4PXZ:
reference: Agonist-bound structure of the human P2Y12 receptor., Zhang J, Zhang K, Gao ZG, Paoletta S, Zhang D, Han GW, Li T, Ma L, Zhang W, Muller CE, Yang H, Jiang H, Cherezov V, Katritch V, Jacobson KA, Stevens RC, Wu B, Zhao Q, Nature. 2014 May 1;509(7498):119-22. doi: 10.1038/nature13288. PMID: 24784220

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