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相关概念视频

Plant Tissues01:18

Plant Tissues

Plants are multicellular eukaryotes with tissue systems made of various cell types that carry out specific functions. Different tissues work together to perform a unique function and form an organ. Organs working together form organ systems. Vascular plants have two distinct organ systems: a shoot system and a root system. The shoot system consists of two portions: the vegetative (non-reproductive) parts of the plant, such as the leaves and the stems, and the reproductive parts of the plant,...
Cell Adhesion in Plants01:14

Cell Adhesion in Plants

Plants have rigid cell walls that are made up of cell wall polysaccharides that mediate cell-cell adhesion. The primary cell walls of plants consist of two independent and interacting polysaccharide networks: a pectin matrix that embeds the second network comprising cellulose and hemicelluloses.
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose, and...

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相关实验视频

Updated: Jul 7, 2026

Label-free in situ Imaging of Lignification in Plant Cell Walls
07:35

Label-free in situ Imaging of Lignification in Plant Cell Walls

Published on: November 1, 2010

在树枝状体内部的分子印记.

Steven C Zimmerman1, Ilya Zharov, Michael S Wendland

  • 1Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA. sczimmer@uiuc.edu

Journal of the American Chemical Society
|October 30, 2003
PubMed
概括

研究人员使用一种新的印记技术创建了合成宿主,以结合氨酸. 这些宿主对能够形成多个键的氨酸具有很高的选择性,从而推进了分子识别技术.

科学领域:

  • 超分子化学 超分子化学
  • 材料科学 材料科学 材料科学
  • 有机合成 有机合成

背景情况:

  • 在化学中,开发用于分子识别的合成受体至关重要.
  • 树枝提供独特的结构性质,用于创建量身定制的结合点.
  • 氨酸是具有多种应用的重要分子,需要选择性结合策略.

研究的目的:

  • 为了合成能够结合氨酸的新型合成宿主.
  • 在交叉连接的树枝状结构中创建印记结合点.
  • 为了研究这些宿主对各种氨酸的选择性.

主要方法:

  • 使用氨酸模板的混合共价-非共价印记工艺.
  • 氨酸模板的化用Fréchet类型的树枝.
  • 使用格拉布斯催化剂进行交叉链接的环闭转化.
  • 用水解法去除模板以生成印记站点.
  • 紫外线可见光谱测定定位和尺寸排除色谱用于约束性研究.

主要成果:

  • 通过树突细胞交叉链接成功合成了两种类型的合成宿主.
  • 实现了印制结合点的高产量.
  • 对于能够形成至少四个键的氨酸具有很高的选择性.

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Sample Preparation Method of Scanning and Transmission Electron Microscope for the Appendages of Woodboring Beetle
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Biomimetic Replication of Root Surface Microstructure using Alteration of Soft Lithography
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Last Updated: Jul 7, 2026

Label-free in situ Imaging of Lignification in Plant Cell Walls
07:35

Label-free in situ Imaging of Lignification in Plant Cell Walls

Published on: November 1, 2010

Sample Preparation Method of Scanning and Transmission Electron Microscope for the Appendages of Woodboring Beetle
10:09

Sample Preparation Method of Scanning and Transmission Electron Microscope for the Appendages of Woodboring Beetle

Published on: February 3, 2020

Biomimetic Replication of Root Surface Microstructure using Alteration of Soft Lithography
05:53

Biomimetic Replication of Root Surface Microstructure using Alteration of Soft Lithography

Published on: August 5, 2020

  • 观察到对结合氨酸的适度形状选择性.

    • 结论:

    • 开发的混合共价-非共价印记策略有效地在树枝状体中创建了选择性氨酸结合位.
    • 这些合成宿主在需要对氨酸分子进行选择性识别的应用中表现有前途.
    • 进一步改进可以提高形状选择性,用于更广泛的分子识别应用.