查询词典 DNA

The human Rad9, a homologue of yeast Schizosaccharomyces pombe rad9, is a member of the Rad family of checkpoint proteins. It is involved in detection of DNA damage, cell cycle arrest, and DNA repair. Although considerable information about hRad9 and its function has been accumulated, its behavior in malignant cells has not been examined.

人类的Rad9蛋白为Schizosaccharomyces pombe Rad9蛋白的同源蛋白，其为checkpoint rad genes产物中的一员，是一个在演化上具有高度保留性的蛋白。hRad9在细胞内扮演著许多重要的角色，包括侦测DNA的受损、调节细胞周期的进、执 DNA 的修等等。

Thermally denatured DNA was preconcentrated at pretreated GCE by its adsorption in open circuit for 5min or at the potential of+0.3V for 90s, and produced two well-defined oxidation peaks of guanine and adenine residues at+0.80V and+1. 11V in pH 5. 0 phospoate buffer, respectively, but the native DNA did not produce any peaks at the same conditions.

在pH 5.0的磷酸盐缓冲液中，于+0.3V富集90秒或在开路条件下吸附富集5分钟，热变性DNA可以吸附富集在预处理玻碳电极表面，阳极扫描时，鸟嘌呤和腺嘌呤残基产生两个很好的氧化峰，峰电位分别为+0.80V和+1.11V，而在同样条件下，天然DNA却几乎不出现峰。

Objective To explore the significance of DNA ploidy and cell proliferous ratio of prostate intraepithelial neoplasia in diagnose and differential diagnose.

目的探索DNA倍体类型、细胞周期在前列腺上皮内瘤中诊断和鉴别诊断的价值。方法应用细胞图像分析技术检测前列腺上皮内瘤细胞的平均DNA含量、DNA平均倍体值及细胞周期的各个时相的变化。

In bioconv ertion experiment for spiramycin of No.5 transformant, the bioconversion product was analysed with TLC, bioautography, HPLC and mass spectrum.Results showed that the bioconvert product is propionyspiramycin. Propionyl acylase gene was l ocolized on 0.53 kb insert DNA fragment of recombinant pasmid pLJM95. Analysis result of DNA sequence showed that content of G+C is 68.2% for 0.53kb insert DNA fragment .

以No.5转化子对螺旋霉素进行生物转实验，其转化产物经薄层层析，生物显迹，高压液相色谱及质谱分析表明，与标准丙酰螺旋霉素一致，这说明 No.5 转化子具有将螺旋霉素生物转化为丙酰螺旋霉素的能力，丙酰化酶基因位于重组质粒，pIJM95 0.53kb 插入DNA片段上。

The results indicate that [(L 1) 2SnEt 2] can selectively bind to the N 1 atom of the base and the phosphate oxygen atom of AMP and may further destroy the helical structure of DNA, while the dimethyltin compound of 1,3 dimethyl 4 acetyl 5 pyrazolone [(L 1) 2SnMe 2] merely binds to the the phosphate oxygen atom of AMP and causes the contraction of DNA helical structure.

结论3 二甲基 4 乙酰基 5 吡唑酮的二乙基锡配合物(L1 ) 2 SnEt2 可与AMP 的碱基N1 和磷酸根氧原子螯合并可能会破坏DNA 的双股螺旋结构；而二甲基锡配合物(L1 ) 2 SnMe2 易与单核苷酸的磷酸氧结合，难以与单核苷酸的碱基氮原子稳定结合且只引起DNA 双股螺旋的收缩

The cohesive ends of each DNA reanneal and are ligated together . The resulting recombinant DNA molecules are introduced into bacterial host cells .

DNA 片段的粘性末端退火，连在一起，产生的重组 DNA 分子被引入细菌宿主细胞。

This DNA synthesis was aphidicolin-sensitive, indicating it was mediated by replicative DNA polymerase.

这个DNA合成是aphidicolin敏感的，证明它是通过有复制能力的DNA聚合酶介导的。

Results The results showed that 24 of 30 eyes with active HSK with epithelial lesions were positive for HSV-1 DNA.None of the five serpiginous corneal ulcers were positive.Of the five keratitis with unknown causes,one was positive.

结果 活动期HSK具有上皮病变者30眼中24眼检出HSV-1 DNA，5眼匐形性角膜溃疡全部未检出HSV-1 DNA；5眼原因不明角膜炎中1眼检出HSV-1 DNA。

The binding interaction of DNA with the di-iron complex 〓, designed as a model for the di-iron active site in mammalian purple acid phosphatase , are examined firstly and spectroscopically.

对所有研究的含有双核铁、双核锌及双核铜的配合物促进DNA双链水解断裂的反应性进行比较，我们发现要有效地水解断裂DNA双链，对DNA骨架的磷酸基氧原子有一定配位作用的双核金属离子是必要的，因为两个金属离子间存在协同作用，这与有关的天然酶类似。

It is furthernoticed that the local-ordered characteristics of toroids is determined by thecrosslinking effects of spermidine to DNA chains as well as the theperisistence length of DNA in that circumstance.

研究了DNA刚性长度的变化现象及亚精胺分子的桥联作用对有序凝聚的影响，提出了具有不同种微结构特征的DNA凝聚环具有相似的启动机制的观点。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。