TABLE 2.

Thermodynamic parameters for binding substrate analogs by PpPDO2

	Kd	ΔH	ΔS
	μm	kcal mol−1	cal mol−1 K−1
GSH	1.6 ± 0.6	−0.31 ± 0.01	25.5
GSSO3−	12 ± 3	−2.2 ± 0.2	15.1
GSSCH3	NDa	ND	ND

^a ND, not determined.