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. 2021 May 20;4:602. doi: 10.1038/s42003-021-02122-0

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Fig. 3 — a The cone-shaped pocket formed by three adjacent paddle domains (blue, purple, and cyan) in the membrane (indicated by dashed lines). Within the pocket, there is a bulky lipid density (gray mesh). The kink point in TM3, G160, is shown as black balls. b Zoomed-in views of the lipid density (as boxed in a) in the pocket. R120 and Q100 seem to directly interact with the lipid headgroup.