ジャーナル: Structure / 年: 2018 タイトル: A Rare Lysozyme Crystal Form Solved Using Highly Redundant Multiple Electron Diffraction Datasets from Micron-Sized Crystals. 著者: Hongyi Xu / Hugo Lebrette / Taimin Yang / Vivek Srinivas / Sven Hovmöller / Martin Högbom / Xiaodong Zou / 要旨: Recent developments of novel electron diffraction techniques have shown to be powerful for determination of atomic resolution structures from micron- and nano-sized crystals, too small to be studied ...Recent developments of novel electron diffraction techniques have shown to be powerful for determination of atomic resolution structures from micron- and nano-sized crystals, too small to be studied by single-crystal X-ray diffraction. In this work, the structure of a rare lysozyme polymorph is solved and refined using continuous rotation MicroED data and standard X-ray crystallographic software. Data collection was performed on a standard 200 kV transmission electron microscope (TEM) using a highly sensitive detector with a short readout time. The data collection is fast (∼3 min per crystal), allowing multiple datasets to be rapidly collected from a large number of crystals. We show that merging data from 33 crystals significantly improves not only the data completeness, overall I/σ and the data redundancy, but also the quality of the final atomic model. This is extremely useful for electron beam-sensitive crystals of low symmetry or with a preferred orientation on the TEM grid.
名称: 3D crystals of Lysozyme C from Gallus gallus / タイプ: COMPLEX / Entity ID: #1 / 由来: NATURAL
分子量
実験値: NO
由来(天然)
生物種: Gallus gallus (ニワトリ)
EM crystal formation
Atmosphere: AIR 詳細: 2 microliters of Lysozyme (8 mg/ml in 10 mM Tris-HCl pH 8.0) was mixed with 2 microliters of precipitant solution consisting of 1 M potassium nitrate, 0.1 M sodium acetate trihydrate pH 3.4. ...詳細: 2 microliters of Lysozyme (8 mg/ml in 10 mM Tris-HCl pH 8.0) was mixed with 2 microliters of precipitant solution consisting of 1 M potassium nitrate, 0.1 M sodium acetate trihydrate pH 3.4. Thin fibrous needle-shaped crystal clusters were grown by the hanging drop vapor diffusion method. 温度: 294 K / Time: 2 DAY