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Antibody Structure01:10

Antibody Structure

Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
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Brick-cutting techniques involve various tools and methods to shape bricks for construction. A mason's hammer with a chisel-pointed end is used for basic shaping through sharp, precise strikes. For more complex shapes requiring higher precision, a power saw with a water-cooled diamond blade is used.
Cut bricks are categorized by size. Bricks cut to half their original length are called half-bats, while those cut to three-fourths their length are known as three-fourth bats.
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相关实验视频

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Performing Microscope-Mounted Y-Shaped Cutting Tests
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Performing Microscope-Mounted Y-Shaped Cutting Tests

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具有可切换的状表面结构的Y形两式刷子.

Duangrut Julthongpiput1, Yen-Hsi Lin, Jing Teng

  • 1Department of Materials Science & Engineering, Iowa State University, Ames, Iowa 50011, USA.

Journal of the American Chemical Society
|December 18, 2003
PubMed
概括

研究人员使用Y形分子创建了新的纳米级表面结构. 这些结构在溶剂中可逆地重组,提供适应性湿特性和纳米级物体捕获的潜力.

科学领域:

  • 材料科学 材料科学 材料科学
  • 表面化学 表面化学
  • 纳米技术 纳米技术

背景情况:

  • 接种的聚合物刷对于表面修改至关重要.
  • 由于其架构,Y形块共聚合物提供了独特的自组装可能性.
  • 控制纳米级表面结构是先进材料应用的关键.

研究的目的:

  • 为了研究纳米尺度表面结构的形成和行为从移植的Y形分子.
  • 了解分子架构和溶剂环境在纳米结构形成中的作用.
  • 探索这些结构对于适应性表面特性和纳米设备的潜力.

主要方法:

  • 合成与不兼容的聚合物臂 (聚乙烯和聚三乙烯酸) 的Y形分子.
  • 分子对功能化表面进行共价接种.
  • 移植后的水解来赋予两性.
  • 使用先进的成像技术 (隐含) 对纳米级表面结构的观察和分析.
  • 研究选择性溶剂中的结构重组.

主要成果:

  • 由于空间限制而形成分离的钉状小和坑状小.
  • 在选择性溶剂中证明聚合物臂的可逆形状重排.

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  • 建立一个小胞形成和分离的模型.
  • 与纳米级结构变化相关的适应性宏观湿性质的观察.

    • 结论:

    • 接种后,Y形分子形成独特的,空间受限的状纳米结构.
    • 这些纳米结构在响应溶剂变化时表现出可逆的重组,从而产生可调的表面特性.
    • 开发的两形Y形刷子提供了一个有前途的平台,用于创建适应性表面和有图案的基板,用于纳米物体操纵的纳米井.