- Galactose-1-phosphate Uridyltransferase, from galactose-adapted yeast,Type IV, lyophilized powder, 20-60 units/mg protein (modified Warburg-Christian), 20U
- α-Ketoglutarate Dehydrogenase, from porcine heart,buffered aqueous glycerol solution, 0.1-1.0 units/mg protein (Lowry), 20U
- Pyruvate Decarboxylase from baker’s yeast (S. cerevisiae),ammonium sulfate suspension, 5.0-20.0 units/mg protein (biuret), 20U
- Uridine-5′-diphosphoglucose pyrophosphorylase, from baker’s yeast,Type X, lyophilized powder, ≥40 units/mg protein, 25U