Table 1.

Hydratase Activity Measurements of AUH and Crotonase with HMG-CoA and Butenoyl-CoA (C4:1-CoA) as Substrate

Hydratase Activity	MBP-AUH(nmol/min/mg)	Bovine LiverCrotonase(nmol/min/mg)
HMG-CoA	110	<1
C4:1-CoA	4.8	8.3 ×105
Ratio HMG-CoA/C4:1-CoA	23	<10−6