Table 1. Kinetic parameters of rL-PAF-AH, human serum and the specific activity of Y195H rL-PAF-AH.

Enzyme	Km (mM)	kcat (s−1)	kcat/Km (mM−1 s−1)	Specific activity (IU/mg)
rL-PAF-AH	0.61	6.61	10.84	13.91
Human serum	0.27
Y195H rL-PAF-AH				12.79

All values represented means of results from duplicate experiments.