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. Author manuscript; available in PMC: 2023 Jun 8.
Published in final edited form as: Appl Magn Reson. 2021 Sep 12;52(10):1261–1289. doi: 10.1007/s00723-021-01398-z

Figure 6.

Figure 6

Time progression plots and electron density curves for POPC and POPC/chol at 298 K. Upper plots show a single representative O2 molecule trajectory each for POPC (A) and POPC/chol (B), along the bilayer-depth dimension, z. Blue vertical lines denote the highest points of electron density, at 19.6 Å for POPC and 23.6 Å POPC/chol. Gray lines indicate the highest point of resistance to permeation, at 21 Å for POPC and 25Å for POPC/chol. Yellow areas in panel B denote the cholesterol-ring-spanning region (III). Lower plots show bilayer-depth-dependent electron density, normalized to give an area under the curve of 1, for POPC (C) and POPC/chol (D). Cropped bilayer images juxtaposed with plots to show corresponding structural features. Color scheme as in Fig. 2.