Tags: Enzyme.
Choline Kinase (also known as CKChoK and Choline Phosphokinase) is an enzyme which catalyzes the first reaction in the choline pathway for phosphatidylcholine (PC) biosynthesis.This reaction involves the transfer of a phosphate group from ATP to choline in order to form phosphocholine.ATP + choline ADP + O-phosphocholineThus the two substrates of this enzyme are ATP and choline whereas its two products are ADP and O-phosphocholine.Choline Kinase requires magnesium ions (+2) as a cofactor for this reaction.