色氨酸

In this paper hIL-3 mutants hIL-3K116V and hIL-3K116W with substitutions at residue 116 lysine respectively by valine and tryptophan were generated by site-directed mutagenesis.

本文通过定点突变的方法使IL-3的第116位的赖氨酸分别被缬氨酸和色氨酸取代，获得了hIL-3的突变体hIL-3K116V和hIL-3K116W。

RESULTS The SOD activity had linear correlation with pH in the range of pH 2.2-8.0 when SOD concentration was fixed. The varication of activity after ultrosonication had linear correlcation with fluoresent intensity at 340 nm. With increase of uhtrosonic frequency, the microenviroment of tyrosine and tryptophan inside the SOD molecule was changed, then the balance of hydrophokicity and hydrophilicity inside the molecule was broken, this induced the blue shift of synchronous spectrum band and decrease of SOD activity.

结果 SOD浓度一定、pH2.2~8.0时，活性与其线性相关，超声后活性差值与340 nm荧光强度差值的线性相关；随着超声次数的增加，蛋白质SOD分子内部的酪氨酸、色氨酸所处的微环境被扰动，打破了分子内部的疏水和亲水平衡，使蛋白质的活性降低，在荧光检测中观察到普通荧光谱带蓝移，同步荧光的荧光峰位总体呈现峰位蓝移和强度下降。

Among 21 kinds of aminophenol, 7 kinds are necessary aminophenol. They are Lysine, valine, leuine, lieine,serine,phenylalanine and tryptophan.

在21种天然氨基酸中有7种是必需氨基酸，分别是赖氨酸、缬氨酸、亮氨酸、异亮氨酸、丝氨酸、苯丙氨酸、色氨酸。

3 Effects of zinc levels on endogenous hormone and nitrogen metabolism in leaves of balsam pear The results showed that zinc application could increase IAA, GA〓, protein, nuclear contents and NRase activity, but decrease tryptophane, nitric nitrogen , free ammonic acids contents and RNase activity in leaves of plants.

1.3 锌对苦瓜叶片内源激素与氮代谢的影响结果表明：施锌可提高叶片吲哚乙酸、赤霉素、蛋白质、核酸含量以及硝酸还原酶活性；降低色氨酸、游离氨基酸和NO〓含量以及RNase活性。

The results indicated that 93% of the L-tryptophan was derived from exogenous anthranilic acid.

结果表明，93％外加的邻氨基苯甲酸，被转化为15NL-色氨酸。

In order to ensure efficient use of the nitrogen source compounds, the metabolic flux of elemental nitrogen was analyzed for L-tryptophan biosynthesis using the 15N anthranilic acid as a tracer in the experimental process.

为了有效的利用含氮的化合物，实验过程中，采用15N标记的邻氨基苯甲酸为示踪剂，分析了N元素在15NL-色氨酸合成过程中的代谢通量。

Part 7 is the conclusion of this paper.The main research in this paper includes:1 The 22 mixed ligand complexes were synthesized in which bipyridine-, phenanthroline 5-nitrophenanthroline , phenanthroline- 5,6-dikentone and biquinoline are the first ligand and chlorine ion phenylalanine, tyosine asparagic radical 2.6-diaminocaproic radical tryptophan , histidine malonate(mal2-) benzyl malonate (bmal2-) phenethtyl malonate (pmal2-) are the second ligand.

本文具体研究内容包括四部分：一、合成了以联吡啶、邻菲啰啉、5—硝基邻菲啰啉、邻菲啰啉-5，6-二酮、联喹啉为第一配体，以Cl~-、苯丙氨酸根、酪氨酸根、天冬氨酸根asp~(2-、赖氨酸根、色氨酸根、组氨酸根、丙二酸根mal~(2-、苄基丙二酸根bmal~(2-和苯乙基丙二酸根pmal~(2-为第二配体的共22个混配配合物，制备了其中6个混配配合物和1个单配体配合物单晶，用X-射线单晶衍射法测定了晶体结构。

The composition of amino acid of the enzyme was also analyzed,which indicated that the contents of asparaginic acid, serine, glutamic acid, glycin, alanine are the most, lysine, histidine also have high contents and there are a few praline, tryptophan.

最后，对此酶的氨基酸成分进行了分析，结果表明，此酶分子中天冬氨酸、丝氨酸、谷氨酸、甘氨酸、丙氨酸含量高，两种碱性氨基酸精氨酸、赖氨酸及组氨酸的含量也比较高，而脯氨酸、色氨酸的含量相对较低。

Trp in a protein can be replaced by its analogs by biosynthetic incorporation technique.

利用生物合成的办法，可以在蛋白质的色氨酸位点引入它的类似物。

The Cry1Ac5 domainⅢhas a distant relationship with other Cry1 proteins and its longβ18-β19 loop possesses a unique tryptophanat residue 544 and a unique asparagineat the loop apex(residue 546),as well as two consecutive serinesfrom residue 547 to 548.Alanine scanning mutations within the loop were initially generated and all mutants could produce bipyramidal crystals and express 130 kDa protoxins.

利用Swiss-Model服务器和Swiss-pdb Viewer软件建立了Cry1Ac5蛋白的三维结构模型，并利用Clustal W和DS ViewerPro软件对比分析了其与其它Cry蛋白之间的差异，发现Cry1Ac5的结构域Ⅲ与其它Cry1蛋白的亲缘关系较远，其结构域Ⅲ上的β18-β19 loop比Cry1Aa、Cry2Aa、Cry3Aa和Cry4Aa蛋白对应的loop长，其组成的残基中色氨酸(W544)、连续的丝氨酸(S547、S548)和loop顶点的天冬酰氨(N546)在Cry蛋白中都是独特的残基分子成分。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。