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-Structure paper
タイトル | Identification of a binding site for small molecule inhibitors targeting human TRPM4. |
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ジャーナル・号・ページ | Nat Commun, Vol. 16, Issue 1, Page 833, Year 2025 |
掲載日 | 2025年1月19日 |
![]() | Babatunde Ekundayo / Prakash Arullampalam / Christian E Gerber / Anne-Flore Hämmerli / Sabrina Guichard / Mey Boukenna / Daniela Ross-Kaschitza / Martin Lochner / Jean-Sebastien Rougier / Henning Stahlberg / Hugues Abriel / Dongchun Ni / ![]() ![]() |
PubMed 要旨 | Transient receptor potential (TRP) melastatin 4 (TRPM4) protein is a calcium-activated monovalent cation channel associated with various genetic and cardiovascular disorders. The anthranilic acid ...Transient receptor potential (TRP) melastatin 4 (TRPM4) protein is a calcium-activated monovalent cation channel associated with various genetic and cardiovascular disorders. The anthranilic acid derivative NBA is a potent and specific TRPM4 inhibitor, but its binding site in TRPM4 has been unknown, although this information is crucial for drug development targeting TRPM4. We determine three cryo-EM structures of full-length human TRPM4 embedded in native lipid nanodiscs without inhibitor, bound to NBA, and an anthranilic acid derivative, IBA. We found that the small molecules NBA and IBA were bound in a pocket formed between the S3, S4, and TRP helices and the S4-S5 linker of TRPM4. Our structural data and results from patch clamp experiments enable validation of a binding site for small molecule inhibitors, paving the way for further drug development targeting TRPM4. |
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手法 | EM (単粒子) |
解像度 | 2.8 - 4.4 Å |
構造データ | EMDB-19057, PDB-8rcr: ![]() EMDB-19060: HTRPM4-NBA EMDB-19061, PDB-8rcu: EMDB-19069, PDB-8rd9: ![]() EMDB-19072: DDM/CHS HTRPM4 ![]() EMDB-19073: human TRPM4 LMNG ligand CA ![]() EMDB-19074: mouse TRPM4 with ligand DDM/CHS |
化合物 | ![]() ChemComp-CLR: ![]() PDB-1hz5: ![]() PDB-1h0c: |
由来 |
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![]() | MEMBRANE PROTEIN / trpm / inhibitor |