galactokinase /ga·lac·to·ki·nase/ (gah-lak″to-ki´nās) an enzyme that catalyzes the transfer of a high-energy phosphate group from a donor to d-galactose, the initial step of galactose utilization. Absence of enzyme activity results in galactokinase deficiency galactosemia.
galactokinase
galactokinase [gah-lak″to-ki´nās]
ga·lac·to·ki·nase (g -l k t -k  n s, -nz, -k ns, -z)n. An enzyme that catalyzes the phosphorylation of galactose in the presence of ATP. |
galactokinase
[gəlak′tōkī′nās]
Etymology: Gk, gala, milk, kinesis, movement; Fr, diastase, enzyme
an enzyme that functions in the metabolism of glycogen. Galactokinase catalyzes a metabolic step involving the transfer of a high-energy phosphate group from a donor molecule to a molecule of galactose, producing a molecule of d-galactose 1-phosphate.
galactokinase [gah-lak″to-ki´nās]
an enzyme that catalyzes the first step in the metabolism of galactose, the transfer of a phosphate group from ATP to galactose, producing galactose-1-phosphate.
galactokinase deficiency a rare type of galactosemia transmitted as an autosomal recessive trait, caused by a deficiency of galactokinase. The only clinical manifestation is the development of cataracts during the first year of life, which can be prevented by a low-galactose diet.
galactokinase
an enzyme that catalyzes the first step in the metabolism of galactose, the transfer of a phosphate group from ATP to galactose, producing galactose-1-phosphate.
galactokinase deficiency
see galactosemia.
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