CATH Classification

Domain Context

CATH Clusters

Superfamily 3.40.50.2300
Functional Family PTS system fructose-like transporter subunit IIB

Enzyme Information

2.7.1.191
Protein-N(pi)-phosphohistidine--D-mannose phosphotransferase.
based on mapping to UniProt O31645
[Protein]-N(pi)-phospho-L-histidine + D-mannose(Side 1) = [protein]-L- histidine + D-mannose 6-phosphate(Side 2).
-!- This enzyme is a component (known as enzyme II) of a phosphoenolpyruvate (PEP)-dependent, sugar transporting phosphotransferase system (PTS). -!- The system, which is found only in prokaryotes, simultaneously transports its substrate from the periplasm or extracellular space into the cytoplasm and phosphorylates it. -!- The phosphate donor, which is shared among the different systems, is a phospho-carrier protein of low molecular mass that has been phosphorylated by EC 2.7.3.9. -!- Enzyme II, on the other hand, is specific for a particular substrate, although in some cases alternative substrates can be transported with lower efficiency. -!- The reaction involves a successive transfer of the phosphate group to several amino acids within the enzyme before the final transfer to the substrate. -!- Formerly EC 2.7.1.69.

UniProtKB Entries (1)

O31645
PTN3B_BACSU
Bacillus subtilis subsp. subtilis str. 168
PTS system mannose-specific EIIBCA component

PDB Structure

PDB 2R48
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structure of the fructose specific IIB subunit of PTS system from Bacillus subtilis subsp. subtilis str. 168.
Nocek, B., Cuff, M., Sather, A., Clancy, S., Joachimiak, A.
To be Published
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