TABLE 2.

Thermodynamic parameters estimated of the recovery of the original pigment in TR, HwBR, and AR3*

Values for ΔH^‡o, ΔG^‡o, and TΔS^‡o were evaluated at 300 K.

Retinal proteins	Ea	ΔH‡o	ΔG‡o	TΔS‡o
	kcal/mol	kcal/mol	kcal/mol	kcal/mol
TR	12.6	12.0	15.9	−3.95
HwBR	8.69	8.09	15.5	−7.41
AR3	9.40	8.81	13.9	−5.05
GR	9.10	8.50	15.0	−6.51