Your body produces the enzyme creatine kinase (CK) or creatine phosphokinase to keep your muscles functioning properly. Healthcare providers use the CK test to check levels of this protein in your ...

Kinases are enzymes that catalyze the addition of a phosphate group (PO43−) to substrates, usually proteins. The phosphate generally comes from adenosine triphosphate (ATP). Kinases and ...

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