This family consists of several Mycoplasma species specific Cytadhesin P32 and P30 proteins. P30 has been found to be membrane associated and localised on the tip organelle. It is thought that it is important in cytadherence and virulence [1]. The N-terminus contains two predicted transmembrane helices followed by a long region of a short 6 residue proline rich repeat.

1: Characterization of MGC2, a Mycoplasma gallisepticum cytadhesin with homology to the Mycoplasma pneumoniae 30-kilodalton protein P30 and Mycoplasma genitalium P32. Hnatow LL, Keeler CL Jr, Tessmer LL, Czymmek K, Dohms JE; Infect Immun 1998;66:3436-3442. PMID:9632619