The bacterial phosphoenolpyruvate: sugar phosphotransferase system (PTS) is a multi-protein system involved in the regulation of a variety of metabolic and transcriptional processes. The sugar-specific permease of the PTS consists of three domains (IIA, IIB and IIC). The IIC domain catalyses the transfer of a phosphoryl group from IIB to the sugar substrate.

1: Novel phosphotransferase system genes revealed by bacterial genome analysis: the complete complement of pts genes in mycoplasma genitalium. Reizer J, Paulsen IT, Reizer A, Titgemeyer F, Saier MH Jr; Microb Comp Genomics 1996;1:151-164. PMID:9689210