Table 2.

Summary of kinetic assays

	T-Cc	S-Cc	hh-Cc
Reducing activity, K, sec−1 × 10−3	2.3	0.7	0.9
Degradation constant, KD, sec−1 × 10−4	10.29	13.67	18.26
Half life of bleaching, T1/2, sec	604	410	300
Ascorbate reduction, KR, sec−1 × 10−4	16.08	55.53	35.92

K and K_D were calculated as described in the text. T_1/2 was measured directly from the curve in Fig. 2B. The linear regions of Fig. 2C (1-20 μM) yield the apparent first-order reduction constant, K_R.