Function
The phosphoenolpyruvate-dependent sugar phosphotransferase system (sugar PTS), a major carbohydrate active transport system, catalyzes the phosphorylation of incoming sugar substrates concomitantly with their translocation across the cell membrane. The enzyme II LacEF PTS system is involved in lactose transport, but can also use galactose, isopropyl beta-thio-galactopyranoside and thiometyl beta-D-galactopyranoside (TMG) as substrates.