查询词典 enzymes

Terpene synthases is one of most important regulatory enzymes in biosynthetic pathway of terpenoids, specially in regulation of terpene biodiversity.

萜类合成酶是萜烯生物合成途径中的重要调控酶之一，特别是在萜烯化合物多样性的调控上具有重要作用。

The results demonstrated that directed evolution is an effective approach to improve the thermo stability of mesophilic enzymes.

这一结果说明采用定向进化技术有效地提高了酶的热稳定性。

Methods Seven probe drugs were incubated with or without methyl protodioscin respectively in human microsomes. The specific substrates used in this study were caffeine (CYP1A2), dextromethorphan (CYP2D6), tolbutamide (CYP2C9),-mephenytoin (CYP2C19), chlorzoxazone (CYP2E1), coumarin (CYP2A6) and midazolam (CYP3A4). The concentrations of the substrate metabolites (paraxanthine, dextrorphan, 4-hydroxytolbutamide, 4-hydroxymephenytoin, 6-hydroxychlor-zoxazone, 7-hydroxycoumarin and 1-hydroxymidazolam) were determined by HPLC and LC-MS/MS. Results MPD 1-10 μmolL^(-1 had no significant inhibition on the activities of the seven cytochrome P450 enzymes.

将MPD和CYP450酶7种亚型的特异性探针底物咖啡因(CYP1A2)、右美沙芬(CYP2D6)、甲苯磺丁脲(CYP2C9)、s-美芬妥因(CYP2C19)、氯唑沙宗(CYP2E1)、香豆素(CYP2A6)及咪达唑仑(CYP3A4)与人肝微粒体进行孵化反应，采用HPLC和LC-MS/MS法测定对应的7种代谢产物（1，7-二甲基黄嘌呤、去甲右美沙芬、4-羟基甲苯磺丁脲、4-羟基美芬妥因、6-羟基氯唑沙宗、7-羟基香豆素和1-羟基咪达唑仑）的浓度，通过与对照组比较，确定MPD对以上7种酶活性的影响。

Finding new microbial enzymes to break down tough cellulose is a major obstacle to producing cellulosic ethanol from plants such as soybeans.

用大豆等植物生产纤维质乙醇，一个主要的障碍就是要找到一种能够分解粗纤维的新的微生物酶。

The paper studied the changes of active oxygen species and related enzymes activities in petal during different stages of two peony tree cultivars.

研究牡丹开花和衰老期间活性氧含量和清除活性氧酶类活性的变化情况。

All of these compounds are phosphorylated to their triphosphate metabolite by their unique set of enzymes in cells.

对于此类病人，通常考虑在进行免疫抑制癌症治疗的同时使用抗HBV药物治疗HBV感染。

Surprised, the researchers then examined the trypanosome genome more carefully and discovered enzymes that in other organisms are known to increase the size of a fatty acid molecule - dubbed elongases, for making fatty acids longer - but never have been shown to actually make a new fatty acid molecule.

奇怪的是，这是研究人员更仔细地检查了锥虫的基因组，发现在其他物种中作为抑止能增加脂肪酸长度的分子（同步复制延伸酶，目的是合成更长的脂肪酸，但是从来没有发现它真正能合成脂肪酸分子）。

Trypsin is the most effective in four kinds of enzymes for degradation.

四种酶降解实验比较显示，胰酶对心包的催化降解力最大。

To disclose deeply and systematically the toxicity and tolerance mechanisms of hybrid tulip tree to heavy metals stress, this paper was carried out to study effects of Pb and Cd single and combined pollution on the growth, membrane lipid peroxidation, antioxidant enzymes system, photosynthetic characteristics, endogenous hormones, mineral elements metabolice.

本文研究了Pb、Cd及其复合污染对杂交鹅掌楸Liriodendron chinense×L。

All three enzymes were considered to be expressed ubiquitously and constitutively in most cells and tissues.

所有这三种酶都被认为是以无所不在和既定的形式分布在大部分细胞和组织中。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。