However, while the spiralin in the spiroplasma is a membrane lipoprotein, the spiralin expressed in the acholeplasma did not undergo postranslational modification by fatty acids, remaining as a soluble protein in the cytoplasm (205).The M. mycoides subsp. mycoides plasmids pADP201 and pKMK1 are the only characterized plasmids known in the genus Mycoplasma (114).