]> 2026-07-31T10:04:39+00:00 WBR0907 0 en Aldose reductase Aldose reductase catalyzes the conversion of galactose into galacticol and glucose to sorbitol. Galactokinase Galactokinase catalyzes the conversion of galactose to galactose-1-phosphate. The enzyme is deficient in this patient, but it is not directly involved in the synthesis of lactose. Galactose-1-phosphate uridyltransferase Galactose-1-phosphate uridyltransferase (GALT) catalyzes the reversible conversion of galactose-1-phosphate into UDP-galactose. This enzyme is deficient in patients with classic galactosemia. UDP-galactose-4-epimerase UDP-galactose-4-epimerase (GALE), also known as UDP-glucose-4-epimerase, catalyzes the reversible conversion of UDP-galactose to UDP-glucose. In the absence of an exogenous source of galactose, GALE catalyzes the formation of UDP-galactose necessary for the synthesis of lactose. UDP-glucose-pyrophosphorylase UDP-glucose-pyrophosphorylase catalyzes the conversion of UDP-glucose to glucose-1-phosphate. The enzyme is not directly involved in the synthesis of lactose. Biochemistry A pregnant woman known to have classic galactokinase deficiency is worried she will not be able to breastfeed her baby because she has been on a strict galactose free diet since her birth. The physician comforts her and tells her that she will be having normal breast milk for lactation. The ability of the mammary glands to synthesize milk in the absence of dietary galactose in this patient is due to the activity of which of the following enzymes? D General Principles 2020-10-28T02:02:42Z 2459150.5852083 WBR0907