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-Structure paper
| タイトル | Laser phase plate improves structure determination of small proteins by cryo-EM. |
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| ジャーナル・号・ページ | Science, Vol. 393, Issue 6807, Page 195-199, Year 2026 |
| 掲載日 | 2026年7月9日 |
著者 | Petar N Petrov / Jessie T Zhang / Jonathan Remis / Jeremy J Axelrod / Hang Cheng / Eric S Cooper / Ian K Hicklin / Shahar Sandhaus / Cooper Schnurr / Robert M Glaeser / Holger Müller / ![]() |
| PubMed 要旨 | Phase plates can, in principle, overcome the poor image contrast in cryo-electron microscopy (cryo-EM) and the resulting limits on the structural reconstruction of small proteins. However, previous ...Phase plates can, in principle, overcome the poor image contrast in cryo-electron microscopy (cryo-EM) and the resulting limits on the structural reconstruction of small proteins. However, previous designs have been unstable and compromised the high-resolution signal and have thus been unable to surpass results achieved by standard cryo-EM. Here, we show that the laser phase plate (LPP), installed in a modern, custom Titan Krios microscope, enhances the resolution in single-particle reconstruction of small proteins by improving specimen-motion correction and recovery of information from the early frames, as well as particle visualization, three-dimensional classification, and alignment. These advances use standard defocus ranges and reconstruction procedures but open the door to LPP-tailored protocols, offering further improvements by leveraging the LPP demonstrated here. |
リンク | Science / PubMed:42275466 |
| 手法 | EM (単粒子) |
| 解像度 | 2.43 - 4.3 Å |
| 構造データ | ![]() EMDB-76790: Rabbit Aldolase, Laser Phase Plate TEM, Laser-ON dataset 1 (A1) ![]() EMDB-76791: Rabbit Aldolase, Laser Phase Plate TEM, Laser-OFF dataset 1 (A1) ![]() EMDB-76792: Rabbit Aldolase, Laser Phase Plate TEM, Laser-ON dataset 2 (A2) ![]() EMDB-76793: Rabbit Aldolase, Laser Phase Plate TEM, Laser-OFF dataset 2 (A2) ![]() EMDB-76794: Rabbit Aldolase, Laser Phase Plate TEM, Laser-ON dataset 3 (A3) ![]() EMDB-76797: Rabbit Aldolase, Laser Phase Plate TEM, Laser-OFF dataset 3 (A3) ![]() EMDB-76802: Human Hemoglobin, Laser Phase Plate TEM, Laser-ON dataset 1 (H1) ![]() EMDB-76804: Human Hemoglobin, Laser Phase Plate TEM, Laser-OFF dataset 1 (H1) ![]() EMDB-76805: Human Hemoglobin, Laser Phase Plate TEM, Laser-ON dataset 2 (H2) ![]() EMDB-76806: Human Hemoglobin, Laser Phase Plate TEM, Laser-OFF dataset 2 (H2) ![]() EMDB-76807: Human Hemoglobin, Laser Phase Plate TEM, Laser-ON dataset 3 (H3) ![]() EMDB-76809: Human Hemoglobin, Laser Phase Plate TEM, Laser-OFF dataset 3 (H3) ![]() EMDB-76810: Human Hemoglobin, Laser Phase Plate TEM, Laser-ON, Refined initial 3D class (IC-ON) ![]() EMDB-76811: Human Hemoglobin, Laser Phase Plate TEM, Laser-OFF, Refined initial 3D class (IC-OFF) |
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Homo sapiens (ヒト)