Bibliographic Details
| Title: |
Identification of a binding site for small molecule inhibitors targeting human TRPM4. |
| Authors: |
Ekundayo, Babatunde, Arullampalam, Prakash, Gerber, Christian E., Hämmerli, Anne-Flore, Guichard, Sabrina, Boukenna, Mey, Ross-Kaschitza, Daniela, Lochner, Martin, Rougier, Jean-Sebastien, Stahlberg, Henning, Abriel, Hugues, Ni, Dongchun |
| Source: |
Nature Communications; 1/19/2025, Vol. 16 Issue 1, p1-14, 14p |
| Subject Terms: |
LIFE sciences, AMINOBENZOIC acids, SMALL molecules, BINDING sites, MONOVALENT cations |
| Abstract: |
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. TRPM4 is an ion channel associated with various genetic and cardiovascular disorders. The authors utilized cryo-EM and patch clamp experiments to determine the binding sites of potent and specific TRPM4 inhibitors driving further drug development targeting TRPM4. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
