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2.7.1.204: protein-Npi-phosphohistidine-D-galactose phosphotransferase

This is an abbreviated version!
For detailed information about protein-Npi-phosphohistidine-D-galactose phosphotransferase, go to the full flat file.

Reaction

[protein]-Npi-phospho-L-histidine
+
D-galactose[side 1]
=
[protein]-L-histidine
+
D-galactose 6-phosphate[side 2]

Synonyms

D-galactose PTS permease, EC 2.7.1.69, EIIGal, phosphotransferase system permease specific for galactose

ECTree

     2 Transferases
         2.7 Transferring phosphorus-containing groups
             2.7.1 Phosphotransferases with an alcohol group as acceptor
                2.7.1.204 protein-Npi-phosphohistidine-D-galactose phosphotransferase

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Resultsin table
3AA Sequence
1Expression
3Localization
3Natural Substrates/ Products (Substrates)
20Organism
1Reaction
3Reference
3Substrates and Products (Substrate)
9Synonyms
1Systematic Name

Systematic Name

Systematic Name on EC 2.7.1.204 - protein-Npi-phosphohistidine-D-galactose phosphotransferase

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SYSTEMATIC NAME
IUBMB Comments
protein-Npi-phospho-L-histidine:D-galactose Npi-phosphotransferase
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 (phosphoenolpyruvate---protein phosphotransferase). 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.