侧链和环形尺寸对人工水道透性的影响
Tyler J Duncan1, Harekrushna Behera2, Michael F Meng1
1McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States.
The journal of physical chemistry. B
|January 2, 2025
概括
合物附加柱[n] (LAPs) 显示可调节的水透性. 增加侧链长度通过改变孔径大小和水线相互作用来增强水运输,而更大的环形大小会降低透性.
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
- 计算化学的计算化学
背景情况:
- 人工水道 (AWC) 提供稳定的水透率,与水相似.
- 连接体附着柱[n] (LAP) 是AWC的一类,具有可调节的环大小 (m) 和侧链长度 (n).
研究的目的:
- 调查 LAP 中环形尺寸和侧链长度如何影响水的透性.
- 阐明这些AWC中管理水运输的机制.
主要方法:
- 用全原子分子动力学模拟来计算通道透率.
- 集体扩散模型被用来分析水运.
- 分析的重点是内部水线特性和周围的通道结构.
主要成果:
- 由于增强的水友互动,随着柱子[n]arene环大小的增加,水的透性会降低.
- 水的透性随着侧链长度的增加而增加,这是由终端组划分为水友性块所驱动的.
- 对于LAP6,较长的侧链增加了孔隙大小和水透性.
- 对于LAP5,灵活的侧链增强了水线长度和水友性块的访问,克服了非单调的孔径大小趋势.
结论:
- 环尺寸和侧链长度是调整AWC水透性的关键参数.
- 侧链的长度通过对孔径大小,水线结构和双层相互作用的影响对水运输产生重大影响.
- 地方水道提供了一个有前途的平台,用于设计高效的人工水道.
更多相关视频
09:54Multifunctional, Micropipette-based Method for Incorporation And Stimulation of Bacterial Mechanosensitive Ion Channels in Droplet Interface Bilayers
Published on: November 19, 2015
10.8K
11:55Membrane Transport Processes Analyzed by a Highly Parallel Nanopore Chip System at Single Protein Resolution
Published on: August 16, 2016
11.7K
相关概念视频
01:25Aquaporins
4.8K
Aquaporins or AQPs are a family of integral membrane proteins whose primary function is to transport water, while some called aquaglyceroporins also transport glycerol. In addition, aquaporins have also been suspected to be involved in transporting volatile substances, such as carbon dioxide and ammonia, across membranes. Such AQPs that act as gas channels are often highly expressed in cells involved in the gaseous exchange, such as red blood cells, epithelial cells, and pulmonary capillaries.
4.8K
01:09Multi-pass Transmembrane Proteins and β-barrels
5.2K
In multi-pass transmembrane proteins, the polypeptide chain crosses the membrane more than once. The transmembrane polypeptide chain either forms an α-helix or β-strand structure. α-Helix containing multi-pass transmembrane proteins are ubiquitous, whereas β-strand containing ones are mainly found in gram-negative bacteria, mitochondria, and chloroplasts.
α-Helix containing multi-pass transmembrane proteins
Multi-pass transmembrane proteins such as...
α-Helix containing multi-pass transmembrane proteins
Multi-pass transmembrane proteins such as...
5.2K