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| Title | Membrane protein solubilization and structure determination using de novo-designed proteins. |
|---|---|
| Journal, issue, pages | Science, Vol. 393, Issue 6806, Page eadr3817, Year 2026 |
| Publish date | Jul 2, 2026 |
Authors | Ljubica Mihaljević / David E Kim / Pooja D Bandawane / Helen E Eisenach / Andrew J Borst / Alexis Courbet / Connor Weidle / Kenneth D Carr / Everton Bettin / Qiushi Liu / Aldo T Trejos / Sagardip Majumder / Surabhi Kokane / Alexander Stevens / Edin Muratspahić / Thomas Schlichthaerle / Marc Expòsit / Xinting Li / Mila Lamb / Analisa Nicole Azcárraga Murray / Rashmi Ravichandran / Elizabeth C Williams / Shuyuan Hu / Lynda Stuart / Linda Grillová / Nicholas R Thomson / Michael Landreh / Pengxiang Chang / Lorenzo Giacani / Melissa J Caimano / Kelly L Hawley / Neil P King / David Baker / ![]() |
| PubMed Abstract | Developing therapies and vaccines against integral membrane proteins is hindered by their extensive hydrophobic surfaces, which complicate production and structural analysis. Here, we describe a ...Developing therapies and vaccines against integral membrane proteins is hindered by their extensive hydrophobic surfaces, which complicate production and structural analysis. Here, we describe a general deep learning-based design approach for solubilizing native membrane proteins while preserving their sequence, fold, active-site, and ligand-binding properties. Genetically encoded de novo protein WRAPs [water-soluble RFdiffused amphipathic proteins] surround the lipid-interacting hydrophobic surfaces, rendering them thermostable and water-soluble without the need for detergents. We design WRAPs for both monomeric and oligomeric beta-barrel outer membrane proteins and helical multipass transmembrane proteins. A 2.95-angstrom-resolution cryo-electron microscopy structure of WRAPed mycobacterial porin demonstrates that WRAPs can be used for the structural determination of membrane proteins in solution. As a step toward syphilis vaccine development, we generated soluble versions of antigens. |
External links | Science / PubMed:42391386 |
| Methods | EM (single particle) |
| Resolution | 3.9 - 4.88 Å |
| Structure data | ![]() EMDB-75290: cryoEM map for soluble OmpA beta-barrel WRAPs ![]() EMDB-75291: cryoEM map of OmpA helical WRAP ![]() EMDB-75346: Membrane protein solubilization and structure determination using de novo-designed amphipathic proteins ![]() EMDB-75350: WRAP-TP0698 |
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