Comparison of fluorescence spectra of 244B-opsin and M257Y/244B-opsin in DDM and nanodiscs.
A, fluorescence emission spectra of 244B-opsin (black, λmax = 451 nm) and M257Y/244B-opsin (red, λmax = 456 nm) in DDM. B, fluorescence spectra of M257Y/244B-opsin in the absence (red, λmax = 456-nm) and presence (purple, λmax = 462-nm) of Gα-peptide in DDM. C, fluorescence spectra of 244B-opsin in the absence (black, λmax = 451 nm) and presence (purple, λmax = 451 nm) of Gα-peptide in DDM. D, fluorescence spectra of 244B-opsin (black, λmax = 454 nm) and M257Y/244B-opsin (red, λmax = 460 nm) in nanodiscs. E, fluorescence spectra of M257Y/244B-opsin in the absence (red, λmax = 460 nm) and presence (purple, λmax = 463 nm) of Gα-peptide in nanodiscs. F, fluorescence spectra of 244B-opsin in the absence (black, λmax = 454 nm) and presence (purple, λmax = 454 nm) of Gα-peptide in nanodiscs. The experiments were carried out at 10 °C.