查询词典 dismutation

These results show that the dismutation activity is crucial for the supercoiled DNA-cleavage.

对酶化学修饰及热处理的结果表明两活性变化趋势一致。

OBJECTIVE: Superoxide dismutase is one of the families of enzymes which is ubiquitous, and efficiently catalyzes the dismutation of superoxide anions.

目的：超氧化物歧化酶是机体内广泛存在的酶家族，可有效催化超氧阴离子的歧化反应。

Tang Wen-Xia In order to find out the relationship between the structure and function of copper/zinc superoxide dismutase, and elucidate mechanism of the catalytic dismutation of 〓, we have designed and synthesized two new model compounds of Cu, Zn-SOD, and studied relationship of their structure, properties and biological activity.

为了阐明Cu，Zn-SOD酶活性中心结构和功能的关系，探讨其催化〓歧化作用机理，本文设计并合成了两种不同结构的Cu，Zn-SOD模型化合物及一系列有关化合物，对它们进行了深入研究。1。

Superoxide dismutases family are thought to be one of the first lines of antioxidant defense and are highly efficient in protecting cells and tissues against oxidative stress by catalyzing the dismutation of superoxide radicals to form hydrogen peroxide and molecular oxygen.

但由于活性氧分子反应的非特异性，它们也会破坏宿主机体细胞内的功能蛋白分子、不饱和脂肪酸分子和核酸等，对细胞造成严重的伤害，进而导致机体生理机能的损伤和免疫系统的破坏。

The result indicates that copper plays an important role in catalyzing the O_2~- dismutation, zinc not only stabilizes the whole structure but also promotes organization of the active site structure.

结果表明，金属铜对于催化歧化超氧阴离子O_2~-具有至关重要的作用，而金属锌起到稳定结构和促成构建活性中心的作用。

Rate constant of ONOO〓 formation, which is access to diffusion-controlled limit, is as three times as that of dismutation of O〓〓· by superoxide dismutase, and much faster than that of reaction of NO with hemecontaining proteins, thus demonstrating that ONOO〓 can form as long as NO meets O〓〓· during their diffusion in biological milieu.

ONOO〓在体内生成有较充分的理论依据。ONOO〓的生成速率接近于受控制的弥散极限，比超氧化物歧化酶歧化O〓〓·的速度快3倍，远远超过NO与血红素蛋白的反应速度。

It was also found that at experimental concentrations there was no regularity for the change of activity of copper salicylate encapsulated in negatively charged liposomes, and copper salicylate encapsulated in liposomes with more negative charges could promote the dismutation of superoxide anion free radicals, however, so could copper salicylate encapsulated in liposomes with fewer negative charges only in lower concentrations.

并发现在实验浓度范围内，负电性脂质体包裹的水杨酸铜，活性变化无规则，且荷负电量多的脂质体包裹的水杨酸铜促进超氧自由基的歧化，而荷负电量少的脂质体仅在低浓度区对超氧的歧化表现为促进作用。

The probe connects rhodamine with artifical enzyme complex, and utilizes the conformational change of SOD active center during the dismutation of superoxide anion to realize the change of the fluorescent intensity of fluorophore.

过程中出现的活性部位结构变化实现荧光团的荧光强度变化，以期实现对O2-。

Cyclodextrin linked to the guanidine causes more positive charge localizing at the central Cu cation of {[Cu (H2O)]2}(superscript 3+), which is favorable to catalyze the dismutation reaction.

与其它配位原子相比，与两个五元环连接的N原子与Cu配位能力相对下降，这也将有利于提高Cu离子与底物的结合能力。

Cyclodextrin linked to the guanidine causes more positive charge localizing at the central Cu cation of {[Cu(H2O)]2}3+, which is favorable to catalyze the dismutation reaction.

与其它配位原子相比，与两个五元环连接的N原子与Cu配位能力相对下降，这也将有利于提高Cu离子与底物的结合能力。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐