Essential Biochemistry - Carbohydrate Metabolism (Section 7 - No. 24)

Which enzyme deficiency causes Galactosemia?
Hexokinase
Galactokinase
Glucose-6-phosphatase
UDP-galactose-4-epimerase

Explanation

Galactosemia is primarily caused by a deficiency of UDP-galactose-4-epimerase, galactokinase or, less commonly, by a deficiency in galactose-1-phosphate uridyltransferase.

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