Phosphotransferases are a category of enzymes (EC number 2.7) that catalyze phosphorylation reactions. The general form of the reactions they catalyze is: Where P is a phosphate group and A and B are the donating and accepting molecules, respectively. ==Classification of Phosphotransferases== Phosphotransferases are generally classified according ...
<enzyme> An enzyme ... (18 Nov 1997) ... 
(fos″fo-trans´fәr-ās) any of a class of enzymes that catalyze the transfer of a phosphate group.
An enzyme that transfers a phosphate group from a donor to an acceptor. Very important in metabolism.