Table 1.

Time constants of exponential components used to reproduce the transient absorption signals of wild-type NpHR and the T218V mutant

	k0−1/ns	k1−1/ns	k2−1/μs	k3−1/μs	k4−1/ms	k5−1/ms	k6−1/ms	k7−1/ms
WT 300 mM chloride	N	550 ± 80	290 ± 80	560 ± 60	1.4 ± 0.1	17 ± 5	370 ± 30	N
WT 4 M chloride	120 ± 30	600 ± 180	200 ± 40	500 ± 300	1.0 ± 0.2	3.7 ± 0.7	100 ± 80	120 ± 90
T218V 300 mM chloride	N	640 ± 110	41 ± 25	620 ± 40	1.25 ± 0.05	5.23 ± 0.05	31 ± 5	88 ± 9

N, not observed; WT, wild-type.