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. Author manuscript; available in PMC: 2017 Jul 25.
Published in final edited form as: Angew Chem Int Ed Engl. 2016 Jun 15;55(31):8984–8987. doi: 10.1002/anie.201604055

Figure 2.

Figure 2

a) Close-up of the main Xe binding site. Secondary structure elements--helices 1 and 12 and the flanking beta sheet—are colored red (N-terminus) to blue (C-terminus). Xe atoms (blue spheres) establish van der Waals interactions with many sidechains (gray sticks). b) Hyper-CEST z-spectra for wt-bla and I263A, 80 μM in pH 7.2 PBS.