Fig. 8. Rendering of the crystal structure of the Q8·(H-Phe-Gly-Gly-OH)2 complex shown from different viewing angles. The peptide is shown as space-filling, and Q8 as sticks. Peptide carbons are green. Q8 carbons are grey. Oxygens are red. Nitrogens are blue. Hydrogens are not shown. Yellow dashes show key intermolecular electrostatic interactions.18.
