SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, 94025, USA.
Physics Department, Stanford University, 450 Serra Mall, Stanford, California, 94305, USA.
Sci Data. 2020 Nov 19;7(1):404. doi: 10.1038/s41597-020-00745-2.
Single Particle Imaging (SPI) with intense coherent X-ray pulses from X-ray free-electron lasers (XFELs) has the potential to produce molecular structures without the need for crystallization or freezing. Here we present a dataset of 285,944 diffraction patterns from aerosolized Coliphage PR772 virus particles injected into the femtosecond X-ray pulses of the Linac Coherent Light Source (LCLS). Additional exposures with background information are also deposited. The diffraction data were collected at the Atomic, Molecular and Optical Science Instrument (AMO) of the LCLS in 4 experimental beam times during a period of four years. The photon energy was either 1.2 or 1.7 keV and the pulse energy was between 2 and 4 mJ in a focal spot of about 1.3 μm x 1.7 μm full width at half maximum (FWHM). The X-ray laser pulses captured the particles in random orientations. The data offer insight into aerosolised virus particles in the gas phase, contain information relevant to improving experimental parameters, and provide a basis for developing algorithms for image analysis and reconstruction.
利用高强度相干 X 射线脉冲从 X 射线自由电子激光器(XFEL)进行单颗粒成像(SPI),有可能在无需结晶或冷冻的情况下获得分子结构。这里我们提供了一个数据集,其中包含 285944 个气溶胶化噬菌体 PR772 病毒颗粒的衍射图案,这些颗粒被注入到 Linac Coherent Light Source(LCLS)的飞秒 X 射线脉冲中。还提供了具有背景信息的附加曝光。这些衍射数据是在 LCLS 的原子、分子和光学科学仪器(AMO)中收集的,在四年的时间里进行了 4 次实验光束时间。光子能量为 1.2 或 1.7keV,在大约 1.3μm x 1.7μm 半最大值全宽(FWHM)的焦点处,脉冲能量在 2 到 4mJ 之间。X 射线激光脉冲以随机方向捕获颗粒。这些数据深入了解了气相中的气溶胶化病毒颗粒,包含了有助于改进实验参数的信息,并为图像分析和重建算法的开发提供了基础。