GLIC Protein with Ethanol (IMAGE) University of Texas at Austin Caption This shows: (a) Stereo view of protein atoms neighbouring one ethanol molecule (orange) in the co-crystal structure with GLIC F14′A. Dotted lines indicate putative hydrogen bonds with the backbone carbonyl of N200 in the left-hand subunit (dark grey) and with N15′ and E19′ in the right-hand subunit (light grey). (b) Protein atoms neighboring one molecule of 2-bromoethanol (orange) in the co-crystal structure with GLIC F14′A, displayed as in a. Sigma-A-averaged electron density surrounding ethanol and 2-bromoethanol are contoured at 1.0 σ (blue mesh) and bromine-anomalous map is contoured at 5.0 σ (magenta mesh). Credit <i>Nature Communications</i> Usage Restrictions Credit <i>Nature Communications</i>. 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.