关键酶

维生素E合成途径关键酶基因的克隆及转基因植株构建

Cloning of Key Enzyme Genes Involved in Vitamin E Biosynthesis and Acquirement of Transgenic Plants

生育酚环化酶（TC）是维生素E生物合成途径中的关键酶。

Tocopherol cyclase ( TC ) is a key enzyme for plant vitamin E biosynthesis .

本文研究代谢工程理论，对本实验室的一株HA生产菌（Streptococcusequi）进行了HA合成与分解关键酶基因及功能的研究。

And the pathway for its synthesis of hyaluronic acid ( HA ) was systematically studied .

热应激导致肉仔鸡肝脏维生素C合成关键酶&古洛糖酸内酯氧化酶活性明显降低，使维生素C的合成能力减弱。

Heat stress also caused hepatic gulonolactone oxidase activity to decrease , which indicated the decrease of the capacity of biosynthesis of vitamin C in broilers .

DNA聚合酶β（polymeraseβ，polβ）主要是单个碱基切除修复中的关键酶之一。

DNA polymerase B ( pol B ) is the key enzyme for single base excision repair .

CA是光合作用的关键酶，盐度对CA的影响很可能是光合作用影响产生的原因。

CA was the significant enzyme of photosynthesis , the impact of CA by salinity changes maybe the reason of photosynthesis influence .

还不足以证明PAL是花色苷合成的关键酶；

PAL did not appear to be the key enzyme for anthocyanin synthesis .

采用纯化酶活性分析和人细胞体外培养方法，研究砷对人DNA修复关键酶&DNA连接酶活性的影响。

The effect of arsenic on human DNA Ligase one of key enzyme of DNA repair , was studied by using purified enzymes and human cells in culture .

MMPs是ECM降解的关键酶。

MMPs was the key enzyme of ECM degration .

以上结果表明，在野生型拟南芥中，NAD（H）激酶是活性氧清除中的关键酶，在防止活性氧的过量积累、保护细胞内膜系统免受氧化伤害中具有十分重要的作用。

So that , NAD ( H ) K is a key kinase family in ROS scavenging system .

叶酸、B族维生素缺乏、基因缺陷和关键酶缺失等可导致血浆Hcy水平升高。

Deficiency of folate , vitamin B12 , metabolic gene and key enzyme can result in dis-equilibrium of Hey in EH .

γ-生育酚甲基转移酶（γ-TMT）是维生素E生物合成途径中的关键酶之一，催化γ、δ-生育酚甲基化，生成活性较高的α、β-生育酚。

Gamma-tocopherol methyltransferase (γ - TMT ) played a significant role in vitamin E pathway , which catalyze γ δ - tocopherol into αβ - tocopherol .

Ce（Ⅲ）对增强UV-B辐射胁迫下大豆幼苗光呼吸关键酶活性影响

Effect of Cerium on the Key Enzymes of Photorespiration in Soybean Seedling Under Supplementary UV-B Radiation Stress

利用基因工程技术将C4植物光合关键酶基因转入C3植物以提高其光合、水分和氮素的利用效率已成为国内外研究的一个重要方向。

It is a very important research field that C4 cycle key genes were transformed into C3 plants by gene engineering to improve their photosynthesis , water and N use efficiency .

而增施氮肥与CO2浓度的效应相反，增施氮肥通过提高旗叶和籽粒中蛋白质合成各关键酶活性提高蛋白质积累速率，从而提高籽粒蛋白质含量。

Each key regulatory enzymes activities in flag leaf and grain increase by nitrogen application , thus increased protein content in grain .

NAD（H）激酶是NADPH合成途径中的关键酶。

NAD ( H ) kinase may play an important role in the synthesis of NADPH .

背景与目的：胸苷酸合成酶（ThymidylateSynthase，TS）是DNA合成的关键酶。

BACKGROUND & OBJECTIVE : Thymidylate synthase ( TS ) is a key enzyme in DNA synthesis .

花后150-195d，SS（合成方向）与果实的糖含量变化趋势相一致，为果实的糖代谢的关键酶。

From 150 to 195d after flowering , SS ( synthetic direction ) were the most important enzyme .

异黄酮合酶（isoflavonesynthase，IFS）是合成异黄酮的关键酶。

Isoflavone synthase ( IFS ) is a key enzyme in the synthesis of isoflavone .

核黄素在生物体内发挥着重要的作用，核黄素合酶（RS）是核黄素合成过程中的一个关键酶。

Riboflavin synthase ( RS ) catalyzes the committed step in biosynthesis of riboflavin , which plays an important role in organisms .

PAL和LOX是香蕉抗病性形成的关键酶。

PAL and LOX might be the key enzymes of disease resistance in banana fruit .

木质素过氧化物酶（ligninperoxidase/LiP）、锰过氧化物酶（Manganeseperoxidase/MnP）和漆酶（Laccase/Lac）等是白腐真菌降解复杂有机物的关键酶的主要组成。

Lignin peroxidase ( LiP ), manganese peroxidase ( MnP ) and Laccase ( Lac ) are the key enzymes in the system .

关键酶是吡喃糖氧化酶，它释放出H2O2供含锰的过氧化物酶利用。

A critical enzyme is pyranose oxidase , which releases H2O2 for use by the manganese dependent peroxidase enzyme .

成功克隆了影响果实糖代谢关键酶SPS基因的全长cDNA序列。

We cloned the full-length cDNA fragment of SPS , which is the key enzyme in sugar metabolism of melon fruit .

木质素合成关键酶基因CCR的克隆及其反义表达载体的构建

Cloning of Cinnamoyl-CoA Reductase ( CCR ) Gene and the Construction of Antisense-CCR Expression Vector

资料表明，糖的过度代谢致使机体pH值下降，导致糖代谢关键酶的活性下降，肌肉收缩能力降低，ATP合成及水解释放自由能减少；

Many evidences show that the excessive metabolism of carbohydrate decreases pH , enzyme activity and muscle twitch , reduces ATP composition and free release of hydrolysis ;

背景与目的血管紧张素转换酶（ACE）是RAS系统的关键酶，在肺内表达丰富。

Background and objective Angiotensin-converting enzyme ( ACE ), the key enzyme of RAS , is expressed in abundance in lung .

ABA和6-BA对水分胁迫下玉米幼苗碳素同化关键酶的影响

Effect of ABA and 6-BA on activity of key enzymes in carbon assimilation in Maize Seedlings under water stress

ipt为细胞分裂素生物合成关键酶。

Ipt is the key enzyme for the biosynthesis of cytokinins .

胆固醇合成途径的关键酶：HMG辅酶A还原酶和疾病

The Key Enzyme of Cholesterol Synthesis Pathway : HMG CoA Reductase and Disease