zwitter ion

简明释义

两性离子

英英释义

例句

1.A zwitter ion is a molecule that has both positive and negative charges, making it neutral overall.

双电离子是指一种既带有正电荷又带有负电荷的分子，从而整体上呈中性。

2.The zwitter ion structure allows for better solubility in water compared to neutral molecules.

双电离子结构使其在水中的溶解度比中性分子更好。

3.In amino acids, the presence of a zwitter ion form is crucial for their biological function.

在氨基酸中，双电离子形式的存在对其生物功能至关重要。

4.When dissolved in solution, amino acids often exist as zwitter ions at physiological pH.

当溶解在溶液中时，氨基酸通常在生理pH下以双电离子形式存在。

5.The study of zwitter ions is important in understanding protein folding and stability.

研究双电离子对于理解蛋白质折叠和稳定性非常重要。

作文

In the fascinating world of chemistry, one term that often arises is zwitter ion. A zwitter ion is a molecule that contains both positive and negative charges but is overall electrically neutral. This unique characteristic makes zwitter ions particularly important in various biochemical processes. For instance, amino acids, the building blocks of proteins, exist as zwitter ions in physiological conditions. Each amino acid has an amine group (-NH2) that can accept a proton, becoming positively charged, and a carboxyl group (-COOH) that can donate a proton, becoming negatively charged. When these groups are ionized, the amino acid exists as a zwitter ion, which allows it to interact effectively with other molecules in biological systems.The presence of zwitter ions in biological systems plays a crucial role in maintaining the structure and function of proteins. Proteins are composed of long chains of amino acids linked by peptide bonds, and the zwitter ion form of amino acids contributes to the overall stability of these proteins. The ability of zwitter ions to engage in ionic interactions with surrounding molecules helps proteins fold into their functional three-dimensional shapes. This folding is essential for the activity of enzymes, hormones, and other proteins that perform vital functions in living organisms.Moreover, zwitter ions are also significant in the field of pharmaceuticals. Many drugs are designed to mimic the structure of amino acids or to interact with zwitter ions in the body. By understanding how zwitter ions behave in different environments, chemists can develop more effective medications that target specific biological pathways. For example, the solubility and permeability of drugs can be influenced by their ionic forms, making the study of zwitter ions critical in drug design and formulation.In addition to their biological relevance, zwitter ions are also found in various industrial applications. Surfactants, which are compounds that lower the surface tension between two liquids, often contain zwitter ions. These surfactants are used in detergents, cosmetics, and food products, highlighting the versatility of zwitter ions beyond the realm of biochemistry. Their ability to stabilize emulsions and foams makes them invaluable in formulating products that require a balance of hydrophilic and hydrophobic properties.In conclusion, zwitter ions are not just a niche concept in chemistry; they are fundamental to our understanding of biological systems, drug development, and industrial applications. By recognizing the importance of zwitter ions, we can appreciate the intricate ways in which molecular interactions shape the world around us. As research continues to explore the properties and behaviors of zwitter ions, we may uncover even more applications and insights that could benefit various fields, from medicine to environmental science. Understanding zwitter ions is essential for anyone interested in the complexities of chemistry and its practical implications in our daily lives.

在化学的迷人世界中，一个常常出现的术语是双性离子。双性离子是指一种分子，它同时具有正电荷和负电荷，但整体上是电中性的。这种独特的特性使得双性离子在各种生化过程中尤为重要。例如，氨基酸是蛋白质的构建块，在生理条件下以双性离子的形式存在。每个氨基酸都有一个氨基（-NH2）可以接受质子而变为带正电荷，以及一个羧基（-COOH）可以释放质子而变为带负电荷。当这些基团被电离时，氨基酸就以双性离子的形式存在，这使其能够与生物系统中的其他分子有效互动。双性离子在生物系统中的存在对于维持蛋白质的结构和功能起着至关重要的作用。蛋白质由长链氨基酸通过肽键连接而成，而氨基酸的双性离子形式有助于这些蛋白质的整体稳定性。双性离子能够与周围分子进行离子相互作用，帮助蛋白质折叠成其功能性三维形状。这种折叠对于酶、激素和其他在生物体内执行重要功能的蛋白质的活性至关重要。此外，双性离子在制药领域也具有重要意义。许多药物的设计旨在模拟氨基酸的结构或与体内的双性离子相互作用。通过了解双性离子在不同环境中的行为，化学家可以开发出更有效的药物，以针对特定的生物途径。例如，药物的溶解度和通透性可能受到其离子形式的影响，使得研究双性离子在药物设计和配方中至关重要。除了生物相关性，双性离子还广泛应用于各种工业领域。表面活性剂是降低两种液体之间表面张力的化合物，通常含有双性离子。这些表面活性剂用于清洁剂、化妆品和食品产品，突显了双性离子在生物化学之外的多样性。它们能够稳定乳液和泡沫，使其在需要亲水性和疏水性特性平衡的产品配方中不可或缺。总之，双性离子不仅仅是化学中的一个小众概念；它们是我们理解生物系统、药物开发和工业应用的基础。通过认识到双性离子的重要性，我们可以欣赏分子相互作用塑造我们周围世界的复杂方式。随着研究继续探索双性离子的性质和行为，我们可能会发现更多的应用和见解，这些见解将惠及各个领域，从医学到环境科学。理解双性离子对于任何对化学复杂性及其在日常生活中的实际影响感兴趣的人来说都是必不可少的。