Table 2.

Observed rate constants used to fit experimental data shown in Fig. 4 B–E to the cluster disassembly model shown in Fig. 4A

Reaction step	Observed rate constant (min−1)*	Reaction
k1	0.020 ± 5 × 10−5	[4Fe-4S] → [3Fe-4S]
k2	0.123 ± 0.002	[3Fe-4S] → [3Fe-3S]
k3	0.072 ± 0.001	[3Fe-3S] → [2Fe-2S]
k4	0.200 ± 0.003	[2Fe-2S] → apo
k5	0.200 ± 0.003	[3Fe-4S] → [2Fe-4S]
k6	0.145 ± 0.003	[2Fe-4S] → apo(S0)n
k7	0.040 ± 0.001	[3Fe-3S] → [2Fe-3S]
k8	0.210 ± 0.006	[2Fe-3S] → apo(S0)n
k9	0.330 ± 0.008	apo → apo(S0)n

^*SEs are indicated.