channelrhodopsin 2 C128T mutant
Protein DomainChannelrhodopsin-2 C128T is a point mutant of ChR2 with high-resolution structural characterization and a markedly prolonged open-state lifetime relative to wild-type ChR2. Structural comparison links residue C128 in the DC gate to retinal Schiff base interactions and coupling between the DC gate and central gate.