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. 2022 Oct 11;255(4-5):385–405. doi: 10.1007/s00232-022-00263-9

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Fig. 5 — Cholesterol reduces the conformational degrees of freedom for lipid acyl chain segments yielding closer molecular packing. a DMPC-d₅₄ in the liquid-disordered (l_d) phase, and b–d DMPC-d₅₄ containing various mole fractions of cholesterol (Chol) in the liquid-ordered (l_o) phase. Powder type spectra (brown) of randomly oriented multilamellar dispersions were numerically inverted (de-Paked) to yield subspectra corresponding to the θ = 0° orientation (green). Note that a distribution of residual quadrupolar couplings (RQCs) corresponds to the various C²H₂ and C²H₃ groups with a progressive increase due to cholesterol. Adapted from Ref. (Martinez et al. 2004)