alpha-Glucosidase from Saccharomyces cerevisiae, Type I, lyophilized powder, >=10 units/mg protein (using p-nitrophenyl alpha-D-glucoside as substrate.)

Glucose-6-phosphate Dehydrogenase from Leuconostoc mesenteroides, Type XXIII, ammonium sulfate suspension, 550-1,100 units/mg protein (biuret), >=2.0 mg/mL Biuret

Acetylcholinesterase from Electrophorus electricus (electric eel), Type V-S, lyophilized powder, >=1,000 units/mg protein

Citrate Synthase from porcine heart, ammonium sulfate suspension, >=100 units/mg protein

Creatine Phosphokinase from bovine heart, Type III, salt-free, lyophilized powder, >=30 units/mg protein

Glyceraldehyde-3-phosphate Dehydrogenase from rabbit muscle, lyophilized powder, >=75 units/mg protein

beta-Galactosidase from Escherichia coli, Grade VIII, lyophilized powder, >=500 units/mg protein

Peroxidase from horseradish, Type VI, essentially salt-free, lyophilized powder, >=250 units/mg solid (using pyrogallol)

L-Lactic Dehydrogenase from rabbit muscle, Type XI, lyophilized powder, 600-1,200 units/mg protein

Penicillinase from Bacillus cereus, lyophilized powder, 1,500-3,000 units/mg protein (using benzylpenicillin)

Pyruvate Kinase from rabbit muscle, Type III, lyophilized powder, 350-600 units/mg protein

TEV Protease