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A) CB2 complexed with compound 33 (yellow carbon atoms). Transmembrane regions (TM) are shown as white ribbons; the image was prepared using PyMOL (http://www.pymol.org). B) A putative hydrogen bond between S3.31 and compound 33 (yellow carbon atoms) is represented as red dashes. The aromatic pocket is enclosed by residues F5.46 and W6.48 (green carbon atoms).
