FIGURE 3.
Difference spectra between the photostationary state and the dark state of two chimeric channelrhodopsins, compared with that of ChR2. A, ChR5/2. B, ChR2/5. The difference spectra of ChR5/2, ChR2/5, and ChR2 are colored green, magenta, and orange, respectively. The double difference spectra were calculated by subtracting the light-induced difference spectrum of ChR2 with that of each chimera.