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. This system is involved in N-acetylglucosamine (GlcNAc) transport (PubMed:16925557, PubMed:20487300). High-affinity permease, which exhibits a narrow specificity for GlcNAc (PubMed:20487300). Essential for C-signaling between vegetative growth and development (PubMed:20487300). Induced by GlcNAc (PubMed:20487300). Transcriptionally activated by AtrA (PubMed:20487300). Expression is repressed by DasR in the absence of glucosamine 6-P (GlcN6P) (PubMed:16925557). The EIIC domain type-1 forms the PTS system translocation channel and contains the specific substrate-binding site. Mutant is unable to grow on GlcNAc, while growth on glucose, fructose, xylose, mannose, sucrose or galactose is not impaired (PubMed:20487300). Mutant is insensitive to GlcNAc (PubMed:16925557, PubMed:20487300).