peptide

简明释义

英[ˈpeptaɪd]美[ˈpeptaɪd]

n. 肽

英英释义

单词用法

同义词

反义词

例句

1.The DYKDDDDK peptide has been used extensively as a general epitope tag in expression vectors.

DYKDDDDK肽作为一个普通的附加表位广泛地应用于表达载体中。

2."Peptide molecular medicine is a very hot area, and this concept of stapled peptides is a new area of great promise," he said.

肽类药物是个非常热门的领域。钉肽的概念是一个有巨大潜力的新领域。

3.Objective Verifying moisturizing function of fish collagen peptide through surface and vitro test.

目的：通过体表和体外实验验证鱼胶原肽的保湿功能。

4.Experimental work shows that about one random peptide in a million can bind to a given molecular target.

实验工作表明，每大约一百万个随机的肽里，就有一个可以绑定一个特定的分子靶。

5.A peptide is a short chain of the amino-acid molecules that are the ultimate components of proteins.

一个缩氨酸是一个短链的氨基酸分子，而氨基酸是最终形成蛋白质的分子。

6.The design synthesis and applications of cyclic peptide compounds were discussed in this article.

本文介绍了近年来环肽化合物的合成及其应用的一些进展。

7.In contrast, the nonenzymatic process adds glucose haphazardly to any of several sites along any available peptide chain within a protein molecule.

相反，非酶法过程中，葡萄糖被随意地添加到蛋白质分子中任意肽链的随意几个位置。

8.In biotechnology, peptides are often used as drugs to treat various diseases.

在生物技术中，肽常用于治疗各种疾病的药物。

9.This peptide has been shown to have anti-inflammatory properties.

这种肽已被证明具有抗炎特性。

10.The peptide sequence is crucial for its biological activity.

该肽序列对其生物活性至关重要。

11.The scientist synthesized a new peptide that could improve muscle recovery.

科学家合成了一种新的肽，可以改善肌肉恢复。

12.Researchers are studying the effects of peptides on skin aging.

研究人员正在研究肽对皮肤衰老的影响。

作文

Peptides are fundamental molecules in the field of biochemistry and molecular biology. A peptide is a short chain of amino acids linked by peptide bonds. These bonds form when the carboxyl group of one amino acid reacts with the amino group of another, releasing a molecule of water in the process. This reaction is known as a condensation reaction. Peptides can range from just two amino acids to several dozen, and they play critical roles in various biological functions. The study of peptides has gained significant attention due to their diverse functions in the body. For instance, many hormones, such as insulin, are actually peptides. Insulin, which regulates blood sugar levels, is composed of 51 amino acids and is essential for glucose metabolism. Similarly, neurotransmitters like oxytocin and vasopressin are also peptides, playing key roles in communication between nerve cells and regulating various physiological processes.In addition to their hormonal and neurotransmitter functions, peptides are involved in immune responses. Certain peptides, known as antimicrobial peptides, can destroy bacteria and fungi, making them crucial for the immune system's defense against infections. Research into these peptides has opened new avenues for developing antibiotics, especially in an era where antibiotic resistance is becoming a significant global health concern.Moreover, peptides are being explored for their therapeutic potential in treating various diseases. For example, cancer therapies often utilize peptides that can specifically target cancer cells while sparing healthy cells. This specificity is vital for minimizing side effects and improving treatment efficacy. Furthermore, peptides have been investigated for their role in wound healing and tissue regeneration, showcasing their versatility in medical applications.The synthesis of peptides is another area of great interest. Advances in peptide synthesis techniques, such as solid-phase peptide synthesis (SPPS), have made it possible to produce synthetic peptides efficiently. This capability allows researchers to create customized peptides for specific experiments or therapeutic uses. As a result, the demand for synthetic peptides in research and pharmaceuticals is on the rise.Furthermore, the field of proteomics, which studies the structure and function of proteins, heavily relies on understanding peptides. Since proteins are made up of long chains of amino acids, breaking them down into smaller peptides can provide insights into their function and interactions within biological systems. Techniques such as mass spectrometry are commonly used to analyze peptides and determine their sequences, which is crucial for understanding protein functions in health and disease.In conclusion, peptides are not merely small fragments of proteins; they are vital components of biological systems with diverse roles in regulation, signaling, and defense. The ongoing research into peptides continues to unveil their potential in medicine, biotechnology, and beyond. As our understanding of peptides deepens, we can anticipate exciting developments that may lead to novel treatments and improved health outcomes for many conditions. Understanding the significance of peptides is essential for anyone interested in the life sciences, as they represent a bridge between simple amino acid sequences and complex biological functions.

肽是生物化学和分子生物学领域的基本分子。肽是一种由氨基酸通过肽键连接而成的短链。这些键是在一个氨基酸的羧基与另一个氨基酸的氨基反应时形成的，在这个过程中释放出一分子水。这种反应被称为缩合反应。肽的长度可以从仅两个氨基酸到几十个不等，它们在各种生物功能中起着关键作用。由于其在体内的多种功能，肽的研究引起了广泛关注。例如，许多激素，如胰岛素，实际上就是肽。胰岛素由51个氨基酸组成，对于葡萄糖代谢至关重要。同样，神经递质如催产素和抗利尿激素也属于肽，在神经细胞之间的通信和调节各种生理过程方面发挥着关键作用。除了激素和神经递质的功能外，肽还参与免疫反应。某些肽，称为抗菌肽，可以破坏细菌和真菌，使它们在免疫系统对抗感染的防御中至关重要。对这些肽的研究打开了开发抗生素的新途径，特别是在抗生素耐药性成为全球健康重大问题的时代。此外，肽在治疗各种疾病中的潜在应用也备受关注。例如，癌症疗法常常利用能够特异性靶向癌细胞而不损伤健康细胞的肽。这种特异性对于减少副作用和提高治疗效果至关重要。此外，肽在伤口愈合和组织再生中的作用也得到了研究，展示了它们在医学应用中的多样性。肽的合成也是一个备受关注的领域。肽合成技术的进步，例如固相肽合成（SPPS），使得高效生产合成肽成为可能。这种能力使研究人员能够为特定实验或治疗用途创建定制的肽。因此，合成肽在研究和制药中的需求正在上升。此外，蛋白质组学领域，即研究蛋白质的结构和功能，严重依赖于对肽的理解。由于蛋白质是由长链氨基酸组成的，将它们分解成更小的肽可以提供对其功能和在生物系统中相互作用的见解。质谱等技术通常用于分析肽并确定其序列，这对于理解健康和疾病中的蛋白质功能至关重要。总之，肽不仅仅是蛋白质的小片段；它们是生物系统的重要组成部分，在调节、信号传递和防御中发挥着多种作用。对肽的持续研究不断揭示它们在医学、生物技术及其他领域的潜力。随着我们对肽理解的加深，我们可以期待令人兴奋的发展，这可能会导致新疗法的出现，并改善许多疾病的健康结果。理解肽的重要性对于任何对生命科学感兴趣的人来说都是必不可少的，因为它们代表了简单氨基酸序列与复杂生物功能之间的桥梁。