peptide bond 中文 一分子氨基酸的α-氨基与另一分子氨基酸的α-羧基脱水缩合形成的共价键 - Dehydration synthesis中文 peptide bond The Crucial Peptide Bond: The Backbone of Proteins

胺基酸 The peptide bond (also known as the peptide linkage or amide bond) is a fundamental covalent chemical bond that forms the primary linkage between amino acids.肽键（peptide bond）是由一个氨基酸的羧基与另一个氨基酸的氨基通过缩合反应脱去一分子水形成的酰胺键。西安交通大学生命科学与技术学院孙晓龙团队提出基于半胱氨酸 ... These bonds are the building blocks of peptides and, ultimately, proteins, which are essential macromolecules for all known life肽（Peptide）是由胺基酸的胺基（-NH2）和羧基（-COOH）脫水縮合形成肽鍵後，形成的鏈狀分子。 肽鍵是由一個胺基酸與次一胺基酸的胺基，行脫水縮合反應而成的-CO-NH .... Understanding the formation and properties of the peptide bond is crucial for comprehending protein structure, function, and synthesis.

Formation of the Peptide Bond:

The formation of a peptide bond occurs through a dehydration synthesis reaction. Specifically, the carboxyl group (-COOH) of one amino acid reacts with the amino group (-NH2) of another amino acid. During this process, a molecule of water is removed, and a new bond, the peptide bond (represented as -CO-NH-), is formed肽由两个或多个氨基酸通过酰胺键连接而成，形成一条氨基酸链，长度一般为2 - 70 个氨基酸。肽与蛋白质的区别在于，肽不需要折叠就能发挥生物活性。肽作为肽类激素（如血管 .... This linkage connects the two amino acid residues, creating a dipeptide.肽键（英语：Peptide bond，“肽”）是一分子氨基酸个α－羧基-COOH搭另一分子氨基酸个α－胺基-NH2脱水缩合形成个酰胺键，即-CO-NH -，为连结两单体氨基酸个共价键，氨基酸借肽键联结 ... As more amino acids link together in this manner, they form a polypeptide chain, which is the backbone of proteins.a.胜肽鍵(peptide bond) 是由一個胺基酸的酸基，與次一胺基酸的胺基，行脫水縮合反應而成的C-N 鍵，具有雙鍵的性質，與相鄰總共六個原子在同一平面上，因此C-N 鍵不能自由轉動 ... The term peptide itself refers to a molecule composed of two or more amino acids linked by peptide bonds胜肽鏈之化學合成：醯胺鍵合成及鏈結方法學之開發.

Chemical Properties and Structure:

The peptide bond is characterized by its partial double-bond character due to resonance between the carbonyl oxygen and the nitrogen atom. This resonance gives the peptide bond a planar structure and restricts rotation around the C-N bond胜肽(peptide). This planarity has significant implications for the overall three-dimensional folding of proteins泛素蛋白连接酶复合物\对通过在泛素C末端甘氨酸和蛋白质内赖氨酸残基的a-氨基之间形成1个肽键而使泛素与其它蛋白质类结合进行催化的酶复合物。. The six atoms involved in the peptide bond (the carbonyl carbon, carbonyl oxygen, amide nitrogen, amide hydrogen, and the alpha-carbons of the two adjacent amino acids) tend to lie in the same plane. This restricted rotation makes the peptide bond relatively stable and influences how polypeptide chains can fold into specific secondary structures like alpha-helices and beta-sheets.肽鍵- 自由嘅百科全書

While the peptide bond itself is quite stable, it can be hydrolyzed (broken) by enzymes called peptidases or proteases, a process essential for protein digestion and turnover.肽键是由一个氨基酸的α-羧基与另一个氨基酸的α-氨基脱水缩合形成的酰胺键，化学式为—CO—NH—，构成多肽链的主链骨架。 其形成过程涉及酰化反应，水解需蛋白酶催化，在无酶条件 ... The energy required for peptide bond formation during protein synthesis is provided by ATP (adenosine triphosphate), highlighting the energetic cost of building these vital molecules.

Significance in Biology:

The sequence of amino acids linked by peptide bonds dictates the primary structure of a protein. This sequence, in turn, determines how the protein will fold into its complex three-dimensional structure, which is directly related to its biological function. Proteins play a myriad of roles in living organisms, including catalyzing biochemical reactions (as enzymes), providing structural support, transporting molecules, and mediating cellular communication.

For instance, valine, an amino acid, has a side chain that can influence the reactivity of adjacent peptide bonds, affecting protein folding and structure. The precise arrangement of peptide bonds and the subsequent folding are critical for protein functionpeptide bond (胜肽鍵，肽鍵). Disruptions in this process can lead to misfolded proteins associated with various diseases.

Variations and Related Concepts:

While the peptide bond is the standard linkage, research continues into various aspects of peptide chemistry and synthesis肽键- 维基百科. Concepts like peptide synthesis refer to the chemical or biological processes used to create peptides and proteins.跟擷胺酸(valine)一樣，其β-分枝的側鏈也會阻礙與鄰近生肽鍵(peptide bond)的反應。 ...peptide bond）－此反應為蛋白質定序的方法。在蛋白質合成實驗中常以35S標定之 ... Understanding peptide bond formation is also relevant to the study of peptide-containing compounds and their biological activities肽键是由一个氨基酸的α-羧基与另一个氨基酸的α-氨基脱水缩合形成的酰胺键，化学式为—CO—NH—，构成多肽链的主链骨架。 其形成过程涉及酰化反应，水解需蛋白酶催化，在无酶条件 .... The term peptide bond is often used interchangeably with peptide linkage and amide bond in biological contexts. The formation of peptide bonds can be viewed as a specific type of amide bond formation.英汉-汉英词典peptide bond是什么意思

In summary, the peptide bond is the fundamental link that connects amino acids to form peptides and proteins. Its formation through dehydration synthesis, its inherent structural properties, and its role in dictating protein architecture make it a cornerstone of molecular biology and biochemistry. The stability and specific geometry of the peptide bond are critical for the formation of functional proteins, which are indispensable for life肽键是由一个氨基酸的α-羧基与另一个氨基酸的α-氨基脱水缩合形成的酰胺键，化学式为—CO—NH—，构成多肽链的主链骨架。 其形成过程涉及酰化反应，水解需蛋白酶催化，在无酶条件 ....