Finally , bacteriorhodopsin returns to its resting state when Asp85 releases its proton to Glu204 .
The protonation of Asp85 and Asp96 causing re-isomerization of the SB forming the O state .
Bacteriorhodopsin returns to its resting state when Asp85 releases its proton to Glu204 .
The protonation of Asp85 and Asp96 causing re-isomerization of the SB forming the O state .