charged polar amino acid

简明释义

带电极性氨基酸

英英释义

例句

1.In protein structure, the presence of a charged polar amino acid 带电极性氨基酸 can significantly affect the stability of the protein.

在蛋白质结构中，带电极性氨基酸的存在可以显著影响蛋白质的稳定性。

2.In enzyme active sites, charged polar amino acids 带电极性氨基酸 can interact with substrates to facilitate chemical reactions.

在酶的活性位点，带电极性氨基酸可以与底物相互作用以促进化学反应。

3.Mutations that replace charged polar amino acids 带电极性氨基酸 with non-polar ones can disrupt protein function.

将带电极性氨基酸替换为非极性氨基酸的突变可能会破坏蛋白质功能。

4.During the folding process, charged polar amino acids 带电极性氨基酸 play a crucial role in forming ionic bonds.

在折叠过程中，带电极性氨基酸在形成离子键方面起着至关重要的作用。

5.The solubility of proteins in water often depends on the number of charged polar amino acids 带电极性氨基酸 present.

蛋白质在水中的溶解度通常取决于存在的带电极性氨基酸的数量。

作文

Amino acids are the building blocks of proteins, and they play a crucial role in various biological processes. Among the twenty standard amino acids, some are classified as polar and charged, which significantly influences their behavior and function in proteins. One such category is known as charged polar amino acids, or in Chinese, 带电极性氨基酸. These amino acids have side chains that can either gain or lose protons, leading to a net positive or negative charge at physiological pH. This property allows them to interact with water and other polar molecules, making them essential for protein structure and function.The two main categories of charged polar amino acids are basic and acidic amino acids. Basic amino acids, which include lysine, arginine, and histidine, possess positively charged side chains. Their positive charge allows them to participate in ionic interactions and hydrogen bonding, facilitating various biological functions such as enzyme activity and substrate binding. For instance, lysine plays a vital role in the structure of histones, which are proteins that help package DNA in the nucleus. The positive charge of lysine allows it to interact with the negatively charged phosphate groups of DNA, helping to stabilize the structure of chromatin.On the other hand, acidic amino acids like aspartic acid and glutamic acid have negatively charged side chains. These amino acids are crucial for various cellular processes, including neurotransmission and metabolism. The negative charge on their side chains enables them to participate in ionic bonds and electrostatic interactions, which are fundamental for protein folding and stability. For example, glutamic acid is known to be involved in synaptic transmission in the brain, acting as an excitatory neurotransmitter that helps relay signals between neurons.The presence of charged polar amino acids 带电极性氨基酸 in proteins also affects their solubility. Proteins containing a higher proportion of these amino acids tend to be more soluble in aqueous environments due to their ability to interact favorably with water molecules. This property is particularly important for enzymes and transport proteins that must function in the watery environments of cells. Additionally, the distribution of charged polar amino acids on the surface of proteins can influence their interactions with other biomolecules, such as substrates, inhibitors, or other proteins, thereby affecting their overall functionality.Moreover, the study of charged polar amino acids 带电极性氨基酸 extends beyond basic biology; it has significant implications in biotechnology and medicine. Understanding how these amino acids interact within proteins can lead to advancements in drug design, where targeting specific interactions can enhance therapeutic efficacy. For instance, many drugs are designed to mimic the interactions of charged polar amino acids with their target proteins, improving binding affinity and specificity.In conclusion, charged polar amino acids 带电极性氨基酸 are essential components of proteins that contribute to their structure, function, and interactions within biological systems. Their unique properties allow them to participate in critical biochemical processes, influencing everything from enzyme activity to signal transduction. As research continues to unveil the complexities of protein interactions, the importance of understanding these amino acids cannot be overstated. They are not just mere building blocks; they are fundamental players in the intricate dance of life at the molecular level.