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相关概念视频

Aquaporins01:25

Aquaporins

4.9K
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.
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Ligand Binding Sites02:40

Ligand Binding Sites

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Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
12.9K
Intermolecular Forces03:13

Intermolecular Forces

58.7K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
58.7K
Water: A Bronsted-Lowry Acid and Base02:30

Water: A Bronsted-Lowry Acid and Base

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The reaction between a Brønsted-Lowry acid and water is called acid ionization. For example, when hydrogen fluoride dissolves in water and ionizes, protons are transferred from hydrogen fluoride molecules to water molecules, yielding hydronium ions and fluoride ions:
50.7K
Pore Transport and Ion-Pair Transport01:17

Pore Transport and Ion-Pair Transport

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Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited  but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...
513
Solubility Equilibria: Ionic Product of Water01:16

Solubility Equilibria: Ionic Product of Water

1.0K
Pure water is a weak electrolyte; only a small amount ionizes into hydrogen and hydroxide ions. At any given temperature, the concentration of undissociated water is almost constant, so the ionic product of water is the product of the hydrogen and hydroxide ion concentrations, denoted as Kw. The square root of Kw gives the individual ion concentrations.
The ionic product of water varies with temperature, and its value is 1.0 x 10−14 at standard experimental conditions. Per Le...
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相关实验视频

Updated: Jul 19, 2025

Measuring Cation Transport by Na,K- and H,K-ATPase in Xenopus Oocytes by Atomic Absorption Spectrophotometry: An Alternative to Radioisotope Assays
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Measuring Cation Transport by Na,K- and H,K-ATPase in Xenopus Oocytes by Atomic Absorption Spectrophotometry: An Alternative to Radioisotope Assays

Published on: February 19, 2013

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大离子在水中结合.

Khaleel I Assaf1,2, Werner M Nau1

  • 1Constructor University, School of Science, Campus Ring 1, 28759 Bremen, Germany. wnau@constructor.university.

Organic & biomolecular chemistry
|August 7, 2023
PubMed
概括
此摘要是机器生成的。

大型,水溶性离子表现出强烈的结合与宏环宿主由于 chaotropic 效应,一个强大的力量在水性超分子化学. 这种相互作用推动了分子识别及其他领域的新型应用.

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In Situ Characterization of Hydrated Proteins in Water by SALVI and ToF-SIMS
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In Situ Characterization of Hydrated Proteins in Water by SALVI and ToF-SIMS

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Ion Mobility-Mass Spectrometry Techniques for Determining the Structure and Mechanisms of Metal Ion Recognition and Redox Activity of Metal Binding Oligopeptides
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Ion Mobility-Mass Spectrometry Techniques for Determining the Structure and Mechanisms of Metal Ion Recognition and Redox Activity of Metal Binding Oligopeptides

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相关实验视频

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Measuring Cation Transport by Na,K- and H,K-ATPase in Xenopus Oocytes by Atomic Absorption Spectrophotometry: An Alternative to Radioisotope Assays
12:48

Measuring Cation Transport by Na,K- and H,K-ATPase in Xenopus Oocytes by Atomic Absorption Spectrophotometry: An Alternative to Radioisotope Assays

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In Situ Characterization of Hydrated Proteins in Water by SALVI and ToF-SIMS
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In Situ Characterization of Hydrated Proteins in Water by SALVI and ToF-SIMS

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Ion Mobility-Mass Spectrometry Techniques for Determining the Structure and Mechanisms of Metal Ion Recognition and Redox Activity of Metal Binding Oligopeptides
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Ion Mobility-Mass Spectrometry Techniques for Determining the Structure and Mechanisms of Metal Ion Recognition and Redox Activity of Metal Binding Oligopeptides

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科学领域:

  • 超分子化学 超分子化学
  • 物理化学 物理化学
  • 化学生物学 化学生物学

背景情况:

  • 具有杂热性质的大型水溶性离子与恐水环境具有显著的相互作用.
  • 混沌效应是一个关键的驱动力,在水系统中经常被低估.
  • 这些离子与宏循环受体,聚合物,生物膜和接口相互作用.

研究的目的:

  • 审查大型离子与水溶性宏循环宿主的结合.
  • 要突出混沌效应在这些相互作用中的作用.
  • 以展示由高亲和度离子结合驱动的新应用.

主要方法:

  • 关于超分子相互作用的文献综述.
  • 对阳离子和宏环受体之间的结合亲缘关系的分析.
  • 讨论混沌效应的贡献.

主要成果:

  • 具有杂热性质的大离子强烈地与水中的宏循环宿主结合.
  • 混乱效应是一个重要的,经常被低估的驱动力.
  • 高亲和度结合导致了各种新的应用.

结论:

  • 混热效应显著增强了大型离子与水中的宏环受体的结合.
  • 了解这种效应可以为设计新的宿主-客客系统打开道路.
  • 应用范围从分子识别到先进材料.