Permease of phosphotransferase system
Permease of phosphotransferase system (or PTS-AG superfamily according to TCDB) is a superfamily of phosphotransferase enzymes that facilitate the transport of L-ascorbate (A) and galactitol (G). Classification has been established through phylogenic analysis and bioinformatics.
| Phosphotransferase permease | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| Symbol | PTS | ||||||||
| Pfam | PF03611 | ||||||||
| InterPro | IPR004703 | ||||||||
| TCDB | 4.A.7 | ||||||||
| OPM superfamily | 426 | ||||||||
| OPM protein | 5zov | ||||||||
| |||||||||
The bacterial phosphoenolpyruvate:sugar phosphotransferase system (PTS) transports and phosphorylates its sugar substrates in a single energy-coupled step. This transport process is dependent on several cytoplasmic phosphoryl transfer proteins - Enzyme I (I), HPr, Enzyme IIA (IIA), and Enzyme IIB (IIB)) as well as the integral membrane sugar permease (IIC). The PTS Enzyme II complexes are derived from independently evolving 4 PTS Enzyme II complex superfamilies, that include the (1) Glucose (Glc),(2) Mannose (Man), (3) Ascorbate-Galactitol (Asc-Gat) and (4) Dihydroxyacetone (Dha) superfamilies.
The four families that make up the PTS-GFL superfamily include: