The region in the mu opioid receptor conferring selectivity for sufentanil over the delta receptor is different from that over the kappa receptor

FEBS Letters
J ZhuL Y Liu-Chen

Abstract

We determined the binding domains of sufentanil and lofentanil in the mu opioid receptor by comparing their binding affinities to seven mu/delta and six mu/kappa chimeric receptors with those to mu, delta and kappa opioid receptors. TMHs 6 and 7 and the e3 loop of the mu opioid receptor were important for selective binding of sufentanil and lofentanil to the mu over the kappa receptor. TMHs 1-3 and the e1 loop of the mu opioid receptor conferred binding selectivity for sufentanil over the delta receptor. Thus, the region that conferred binding selectivity for sufentanil differs, depending on chimeras used. In addition, the interaction TMHs 1-3 and TMHs 6-7 was crucial for the high affinity binding of these two ligands. These two regions are likely to contain sites of interaction with the ligands or to confer conformations specific to the mu receptor.

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Citations

Nov 12, 2016·Expert Review of Neurotherapeutics·Susanna Porela-TiihonenHannu Kokki
Feb 27, 2004·Protein Engineering, Design & Selection : PEDS·David OttAndreas Plückthun
Apr 28, 2006·The FEBS Journal·Brian E KaneDavid M Ferguson
Jun 4, 2020·Expert Opinion on Pharmacotherapy·Susanna Porela-TiihonenMerja Kokki
Jul 13, 2021·Frontiers in Pharmacology·Santhosh BabyStephen Lewis
Dec 27, 2005·Bioorganic & Medicinal Chemistry·Ljiljana Dosen-MicovicVuk Micovic

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