Enzyme
Turnover number (per second)
Carbonic anhydrase
600,000
3-Ketosteroid isomerase
280,000
Acetylcholinesterase
25,000
Penicillinase
2,000
Lactate dehydrogenase
1,000
Chymotrypsin
100
DNA polymerase I
15
Tryptophan synthetase
2
Lysozyme
0.5