嘧啶二聚体

UVB对植物DNA的损伤主要是形成嘧啶二聚体。

The main form of the DNA damage induced by UVB radiation was the formation of pyrimidine dimer .

绿豆幼苗UV-B敏感性与环丁烷嘧啶二聚体累积的关系

Cyclobutyl Pyrimidine Dimer Accumulation in Ralation to UV-B Sensitivity in Mung Bean Cultivars

环丁烷型嘧啶二聚体（Pyr<>Pyr）是太阳光中紫外线造成DNA损伤的主要光化学产物。

Cyclobutane pyrimidine dimers ( Pyr < > Pyr ) are the major DNA photoproducts induced by the UV radiation .

目的研究DNA光修复酶（EC4.1.99.3）对紫外光幅射产生的嘧啶二聚体修复的作用机制。

Aim To study the mechanism of Escherichia coli DNA photolyase ( EC 4.1.99.3 ) in repairing the ultraviolet induced pyrimidine dimmer lesions in DNA .

生物体在受到紫外照射时，常因在核酸水平上形成嘧啶二聚体导致DNA的氧化性损伤，具有强烈的致死作用。

UV radiation ( UV-B , UV-C ) can induced serious damage in organism . The major damage on the nucleic acid level is DNA biologic oxidation damage : formation of pyrimidine dimmers .

目的：环丁烷嘧啶二聚体（CPDs）是细胞受紫外线损伤后产生的特征性光产物之一。

Objective Cyclobutane pyrimidine dimers ( CPDs ) are characteristic photoproducts in cells after ultraviolet irradiation .

目的观察中波紫外线（UVB）辐射后成纤维细胞（FB）DNA光产物环丁烷嘧啶二聚体（CPDs）产生和清除情况及表没食子儿茶素没食子酸酯（EGCG）和黄芩甙的干预作用。

Objective To investigate the production and removal of cyclobutane pyrimidine dimers ( CPDs ) induced by UVB irradiation and intervention effect by epigallocatechingallate ( EGCG ) in human fibroblasts .

【目的】明确绿豆品种间UV-B敏感性的差异与环丁烷嘧啶二聚体（CPDs）累积间的关系。

【 Objective 】 The purpose of the experiment is to reveal the relationship between cyclobutyl pyrimidine dimers ( CPDs ) accumulation and UV-B sensitivity in mung bean cultivars .

实验结果部分支持环丁烷嘧啶二聚体（CPD）、6-4光产物（6-4PP）和Dewar异构体的形成。

The experimental results partly supported the formation of several types of dimeric lesions between adjacent pyrimidine bases , most notably cyclobutane pyrimidine dimers ( CPD ), 6-4 photoproducts ( 6-4PP ) and the Dewar valence isomers .

6-甲基-4-羟基嘧啶二聚体氢键结构性质

On Structures and Properties of Hydrogen Bonds in 6-methyl-4-hydroxy Pyrimidine Dimer

紫外光照射可导致生物体产生两种损伤：（6-4）光产物和环丁烷嘧啶二聚体。

UV radiation induced two major classes of pyrimidine dimmer s : the pyrimidine ( 6-4 ) pyrimidone photoproduct ( 6-4 product ) and the cyclobutane pyrimidine dimmer ( CPD ) .

本实验应用碱性凝胶电泳技术探讨了活性氧自由基在紫外线照射人体皮肤形成环丁烷嘧啶二聚体中的作用。

To define further the role of reactive oxygen species ( ROS ) in ultraviolet radiation ( UV ) induced the formation of Human skin 's CPD , experiments were performed using alkaline gel electrophoresis technique . Purified DNA was incubated with antioxidants .

6-甲基-4-羟基嘧啶单体及二聚体质子转移过程的理论研究

Theoretical Studies on Proton Transfer Reactions of 6-Methyl-4-hydroxy Pyrimidine Monomer and Dimer