Chromophore structure in a long-lived intermediate of heliorhodopsins : switching of a hydrogen bonding partner of protonated Schiff base

• Main Authors: Urui, Taito, Otomo, Akihiro, Mizuno, Misao, Kandori, Hideki, Mizutani, Yasuhisa
• Other Authors: Asian Spectroscopy Conference 2020
• Format: Conference or Workshop Item
• Language: English
• Published: 2020
• Subjects: Science::Chemistry; Rhodopsin; Retinal Chromophore
• Online Access: https://hdl.handle.net/10356/144338
• Institution: Nanyang Technological University

Heliorhodopsin (HeR) is a novel class of retinal proteins discovered in 2018 [1]. HeR contains an all-trans-retinal as a chromophore, which is covalently bound to a lysine residue through a protonated Schiff base linkage. Although amino acid sequences of HeR are largely different from those of type-...