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Coherent x-ray diffractive imaging and nucleation of protein crystals.

机译:相干X射线衍射成像和蛋白质晶体成核。

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摘要

The determination of the atomic structure of proteins is very important since much understanding of biological processes cannot be achieved without knowledge of the atomic structure. The preparation of high quality protein crystals suitable for structure determination often proves difficult and even impossible. The technique of coherent x-ray diffraction was used to try to gain a better understanding of protein crystal nucleation and growth. Results are presented along with technical difficulties arising from radiation damage. The results reveal the presence of surface strain in micron-sized protein crystals. Studies of nucleation at low temperature were performed along with simulations. The analysis revealed that isotropic nucleation was the main pathway but that nucleation also proceeds in a more planar fashion in some cases.
机译:蛋白质原子结构的确定非常重要,因为如果不了解原子结构就无法获得对生物学过程的大量了解。通常证明制备适合结构确定的高质量蛋白质晶体是困难的,甚至是不可能的。相干X射线衍射技术用于试图更好地理解蛋白质晶体的成核和生长。介绍了结果以及由于辐射损坏而引起的技术困难。结果表明在微米大小的蛋白质晶体中存在表面应变。进行了低温成核的研究和模拟。分析表明,各向同性成核是主要途径,但在某些情况下,成核也以更平面的方式进行。

著录项

  • 作者

    Boutet, Sebastien.;

  • 作者单位

    University of Illinois at Urbana-Champaign.;

  • 授予单位 University of Illinois at Urbana-Champaign.;
  • 学科 Physics Condensed Matter.; Biophysics General.
  • 学位 Ph.D.
  • 年度 2005
  • 页码 145 p.
  • 总页数 145
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物物理学;
  • 关键词

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