肽键

在宿主蛋白质的成熟过程中，蛋白质内含子可以催化自身从蛋白质前体中剪切下来，同时将两侧的外显子以肽键连接，这种蛋白质翻译后的成熟过程称为蛋白质剪接（proteinsplicing）。

Intein able to catalyze self-splicing from the precursor protein and the exteins were ligated with a peptide bond . This post-translation process was termed protein splicing .

H3氨基端的修饰同样也包括其残基的肽键被水解而切割。

H3 N-tail modifications also include cleavage of its peptide bond by amide hydrolysis .

随着X-ray和NMR等实验手段分辨率的提高，含顺式肽键单元的蛋白质数目也随之增加。

More and more proteins containing cis peptide bonds have been found with the increasing resolution of X-ray and NMR experiments .

在氧化重折叠反应液中加入还原剂二硫苏糖醇（DTT）后，不但没有分子间二硫键形成，也没有异肽键形成。

No dimmers / oligomers were detected when the refolding and unfolding solution contained the reducing agent dithiothreitol ( DTT ) .

IR分析表明该物质含有肽键、内脂键及脂肪族侧链等官能团；GC-MS和PC分析表明，其疏水基半分子为β-甲基十四碳脂肪酸及β-羟基十八碳脂肪酸；

IR analysis shows that the product contains peptide bond , lactone bond , and aliphatic chain GC MS analysis indicates that hydrophobic moiety contains β methyl C 14 fatty acid and β hydroxyl C 18 fatty acid .

CasPase是近年来发现的一组存在于胞质溶胶中的结构上相关的半胱氨酸蛋白酶，它们的一个重要共同点是特异地断开天冬氨酸残基后的肽键。

CasPase-3 is a group of structure related cysteine protease that existed in the cytoplasm Sol , in which an important common ground specific is disconnect between aspartate residue peptide bond .

胰蛋白酶（Trypsin）是动物消化道中一种主要的蛋白水解酶，属于丝氨酸蛋白酶家族，能专一性水解赖氨酸或精氨酸羧基形成的肽键。

Trypsin is a kind of main alkaline proteolytic enzymes in alimentary canal . It belongs to the family of serine proteinase , and specially hydrolyzes the peptide bond formed by Lysine or Arginine .

肽键在190nm具有强的吸收带。

Polypeptide chains have strong absorption peaks at 190 nm .

对于PACC的活性，本文主要研究了PACC对磷酸酯键和肽键的水解活性。

At the same time , hydrolysis activities of PACC for phosphoester and peptide bonds are mainly studied .

另外，PACC对肽键也有较强的水解作用。

The hydrolysis activity of PACC for bovine serum albumin ( BSA ), which has peptide bonds , is good .

超高压协同HCl对胶原结构的影响主要包括松散胶原螺旋结构（破坏氢键和共价交联）、诱导胶原分子聚合以及对胶原的降解作用（破坏肽键）等三方面。

The effects of UHP cooperate with hydrochloric acid on the structure of collagen mainly include loosing helical structure by breaking the hydrogen bonds and covalent crosslinkings , inducing the collagen molecular aggregating and the degradation of collagen by breaking peptide bonds .

还原型谷胱甘肽（L-Glutathione）简称为GSH，是由谷氨酸、半胱氨酸和甘氨酸构成的三肽，其中谷氨酸是以γ-羧基与半胱氨酸形成肽键。

Reduced glutathione , abbreviated as GSH , is a tri-peptide which is made up of glutamic acid , cysteine and glycine . Among these amino acids , aminoglutaminic acid ' gamma carboxyl group and cysteine join into action to form peptide linkage .

化合物trans-formanilide是研究肽键的常用模型，又是最简单芳香类酰胺分子。

Trans-formanilide is one of the simplest aromatic amides and provides a model of the peptide bond .

每一轮反应后都使用茚三酮法检验缩合完成程度，并通过测定缩合肽链上的Fmoc基团吸光度确定肽键缩合率。

After each round of coupling we used the ninhydrin method to examine the condensation degree and determined the peptide coupling rate by measuring the absorbance of the Fmoc group .

它能直接作用于血中的纤维蛋白原，水解血液中纤维蛋白原的4个Arg-Gly肽键，产生不溶性的纤维蛋白，使血液变成凝胶而发生凝固。

It can directly act on the fibrinogen , and hydrolyzes 4 Arg-Gly peptide bond of the fibrinogen , which makes fibrinogen become to fibrin for congealing the blood .

请详细描述胜肽键的形成与其结构。

Describe peptide bond formation and its structure in great detail .

由肽键结合在一起的两个或两个以上的氨基酸。

Two or more amino acids held together by peptide bonds .

肽键的统计分析和蛋白质的二级结构

Statistical analysis of peptide correlation and prediction of protein conformation

你可以基于肽键结构推导出其它结构吗？

Can you deduce other structure formations based on the peptide bond structure ?

含有肽键连接的氨基酸的链的任何大分子。

Any large molecule containing chains of amino acids linked by peptide bonds .

麦胚凝集素亲和色谱富集糖肽过程中的肽键裂解

Cleavage of amide bond during glycopeptide enrichment using wheat germ agglutinin affinity chromatography

单个的蛋白酶对他们水解的肽键类型具高度特异性。

Individual proteases are highly specific in the type of peptide bond they hydrolyze .

胰蛋白酶作用下的酶切与偶联反应，实际是一对可逆的反应，即酶切为肽键的断裂，偶联为肽键的形成。

Actually , under the effect of trypsin , cleavage and coupling was a reversible reaction .

这些种类繁多的蛋白质和多肽，从化学结构上看，都是由氨基酸残基通过酰胺键（肽键）连接而成的。

All kinds of proteins and polypeptides are built by amino acids residues through peptide bond .

蛋白质二硫键异构酶分子间异肽键交联的研究用分子对接搭建激酶-抑制剂复合物的三维结构

Studies on Interchain Isopeptide Cross-links of Protein Disulfide Isomerase ; Exploring Kinase Inhibitors Binding Mode with Docking Method

肽键实质上具有稳定的双键特性，并且通过限制有效信息来影响蛋白质的特性。

The peptide bond has substantial rigid double-bond character and affects properties of proteins by limiting available information .

其中一条肽链中两个半胱氨酸残基横跨五个肽键生成二硫键。

And in one chain of insulin , one disulfide bond connected by cysteine across five peptide bonds .

蛋白质是一种生物大分子，是由20种氨基酸以肽键连接成肽链，在空间卷曲折叠成为特定的三维空间结构。

The protein is a kind of biological macromolecules constructed by 20 types of amino acid with peptide bond .

形成肽键的基本方法，可以活化氨基也可以活化羧基，但是迄今为止普遍使用的都是活化羧基的方法。

There are two general methods for the formation of peptide bond , i.e. amino activation or carboxylic group activation .

配位之后，羰基碳所带的正电荷增加了28.3%，使它极易受到亲核试剂（溶剂水）的进攻而使肽键发生断裂，这为钯？

, which makes it easy for the nucleophile ( solvent water ) to attack and cleave the peptide bond .