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在同步机和XFEL源上进行串行晶体检测的纸上固定目标数据采集设备
R Bruce Doak1, Robert L Shoeman1, Alexander Gorel1
1Department of Biomolecular Mechanisms Max Planck Institute for Medical Research Jahnstrasse 29 Heidelberg69120 Germany.
概括
纸上晶片 (SOS) 芯片为串行结晶学 (SX) 提供了一种多功能且具有成本效益的替代方案. 这些芯片可以通过简化X射线衍射实验的晶体处理来确定环境温度结构.
科学领域:
- 结构生物学 结构生物学
- 晶体学 晶体学是指结晶学.
- 生物物理学的生物物理.
背景情况:
- 序列结晶学 (SX) 通过将辐射剂量分布在多个晶体上,在环境温度下确定样本结构.
- 目前的SX方法通常使用"固体支"和有图案的特征用于晶体沉积,这可能是复杂和昂贵的.
- 一个更简单,更通用的替代方案涉及聚合物板之间的三明治微晶,称为板上的板 (SOS) 芯片.
研究的目的:
- 描述两种用于串行结晶学的新型板上芯片 (SOS) 设备.
- 将SOS芯片作为一种更简单,更多功能,更具成本效益的替代品,而不是传统的有图案的固体支.
- 为了证明SOS芯片与现有的同步子和X射线自由电子激光基础设施的兼容性.
主要方法:
- 开发了两个SOS芯片设备:一个紧的同步仪版本和一个更大的版本用于同步仪和X射线自由电子激光 (XFEL) 使用.
- 使用无图案的X射线透明聚合物板将微晶结成三明治,使晶体大小和生长条件灵活.
- 设计更大的芯片,使其与快速扫描的XY-raster阶段兼容,用于高吞吐量数据收集.
主要成果:
- 开发的SOS芯片提供了一种更简单,更便宜的方法来处理串行结晶学中的晶体.
- SOS芯片可以容纳各种晶体大小,从纳米晶体到微晶体,以及各种生长介质.
- 这些设备旨在与标准的宏分子晶体学度仪和先进的XFEL数据收集系统无集成.
结论:
- 纸上晶片 (SOS) 芯片在简化和增强串行晶体学工作流程方面取得了重大进展.
- 与传统的图案支相比,这些设备在晶体制备和处理方面提供了更大的多功能性.
- SOS芯片有助于有效地确定环境温度结构,使先进的结晶学技术更容易获得.
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