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-Structure paper
| タイトル | Mechanistic insights into the therapeutic properties of delta opioid receptor. |
|---|---|
| ジャーナル・号・ページ | Sci Adv, Vol. 12, Issue 13, Page eaeb6737, Year 2026 |
| 掲載日 | 2026年3月27日 |
著者 | Sarah M Bernhard / Susovan Roy Chowdhury / Tsuyoshi Murata / Erin L Reinl / Nokomis Ramos-Gonzalez / Elizabeth Denn / Kevin Appourchaux / Asuka Inoue / Sarah K England / Jonathan F Fay / Susruta Majumdar / Baron Chanda / Tao Che / ![]() |
| PubMed 要旨 | The delta opioid receptor (DOR) is a promising target for treating pain, anxiety, and depression, yet no DOR-based drugs have reached the clinic. Here, we examine how ligands with varying therapeutic ...The delta opioid receptor (DOR) is a promising target for treating pain, anxiety, and depression, yet no DOR-based drugs have reached the clinic. Here, we examine how ligands with varying therapeutic properties modulate DOR function. While full agonists rapidly internalize the receptor, partial agonists show a slower rate of internalization, and antagonists increase cell-surface DOR levels. High-resolution structures of ligand-bound DOR-G complexes, including those with antagonists engaged, reveal key interactions that account for DOR ligand selectivity, potency, and efficacy. Single-molecule fluorescence resonance energy transfer studies show that DOR dynamically samples three distinct states (active, obligate preactive, and inactive), and transition rates are tuned by both ligand efficacy and G protein coupling. The endogenous agonist, met-enkephalin, not only stabilizes the active-state conformation but also catalyzes transitions between the active and inactive states. These results reveal how ligand-specific interactions and receptor dynamics can govern pharmacological profiles and provide a framework for developing DOR-targeted therapeutics. |
リンク | Sci Adv / PubMed:41880505 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 3.04 - 3.32 Å |
| 構造データ | EMDB-71776, PDB-9ppw: EMDB-71777, PDB-9ppx: EMDB-71778, PDB-9ppy: EMDB-71779, PDB-9ppz: EMDB-71780, PDB-9pq0: |
| 化合物 | ![]() ChemComp-EJ4: ![]() PDB-1clj: ![]() PDB-1cli: ![]() PDB-1lxy: |
| 由来 |
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キーワード | MEMBRANE PROTEIN / GPCR / Delta OPIOID Receptor |
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