anion channelrhodopsins
Protein DomainAnion channelrhodopsins (ACRs) are natural light-gated anion-conducting microbial rhodopsins from cryptophyte algae used as optogenetic actuators. In cultured neonatal rat ventricular cardiomyocytes, their expression enables light-evoked inhibitory currents, suppression of electrical activity, and shortening of action potential duration when illumination is applied during repolarization.