Coral anthozoan-specific opsins employ a novel chloride counterion for spectral tuning
Yusuke Sakai, Saumik Sen, Tomohiro Sugihara, Yukiya Kakeyama, Makoto Iwasaki, Gebhard F. X. Schertler, Xavier Deupí, Mitsumasa Koyanagi, Akihisa Terakita
This study identifies a novel chloride counterion mechanism in coral opsins that stabilizes the Schiff base proton, enabling light sensitivity without a traditional counterion residue.
bioRxiv · Dec 12, 2024 · PreprintBiophysics