What is "phosphotransferase"

n. (context enzyme English) Any enzyme that catalyzes the transfer of a phosphate group (phosphorylation)

Phosphotransferases are a category of enzymes ( EC number 2.7) that catalyze phosphorylation reactions. The general form of the reactions they catalyze is:

A-P + B $\rightleftharpoons$ B-P + A

Where P is a phosphate group and A and B are the donating and accepting molecules, respectively.