+検索条件
-Structure paper
| タイトル | Discovery and mechanism of negative allosteric modulation of the α7 nicotinic acetylcholine receptor by nanobodies. |
|---|---|
| ジャーナル・号・ページ | Proc Natl Acad Sci U S A, Vol. 123, Issue 4, Page e2514734123, Year 2026 |
| 掲載日 | 2026年1月27日 |
著者 | Nathalie Barilone / Maria Vangelatou / F Zahra Marouf / Gabrielle Dejean de la Bâtie / Qimeng Li / Pierre Lafaye / Gabriel Aymé / Pierre-Jean Corringer / Marie S Prevost / ![]() |
| PubMed 要旨 | α7 nicotinic receptors are neurotransmitter-gated ion channels involved in neurological and inflammatory diseases. Ligands acting on its neurotransmitter binding site and on the channel domain of ...α7 nicotinic receptors are neurotransmitter-gated ion channels involved in neurological and inflammatory diseases. Ligands acting on its neurotransmitter binding site and on the channel domain of α7 have been extensively developed, yielding a wide range of orthosteric effectors and allosteric positive modulators. Here, we present the functional and structural characterization of two camelid antibody fragments, or nanobodies, F1 and E6, that inhibit α7 activity by acting as negative allosteric modulators, an underrepresented class of ligands. Cryo-EM structures of the nanobodies in complex with α7 show that both nanobodies form a pentameric bundle at the apex of the receptor, each nanobody interacting through a conserved set of residues at α7 subunit interfaces. Electrophysiological experiments suggest that E6 inhibits the activity of α7 by stabilizing its resting conformation, and that internanobodies interactions are key to its activity. Those two nanobodies expand the toolbox for human α7 modulation, opening new possibilities for its pharmacological control with far reaching potentialities in clinics. |
リンク | Proc Natl Acad Sci U S A / PubMed:41576092 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.16 - 2.28 Å |
| 構造データ | EMDB-53355, PDB-9qtn: EMDB-53356, PDB-9qto: |
| 化合物 | ![]() ChemComp-HOH: |
| 由来 |
|
キーワード | MEMBRANE PROTEIN / Nicotinic receptor / Nanobody |
ムービー
コントローラー
構造ビューア
万見文献について



著者

リンク




homo sapiens (ヒト)
キーワード