Assertion: lipid's structure | /r/HasProperty | β 2 adrenergic receptor
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Source sentences:
text: From left to right, the structures of rhodopsin, (137) the β 2 adrenergic receptor (β 2 AR), (138) and the smoothened receptor (139) are shown as cartoons, with the 7 transmembrane (TM) helices highlighted in different colors.