Table 1.

Kinetic constants of S9Cdr

Tripeptides	Kma	kcata	kcat/Kma
	mm	s−1	m−1 s−1
Met-Leu-Ser	1.0 ± 0.2	(4.1 ± 0.3) × 101	(4.1 ± 0.9) × 104
Leu-Ala-Ser	2.6 ± 0.5	(7.7 ± 0.7) × 101	(3.0 ± 0.6) × 104
Met-Ala-Ala	6.0 ± 1.7	(1.4 ± 0.3) × 102	(2.3 ± 0.1) × 104

^a Enzyme assay was performed in 50 mm Tris-Cl, pH 8.0, at 37 °C at various substrate concentrations. Data at each concentration are from assays performed in triplicate. Kinetic constants were determined by linear regression (Michaelis–Menten) curve fitting using Graph Pad Prism (version 6.0). Errors (S.D.) reported are those from curve fitting.