Extended Data Fig. 2: Structural analysis of GtACR1.
From: Crystal structure of the natural anion-conducting channelrhodopsin GtACR1

a, 2Fo − Fc maps (blue mesh, contoured at 1σ) for the retinal-binding pockets of chains A–D. b, 2Fo − Fc maps (blue mesh, contoured at 1σ) for the lipid molecules. c, 2Fo − Fc maps (blue mesh, contoured at 1σ) and Fo − Fc maps (green and red meshes, contoured at 3.0σ and −3.0σ, respectively) for the Schiff base region of chains A–D. Water molecules are shown as red spheres. d, Table describing data collection and refinement statistics of GtACR1. Dataset was collected from 80 crystals. Values in parentheses are for the highest-resolution shell.