查询词典 nad

Hydroxysteroid dehydrogenase/carbonyl reductase ( 3α-HSD/CR,EC 1.1.1.50 ) from Comamonas testosteroni is an inducible enzyme which catalyzes the oxidation of androsterone with NAD+ to form androstanedione and NADH. 3α-HSD/CR was a member of the SDRs family, whose crystal structure had been solved by X-ray diffraction in 2000. The structure of 3α-HSD/CR is a homodimer which shows a typical pattern of Rossmann-fold structure consisting of βαβ units, and reaveals similarity with other members upon the SDRs family.

中文摘要 3α-Hydroxysteroid dehydrogenase/carbonyl reductase ( 3α-HSD/CR，EC 1.1.1.50 )是从Comamonas testosteroni菌体中分离而来的诱发性酵素，利用NAD+为辅因子，将受质androsterone氧化成androstanedione并伴随NADH的生成而完成催化反应。3α-HSD/CR是属於SDRs家族成员之一，其立体结构已经在2000年利用X-ray晶体绕射所解出。3α-HSD/CR在结构上为一同源双聚体，并和其它家族成员一样具有βαβ二级结构所叠合组成的Rossmann-fold特徵。

Ethanol is metabolized by ADH, and NAD is used as a cofactor in its metabolism .

乙醇被ADH代谢分解，而NAD常被认为是代谢过程中的辅因子。

NAD+ is a known cofactor of SIRT1, which plays an important role in numerous physiological processes, including differentiation of skeletal muscle cells, and has been implicated in regulation of lifespan and aging.

已知NAD+是SIRT1 的一种辅助因子，后者在众多生理过程中扮演着一个重要的角色，包括骨骼肌细胞的分化，而且还牵扯到了寿命和衰老的调整。

Because of the dependence of both enzymes on NAD, cross talk between them has been suggested.

因为两酶对NAD的依赖性，二者之间的交叉对话已被提出。

Ribose 5-phosphate and its derivatives are components of important cellular molecules such as RNA, DNA, NAD+, flavine adenine dinucleotide, ATP and coenzyme A.

5-磷酸核糖和它的衍生物是细胞内分子如RNA、DNA、NAD+、黄素腺嘌呤二核苷酸、ATP和辅酶A的主分成分。

So, through influencing directly ratio of NAD to NADP , NAD kinase and NADP phosphatase may involved in regulation of respiration and ethylene production in tomato and strawberry fruit, further affect maturation, ripening and senescence of fruit.

因此，NAD激酶、NADP磷酸酶可能通过直接影响NAD和NADP的比例而参与果实呼吸作用和乙烯生成的调节从而影响其后熟衰老过程。

TFP activated NAD kinase in tomato and strawberry fruit, CPZ activated the enzyme in tomato but in strawberry fruit, which indicated that ethylene-started and promoted maturation, ripening and senescence of fruit were related not only to increase in intracellular Ca〓 concentration and CaM content, but also to NAD kinase, and indirectly showed that CaM could regulate NAD kinase in two fruit.

以上结果表明乙烯启动和加速果实成熟衰老不仅与胞内Ca〓浓度和CaM含量增加有关，而且与CaM的另一目标酶——NAD激酶有关，并间接证明CaM对两种果实NAD激酶具有调控作用。

"Plus, NAD+ is a fundamental molecule for cell metabolism, so it is known to have relatively low toxicity." In addition, he says, NAD+ loss occurs after PARP-1 activation, meaning that NAD+ might be used later after injury than gallotannin from green tea.

&另外， nad +的是一个根本性的分子细胞代谢，所以它是已知有相对低毒性&，此外，他还表示，与nad +损失发生后， parp的- 1活化，即与nad +有可能被利用后的伤害比没食子，从绿茶。

In order to understand whether and how Pos5p and Zwf1p affect the form and content of coenzymes, intracellular content of NAD+, NADH, NADP+ and NADPH in different stains were analysized by HPLC.

为了了解它们是否以及如何影响细胞内NAD类辅酶的形式及含量，我们利用HPLC法，对比分析了野生株和突变株胞浆内NAD+、NADH、NADP+和NADPH的含量。

Vertical NAD distributions could be well-fitted by β function and the two-dimennsional NAD distribution by the trend surface equation of relative crown height and relative crown radius.

NAD的水平和垂直分布均可用β分布函数表达，而相对冠高和冠径的二次趋势面表达式可很好地描述NAD二维空间分布。

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