Function
In more general terms, phosphorylases are enzymes that catalyze the addition of a phosphate group from an inorganic phosphate (phosphate+hydrogen) to an acceptor, not to be confused with a phosphatase (a hydrolase) or a kinase (a phosphotransferase). A phosphatase removes a phosphonate group from a donor using water, whereas a kinase transfers a phosphonate group from a donor (usually ATP) to an acceptor.
| Enzyme name | Enzymes class | Reaction | Notes |
|---|---|---|---|
| Phosphorylase | Transferase (EC 2.4 and EC 2.7.7) |
A-B + H-OP A-OP + H-B | transfer group = A = glycosyl- group or nucleotidyl- group |
| Phosphatase | Hydrolase (EC 3) |
P-B + H-OH P-OH + H-B | |
| Kinase | Transferase (EC 2.7.1-2.7.4) |
P-B + H-A P-A + H-B | transfer group = P |
| P = phosphonate group, OP = phosphate group, H-OP or P-OH = inorganic phosphate | |||
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