6M1I:
reference: Cryo-EM structures of PAC1 receptor reveal ligand binding mechanism., Wang J, Song X, Zhang D, Chen X, Li X, Sun Y, Li C, Song Y, Ding Y, Ren R, Harrington EH, Hu LA, Zhong W, Xu C, Huang X, Wang HW, Ma Y, Cell Res. 2020 Feb 11. pii: 10.1038/s41422-020-0280-2. doi:, 10.1038/s41422-020-0280-2. PMID: 32047270

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