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. 2011 Feb 23;6(2):e16999. doi: 10.1371/journal.pone.0016999

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Takigawa et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(a) 3D structure of GPCR (β2 adrenergic receptor) and a ligand (Carazolol, colored black) derived from PDB, target substructure in GPCR being colored according to the corresponding group of significant substructure pairs. (b) An enlargement of (a), focusing on the binding site with target substructures including DRY (for activation), and CW, LPF, PFF, LVM and SID (for binding), all being in G6.