The phosphoenolpyruvate-dependent sugar phosphotransferase system (PTS), a major carbohydrate active transport system, catalyzes the phosphorylation of incoming sugar substrates concomitant with their translocation across the cell membrane (By similarity). Involved in galactose transport with PtcA and PtcB (PubMed:30123211). The EIIC type-3 domain forms the PTS system translocation channel and contains the specific substrate-binding site. The galP/llmg_0963 double mutant grows poorly on galactose.