Fig. 10: Coordination sphere and binding motif of the newly found surface potassium ions located one to each ParC tower domain.
From: Structural basis of topoisomerase targeting by delafloxacin
The figure is from the 2.0 Å V18 delafloxacin core complex X-ray crystal structure (PDB ID: 8QMB) with the 2Fo–Fc electron density map contoured at the 1.5σ level. The ParC backbone is in blue, ParC sidechains are in orange, the potassium ion is in pink and coordinated water molecules are in red. Metal coordination is shown by dashed red lines, and likely hydrogen bonds between the coordinated water molecules and protein residues are denoted by dashed dark blue lines.
