Table 1. Kinetic parameters for the three-step reaction involving MCR_red1 radical formation.

	$A\stackrel{k_1}{\to }B$			$B\stackrel{k_2}{\to }C$	$C\stackrel{k_3}{\to }D$
	k1 (s−1)	Km1 (mM)	k1/Km1 (M−1s−1)	k2 (s−1)	k3 (s−1)
CoB6SH (with 5 mM BES)	75 ± 6	1.7 ± 0.3	45000 ± 9000	2.6 ± 0.3	1.0 ± 0.1
BES (in presence of 1 mM CoB6SH)	38 ± 1	0.7 ± 0.1	51500 ± 9900	2.8 ± 0.5	1.1 ± 0.1