TABLE 1.

The time constants of the transitions and the electrogenicities of the photocycle intermediates of the proteorhodopsin, measured at 20°C

Intermediate or transition	Forward reaction	Back-reaction	Relative electrogenicity
K			−0.0017
K to M1	43 ms	14 ms
M1			−0.0085
M1 to M2	222 ms	–
M2			−0.0073
M2 to N	0.53 ms	1.9 ms
N			0.24
N to PR′	18.8 ms	119 ms
PR′(O)			0.7
PR′ to PR	153 ms	–
PR			1