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• 4DJH: structure of the human kappa opioid receptor in complex with jdtic (10.1038/NATURE10939 )
• 6B73: crystal structure of a nanobody-stabilized active state of the kappa- opioid receptor (10.1016/J.CELL.2017.12.011 )
• 6VI4: nanobody-enabled monitoring of kappa opioid receptor states (10.1038/S41467-020-14889-7 )