Fig. 3.

Dynamical properties of the HAMP-KCM inferred by PDS. Schematic diagrams of H1-Tar and H1-2-Tar are marked with the residues where spin labels have been introduced. Because of dimeric symmetry, each spin-site position produces two spin sites from which distance distributions across the helix bundle are measured by PDS. Distance distributions [P(r)] measured by double-electron electron resonance spectroscopy are shown for H1-Tar (red) and H1-2-Tar (blue; both in the QEQE adaptation state).