5XW6:
reference: Structural insights into the competitive inhibition of the ATP-gated P2X receptor channel., Kasuya G, Yamaura T, Ma XB, Nakamura R, Takemoto M, Nagumo H, Tanaka E, Dohmae N, Nakane T, Yu Y, Ishitani R, Matsuzaki O, Hattori M, Nureki O, Nat Commun. 2017 Oct 12;8(1):876. doi: 10.1038/s41467-017-00887-9. PMID: 29026074

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