These proteins include those ascribed to M penetrans paralogue family 26 in [1]. This family contains a region of transmembrane helices.

1: The complete genomic sequence of Mycoplasma penetrans, an intracellular bacterial pathogen in humans. Sasaki Y, Ishikawa J, Yamashita A, Oshima K, Kenri T, Furuya K, Yoshino C, Horino A, Shiba T, Sasaki T, Hattori M; Nucleic Acids Res 2002;30:5293-5300. PMID:12466555