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Related to creatine phosphokinase: troponin
cre·a·tine ki·nase (CK),
an enzyme catalyzing the reversible transfer of phosphate from phosphocreatine to ADP, forming creatine and ATP; of importance in muscle contraction. Certain isozymes are elevated in plasma following myocardial infarctions.
Synonym(s): creatine phosphokinase
See creatine kinase.
a nonprotein nitrogen substance synthesized in the body from three amino acids: arginine, glycine (aminoacetic acid) and methionine. Creatine readily combines with phosphate to form phosphocreatine, or creatine phosphate, which is present in muscle, where it serves as the storage form of high-energy phosphate necessary for intense muscle contraction.
creatine kinase (CK)
an organ-specific enzyme catalyzing the transfer of a phosphate group from phosphocreatine to ATP. It has three isoenzymes: CK1, found primarily in the brain; CK2, found in the myocardium; and CK3, found in both skeletal muscle and the myocardium. In humans, the presence of CK2 in the blood is useful in diagnosing a recent myocardial infarction, but in animals CK3 is most commonly increased related to muscle damage. Called also creatine phosphokinase, Lohmann's enzyme.
see creatine (above).
called also CPK; see creatine kinase (above).