Fig. 1.

Powdered rhodopsin-CHAPS detergent complex retains its photochemical functionality and native helicity. UV-visible spectra for rhodopsin-CHAPS complex after lyophilization for dark state, light activated state, and when bleached with opsin. Inset: Far-UV circular dichroism (CD) spectra for re-solubilized powdered rhodopsin and opsin at pH 6.9 and T= 288 K.