globally. Despite having a genome less than 1 Mb in size, presents a structurally sophisticated attachment organelle that (i) provides cell polarity, (ii) directs adherence to receptors presented on respiratory epithelium, and (iii) plays a major role in cell motility. The major adhesins, P1 () and P30 (), are localised to the tip of the attachment organelle by the surface accessible cleavage fragments P90 and P40 derived from Mpn142.