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Pronunciation: ga-lak'to-ki'nas

Definition: An enzyme (a phosphotransferase) that, in the presence of ATP, catalyzes the phosphorylation of d-galactose to d-galactose-1-phosphate, the first step in the metabolism of d-galactose; galactokinase is deficient in one form of galactosemia.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.