A new study in Cell shows the 3D structure of a kappa-opioid receptor in its active state with a biased agonist bound to it. Researchers say this could help them develop new, non-addictive painkillers that only bind to kappa-opioid receptors.

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A new study in Cell shows the 3D structure of a kappa-opioid receptor in its active state with a biased agonist bound to it. Researchers say this could help them develop new, non-addictive painkillers that only bind to kappa-opioid receptors.