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相关概念视频

Structures of Solids02:22

Structures of Solids

17.8K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
17.8K
Metallic Solids02:37

Metallic Solids

16.4K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and...
16.4K
X-ray Crystallography02:18

X-ray Crystallography

21.6K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
21.6K
Determination of Crystal Structures01:29

Determination of Crystal Structures

135
In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
135

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相关实验视频

Updated: May 4, 2026

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
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Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

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第二代晶体海绵使得在标准化条件下对各种分子进行一致的结构分析.

Wei He1, Hiroki Takezawa2, Makoto Fujita1,3

  • 1Division of Advanced Molecular Science, Institute For Molecular Science (IMS), 5-1 Higashiyama, Myodaiji, Okazaki, Aichi, Japan.

Angewandte Chemie (International ed. in English)
|March 16, 2026
PubMed
概括

一种新的晶体海绵方法简化了复杂分子的结晶. 这种方法使用协调和特定的聚离子,使各种化合物的标准化结晶成为可能,包括药品.

关键词:
主人 客人 客人分子识别分子识别自动组装的自动组装机结构分析,结构分析分析.

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Growing Protein Crystals with Distinct Dimensions Using Automated Crystallization Coupled with In Situ Dynamic Light Scattering
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Structural Studies of Macromolecules in Solution using Small Angle X-Ray Scattering
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相关实验视频

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Growing Protein Crystals with Distinct Dimensions Using Automated Crystallization Coupled with In Situ Dynamic Light Scattering
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科学领域:

  • 晶体学 晶体学是指结晶学.
  • 超分子化学 超分子化学
  • 材料科学 材料科学 材料科学

背景情况:

  • 复杂分子的结晶因对结构变化的敏感性而具有挑战性,通常需要广泛的试错.
  • 此前已经开发了第二代晶体海绵 (2G-CS),在盐形成之前将目标封装在协调中,以促进晶体生长.
  • 目前的2G-CS方法需要逐个优化,以实现实际的结晶.

研究的目的:

  • 使用晶体海绵系统,为各种复杂分子开发标准化结晶方法.
  • 为了证明将协调子与特定的聚离子相结合的有效性,以实现广泛的应用.
  • 为了减少在获取晶体进行结构分析时对分子特定优化的需求.

主要方法:

  • 使用了第二代晶体海绵 (2G-CS) 系统,包括一个协调.
  • 将子与特定的对称不匹配的聚离子相结合,以促进结晶.
  • 在39个客分子的多样化测试组中应用了一组单一的标准化条件.

主要成果:

  • 在相同的条件下,在39个 (80%) 结构上不同的客分子中成功结晶了31个.
  • 该方法证明对极性,中型和复杂分子有效,其中许多具有药物相关性.
  • 分析显示,聚离子诱导了对子和离子的一致的包装安排,无论客体结构如何.

结论:

  • 使用特定的协调-聚离子组合的标准化结晶协议对广泛的复杂分子有效.
  • 观察到的重复性包装类型表明了标准化条件广泛适用的机制.
  • 这种简化方法具有显著的潜力,可以加速制药重要化合物的结构确定.