...activity, channelrhodopsin-2 (ChR2), a blue light-activated cation channel, from the archaebacteria Chlamydomonas...light, this channel activates neuronal activity by opening and allowing positively charged ions to rapidly.... Light-gated ion channels directly open and close when exposed to light and change the membrane potential...receptor or pathway.
Light-gated ion channels
Light activated ion channels (rhodopsins) either excite or inhibit... range of wavelengths. Excitatory channels allow positively charged ions such as Na+, K+, and Ca++ to ...Tichy et al., 2019), photoswitchable tethered ligands (PTL), and photoswitchable, orthogonal, remotely-tethered...with each light source used.
Channel and activation kinetics
Some channels turn on and off very rapidly...