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-Structure paper
| タイトル | MISO: microfluidic protein isolation enables single-particle cryo-EM structure determination from a single cell colony. |
|---|---|
| ジャーナル・号・ページ | Nat Methods, Vol. 22, Issue 12, Page 2563-2573, Year 2025 |
| 掲載日 | 2025年11月13日 |
著者 | Gangadhar Eluru / Steven De Gieter / Stephan Schenck / Annelore Stroobants / Binesh Shrestha / Paul Erbel / Janine D Brunner / Rouslan G Efremov / ![]() |
| PubMed 要旨 | Single-particle cryogenic electron microscopy (cryo-EM) enables reconstruction of atomic-resolution 3D maps of proteins by visualizing thousands to millions of purified protein particles embedded in ...Single-particle cryogenic electron microscopy (cryo-EM) enables reconstruction of atomic-resolution 3D maps of proteins by visualizing thousands to millions of purified protein particles embedded in vitreous ice. This corresponds to picograms of purified protein, which can potentially be isolated from a few thousand cells. Hence, cryo-EM holds the potential of a very sensitive analytical method for delivering high-resolution protein structure as a readout. In practice, millions of times more starting biological material is required to prepare cryo-EM grids. Here we show that using a micro isolation (MISO) method, which combines microfluidics-based protein purification with cryo-EM grid preparation, cryo-EM structures of soluble bacterial and eukaryotic membrane proteins can be solved starting from less than 1 µg of a target protein and progressing from cells to cryo-EM grids within a few hours. This scales down the amount of starting biological material hundreds to thousands of times, opening possibilities for the structural characterization of hitherto inaccessible proteins. |
リンク | Nat Methods / PubMed:41233542 |
| 手法 | EM (単粒子) |
| 解像度 | 2.2 - 3.51 Å |
| 構造データ | EMDB-52333, PDB-9hpl: EMDB-52334, PDB-9hpm: EMDB-52344, PDB-9hqn: EMDB-52345, PDB-9hqo: EMDB-52346, PDB-9hqp: ![]() EMDB-52486: Cryo-EM structure of TRPC6 (complete particle) purified and plunged using MISO (micro-purification) ![]() EMDB-52487: Cryo-EM structure of TRPC6 (extra cellular domain) purified and plunged using MISO (micro-purification) |
| 化合物 | ![]() ChemComp-HOH: ![]() ChemComp-NAG: ![]() ChemComp-CA: |
| 由来 |
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キーワード | HYDROLASE / Glycosyl hydrolase / MEMBRANE PROTEIN / Chloride channel gated by pH that facilitates the entry of chloride ions into cells upon exposure to extracellular acidic pH / pH-gated chloride channel / lipid scramblase |
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