This family consists of several Mycoplasma species specific Cytadhesin P32 and P30 proteins. P30 has been found to be membrane associated and localized on the tip organelle. It is thought that it is important in cytadherence and virulence. The N-terminus contains two predicted transmembrane helices followed by a long region of a short 6 residue proline rich repeat.
Jiyao W et al.(2023). "The conserved domain database in 2023.",