化学修饰

植物基因组DNA序列经常会出现胞嘧啶碱基加一个甲基的化学修饰，即DNA胞嘧啶甲基化。

Cytosine often has a chemical modification in plant genomic DNA sequence . That is the DNA cytosine methylation .

阴离子对γ-Al2O3外表面的化学修饰

Anion to the Chemical Modification Of External Surface of γ - Al_2O_3

骨蛋白也会受AGE化学修饰的影响。

Bone proteins are also affected by AGE modification .

C（60）化学修饰的PMMA的合成与表征

Synthesis and Characterization of C_ ( 60 ) Chemically Modified PMMA

DNA共价结合在化学修饰云母片上的AFM研究

AFM Studies on DNA Covalently Immobilized on Mica Modified by APTES-GA

化学修饰GOD传感器

Chemically Modified GOD Sensor

表面化学修饰由傅里叶变换红外光谱仪（FTIR）进行确定；

The surface chemical modification was confirmed by the FTIR spectroscopy studies .

天然产物LC微乳剂配方筛选及其活性成分的化学修饰研究

Study on Micro-emulsion of Natural Product LC and Chemically Modified

纳米六氰合铁酸铜化学修饰丝网印刷电极对H2O2电催化性能的研究

Electrocatalysis of Hydrogen Peroxide at a Screen Printed Electrode Modified by Titanic Sol-gel Doping with Copper Hexacyanoferrate Nanoparticles

本文主要工作是找到富勒烯化学修饰的三种新方法，合成了几类新型的富勒烯衍生物以及研究了C（70）单加成反应的区域选择性。

In this dissertation , we synthesized three types of new fullerene derivatives and investigated the regioselectivity of the mono-addition reactions of C_ ( 70 ) .

综述近期本课题组有关DNA在化学修饰电极上的电化学行为、识别和检测方面的工作。

Research works on DNA electrochemical behaviors , recognition and detection on the chemically modified electrodes which were done in our group were reviewed .

因此，本研究采用聚乙二醇（PEG）化学修饰的方法来克服白细胞介素-2的这些缺点。

Our research is about chemically modifying rhIL-2 with polyethylene glycol ( PEG ) .

染色质重塑主要包括2种类型：一种是依赖ATP的物理修饰，另一种是依赖共价结合反应的化学修饰。

Chromatin remodeling is achieved through ATP dependent physical modifications and covalent chemical reactions .

首先，用PEG对玉米SOD进行了化学修饰。

SOD was modified with PEG .

并研究了木犀草素Zn（II）和木犀草素Cu（II）配合物化学修饰碳糊电极在pH5B-R缓冲溶液中的电化学行为。

Meanwhile , The electrochemical properties of their modified carbon paste electrodes were tested in pH 5 B-R buffer solution .

其他的工作集中在组蛋白乙酰化，这种化学修饰可以使DNA从组蛋白缠绕中解离出来，产生基因活性。

Other work has focused on histone acetylation , a chemical modification that unwinds DNA from protein spools called histones , thereby enabling gene activity .

纳米Ag2O2-PbO2化学修饰电极对大肠杆菌细胞膜壁和DNA损伤的研究

Studies on Nano Ag_2O_2-PbO_2 Modified Electrode-induced Cell Membranes and DNA Damage of E.coli

TiO2/SiO2的表面化学修饰及其DRS和Raman光谱分析

The Study on DRS and Raman Spectroscopy of Surface Modified TiO_2 / SiO_2

Rh血型的分析与化学修饰

Rh Blood Group Analyses and Chemical Modification

为此，本课题对天然的HA采用了离子交联法和共价键交联法进行了化学修饰，目的是延长HA在体内的滞留时间，并对两种交联方法进行了对比实验研究。

So natural HA is chemically modified in the study and the methods include ion cross-linking and covalent bond cross-linking .

DNA甲基化是表遗传学上研究最深入的一种机制，是一种酶介导的化学修饰过程，在DNA的某些碱基上增加一个甲基。

DNA methylation , the best understood mechanism in epigenetics , is an enzyme mediated chemical modification that adds methyl ( CH3 ) groups at selected sites on DNA .

目的研究化学修饰剂对N乙酰氨基葡萄糖转移酶Ⅲ和Ⅴ活性的影响以探讨这两种酶的必需基团。

Objective : The effects of the chemical modifiers on N acetylglucosaminyltransferase ( GnT ) ⅲ and V activities were studied to learn the essential groups of the enzymes .

这三类SOD都催化超氧化物自由基O2-发生歧化反应。对酶化学修饰及热处理的结果表明两活性变化趋势一致。

All the SODs catalyse O2 - dismutation reaction . These results show that the dismutation activity is crucial for the supercoiled DNA-cleavage .

22种海水鱼中ACEI的制备及其化学修饰

Preparation and modification of ACEI from 22 species of sea fishes

在植物和动物中，基因表达能够通过非DNA自身，而是通过与DNA相互作用的DNA或组蛋白的化学修饰的变化来改变基因表达。

In plants and animals , gene expression can be altered by changes not to DNA itself but rather chemical modifications either to DNA or to histones that interact with DNA .

Nafion化学修饰电极电位溶出法测定痕量Bi（Ⅲ）的研究

Determination of Trace Bismuth (ⅲ) in Waters by Potentiometric Stripping Analysis with a Chemically Modified Nafion Electrode

用甘氨酸甲酯对抗冻多肽B的羧基进行了化学修饰的动力学研究，表明羧基为其活性功能团，其三个二次羧基中仅有一个是必需基团。

Kinetic studies on chemical modification of the carboxyl groups indicate that only one out of the three COOH side chains was found to be essential for the activity of AFP-B of Winters Flounder .

Ni-Ti合金表面化学修饰钙磷层的表面特性

Surface Properties of Bioactive Ca-P Coating on Ni-Ti Alloy by Chemical Modification

阳离子染料－蒙脱石化学修饰电极的电化学性质&与Nafion膜化学修饰电极的比较

Electrochemical Properties of Cationic Dye-Clay Modified Electrode ── Comparison with Nafion Polymer Film Modified Electrode

方法：观察同位素标记化学修饰LDL在SR－AI／I基因敲除和正常小鼠血浆的清除率和同位素标记的LDL在体内主要器官的分布。

METHOD : To observe the clearance rate of modified LDL in the plasma of SR-AI / II knockout and control mice .