Rxn catalysed by: (26-30)

Question 1

Glucokinase

Answer 1

phosphorylation of glucose to glucose-6-phosphate. Isoform of hexokinase
(glucose metabolism in liver)

*topic 34 (also first step of purine nucleotide synthesis)

Question 2

Glucose-6-phosphatase

Answer 2

from glucose-6-P to glucose in gluconeogenesis

Question 3

Glucose-6-isomerase

Answer 3

Also called phosphoglucose isomerase. Catalyze conversion of glucose-6-phosphate to fructose-6-phosphate (in gluconeogenesis)

Question 4

Galactokinase

Answer 4

Phosphorylation of Galactose to Galactose-1-phosphate

Question 5

γ-glutamyltransferase (GGT)

Answer 5

catalyses the transfer of a γ-glutamyl group from glutathione or other γ-glutamyl peptides to amino acids (AA) or peptides forming γ-glutamyl- amino acid or γ-glutamyl-peptide and cysteinylglycine