SRII (IMAGE) Moscow Institute of Physics and Technology Caption Twofold structure of the protein complex of bacterial sensory photoreceptor rhodopsin II (SRII) and its cognate transducer (HtrII) with the U- and V-conformation shown in yellow and green, respectively. Credit MIPT Press Office Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.