Tags: Enzyme.
In enzymology a hydroxylysine kinase (EC 2.7.1.81) is an enzyme that catalyzes the chemical reactionGTP + 5-hydroxy-L-lysine GDP + 5-phosphonooxy-L-lysineThus the two substrates of this enzyme are GTP and 5-hydroxy-L-lysine whereas its two products are GDP and 5-phosphonooxy-L-lysine.This enzyme belongs to the family of transferases specifically those transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor.