Figure 1: Opsin and chromophore structures of C1C2 and HsBR.
From: Atomistic design of microbial opsin-based blue-shifted optogenetics tools
(a) Chemical structure of the chromophore, RPSB, and its atom numbering. (b–d) Protein structure of C1C2 (PDB 3UG9). Overall structure (b), and close-up views of the chromophore binding pocket around the β-ionone ring of the all-trans retinal (ATR) in licorice (c) and van der Waals (vdW) (d) representations. (e–g) Protein structure of HsBR (PDB ID: 1C3W). Overall structure (e), and close-up views of the chromophore binding pocket around the β-ionone ring of ATR in licorice (f) and vdW (g) representations.
