还原酶

基本解释 (translations)

reductase  ·  reductases  ·  reducase

词组短语

reducing ferment · reduciog enzymes

与还原酶相关的网络例句 [注：此内容来源于网络，仅供参考]

The absorption of root system was the main sources of nitrogen in the plant.The effects of matrix ventilation on the abaorption,transportion and metabolism of nitrogen in the root system of cucmber were discussed deeply.The results showed that contents of ammonium,nitrate,free amino acids and soluble protein in cucumber roots were higher in G1 treatment.Contents of ammonium,nitrate and free amino acids in cucumber roots were the trend of the dropping after the first rising in F1 treatment,but contents of soluble protein was lower11.03%than that of the control.

根系吸收是植物体内氮素的主要来源，本研究深入探讨了基质通气状况对黄瓜根系氮素吸收、运输和氮代谢的影响，结果表明G1通气处理根系的铵盐、硝酸盐、游离氨基酸和可溶性蛋白含量均较高；非通气处理(F1处理)根系内铵盐、硝酸盐和游离氨基酸含量呈先升高后降低的趋势，而可溶性蛋白含量始终较低，比对照降低11.03%。G1处理根系硝酸还原酶、亚硝酸还原酶、谷草转氨酶、谷丙转氨酶、谷氨酰胺合成酶活性均较高；而F1处理的酶活性在处理末期显著降低，其中谷氨酰胺合成酶活性比对照降低33.33%。

Diketoreductase is a new class of enzyme, and compared to other oxidoreductase, the unique property is that it can be reduced diketone substrate to corresponding dihydroxy alcohol with high stereoselectivity.

双羰基还原酶（Diketoreductase，DKR）是一类全新的酶，与其他的氧化还原酶相比，其独特之处在于它能够同时还原两个羰基还原成羟基，并有高度的立体选择性。

On the basis of the kinetic equation of substrate reaction in the presence of urea or guanidine hydrochloride, all microscopic kinetic constants for the free enzyme and enzyme-substrate binary and ternary complexes have been determined. The results of the present studies indicate that:①In the presence of urea or guanidine hydrochloride, enzyme-substrate complexes lose their activity less rapidly than the free enzyme. Therefore, both substrates, NADPH and 7, 8-dihydrofolate, protect dihydrofolate reductase against inactivation.②The denaturation of dihydrofolate reductase by urea follows single-phase kinetics, and changes in enzyme activity and tertiary structure proceed simultaneously in the unfolding process, so it may be an"all or none"process.③The GdnHCl-induced unfolding of the dihydrofolate shows a biphasic transition, while the change in the enzyme activity is a single exponential process. The rate constant of inactivation is consistent with that of the fast conformational change. Therefore, the kinetic intermediate of protein unfolding should be a partially folded and inactive form.

我们根据在脲或盐酸胍存在下的底物反应动力学方程求得游离酶和酶底物二元、三元复合物的微观动力学常数，结果表明：①酶-底物二元、三元复合物的失活速度明显慢于游离酶，说明两个底物二氢叶酸和NADPH对酶的失活都具有一定程度的保护作用；②在脲作用下，酶的失活和构象变化均为单指数项过程，而且酶的活力丧失和三级结构变化是同时发生的，说明二氢叶酸还原酶的脲变性可能是一个"全或无"的两态过程；③在盐酸胍作用下，酶的构象变化为两相过程，而失活则是单指数项过程，酶分子构象变化的快相速度常数与失活速度常数基本一致，因此我们认为二氢叶酸还原酶的盐酸胍变性过程中存在一个没有活力、但仍具备一定空间结构的变性中间体。

Diketoreductaseis a class of new enzyme, and compared with other oxidoreductase, whose uniqueness lies in its ability to restore at the same time reduced to two hydroxy carbonyl and a high degree of stereoselectivity.

双羰基还原酶（Diketoreductase，简称DKR）是一类全新的酶，与其他的氧化还原酶相比，其独特之处在于它能够同时还原两个羰基还原成羟基，并有高度的立体选择性。

There is still no consensus on the expression of the two isoforms in the human prostate and their cellular locations are also controversial. It is not known to which extent each of these isozymes contributes to overall enzyme activity in different prostatic tissues. In an attempt to elucidate which isoform of the 5α-reductases is responsible for the metabolism of T in normal and diseased human prostate, we performed qualitative and semi-quantitative studies of both enzymes in normal, benign hyperplastic and adenocarcinomatous human prostate tissues by RT-PCR and Immunohistochemistry methods.

现已成功地克隆出编码Ⅰ型及Ⅱ型5α-还原酶的基因，关于这两型5α-还原酶在前列腺组织及不同类型细胞中的存在、分布情况及其对组织中睾酮代谢各自所起的作用仍存在许多争议，为此我们应用RT-PCR及免疫组化方法对国人正常、良性增生以及前列腺癌组织中两型5α-还原酶的表达进行了定性和半定量研究。

Bacterially triggered CDDS 细菌触发型细菌触发型 CDDS The presence of azo reductase enzymes play pivotal role in the release of drug from azo bond prodrugs while glycosidase activity of the colonic microflora is responsible for liberation of drugs from glycosidic prodrugs.

偶氮还原酶溶解酶的存在在偶氮键药释放过程中发挥关键作用，结肠菌群的糖苷酶活性负偶氮还原酶溶解酶的存在在偶氮键药释放过程中发挥关键作用，结肠菌群的糖苷酶活性负溶解释放过程中发挥关键作用的糖苷酶活性糖苷药物的解放。

However, the first one enzyme 1-deoxy-D-xylulose 5-phosphate synthase gene and the second one enzyme 1-deoxy-D-xylulose 5-phosphate reductoisomerase gene in MEP pathway had been reported and expressed in the latex of rubber tree, indicating that MEP pathway may be involved in rubber biosynthesis.4 - hydroxy -3 - methyl -2 -- butenyl -4 - phosphate reductaseis the last enzyme that catalytic 4 - hydroxy -3 - methyl -(2E)- butenyl -4 - phosphate to generate isopentenyl pyrophosphate.

然而已有报道MEP途径中第1个酶1-脱氧-D-木酮糖-5-磷酸合成酶（1-deoxy-D-xylulose 5-phosphate synthase，DXS）基因和第2个酶1-脱氧-D-木酮糖-5-磷酸还原酶（1-deoxy-D-xylulose 5-phosphate reductoisomerase ，DXR）基因在橡胶树胶乳中的表达，这表明MEP途径可能参与橡胶的生物合成。4-羟基-3-甲基-2--丁烯基-4-磷酸还原酶（4-hydroxy -3-methyl-2--butenyl-4-diphosphate reductase，HDR）是异戊烯基焦磷酸合成途径之一甲基赤藓糖磷酸（methylerythritol phosphate，MEP）途径中的最后一个酶，催化4-羟基-3-甲基-(2E)-丁烯基-4-磷酸生成异戊烯基焦磷酸。

The result shows: in 0~360 kg/hm^2 fertilizer can improve the plant height, dry matter accumulation of maize, nitrogen accumulation, root vigor, leaf nitrate reeducates activity, chlorophyll content and yield, meanwhile the leaves' nitrate reeducates activity, dry matter accumulation and the final output of wheat, root activity and other indicators were significantly correlated; Cultivating under the same conditions and dropping the fertilizer amount from 360 kg/hm^2 to 315 kg/hm^2, the dry matter accumulation will be increased, the roots vigor and leaf nitrate reeducates activity will be strengthened, but the yield are not obviously different in the same treatment.

结果表明：在0~360kg/hm^2的施肥范围内，肥料能显著增加玉米植株的株高、干物质积累盆、叶绿素含量和籽粒产量，提高根系活力、叶片硝酸还原酶活性；同时硝酸还原酶活性、干物质积累量、根系活力和叶绿素含量等指标与玉米最终产量呈显著正相关；在相同的栽培条件下，将施肥量从360kg/hm^2降至315kg/hm^2，植株的于物质积累量增加、根系活力、叶片硝酸还原酶活性增强，但处理间籽粒产量无显著差异。

He analysis of the category and function of TCB stress inducible proteins showed that different groups of proteins were induced by 5 mg L^(-1) TCB stress. They are detoxification enzymes (including esterase, aldo/keto reductases, and glutathione S-transferase), cell wall compound metabolism related enzymes (including UDP-glucose protein transglucosylase and GDP-mannose 3,5-epimerase 1), phytohormone metabolism and regulation related enzymes or proteins (including aci-reductone dioxygenase 4, beta-glucosidase, two members of pathogenesis-related proteins from family 10), primary and secondary metabolism regulative enzymes (including translational elongation factor Tu, cytosolic orthophosphate dikinase, triosephosphate isomerases, alanine aminotransferase, and isoflavone reductase).

CB胁迫能诱导根系内不同类型蛋白质的表达，它们是：解毒酶（包括脂酶、醛／酮还原酶、谷胱甘肽－硫转移酶），细胞壁物质代谢相关酶（包括蛋白转葡萄糖基酶、GDP-甘露糖－3，5-异构酶1），激素代谢或调节相关酶（包括酸式－还原酮二加氧酶、β-葡萄糖苷酶、病程相关蛋白家族10中的2个不同蛋白），原初或次生代谢相关酶（包括转录延长因子、细胞质磷酸丙酮酸双激酶、磷酸丙糖异构酶、丙氨酸氨基转移酶和异黄酮还原酶）。

Carbonyl reductase is a monomeric oxidoreductase that catalyzes the NADPHdependant reduction of a variety of quinones, ketones, and aldehydes. It is widely distributed in the cytoplasm of various tissues of mammalian and non-mammalian species, and is involved in detoxification, physical regulation, as well as in drug metabolism.

羰基还原酶是一类依赖于辅酶NADPH催化各种醌、酮和醛等物质还原的单体氧化还原酶，它们广泛分布于哺乳动物和非哺乳动物各种组织的细胞质中，具有解毒、生理调节和药物代谢等重要功能。

与还原酶相关的网络解释 [注：此内容来源于网络，仅供参考]

Salmonella aberdeen：阿伯丁沙门菌+reductase 还原酶

-Salmonella 沙门菌属+red bean 赤豆 | -Salmonella aberdeen 阿伯丁沙门菌+reductase 还原酶 | -Salmonella abortus equi 马流产沙门菌+reference men and women 参考人

aldose reductase：醛糖还原酶

作为补充代谢通路,在醛糖还原酶(aldose reductase)催化下,使葡萄糖转化成山梨醇(sorbitol),山梨醇在多元醇脱氢酶(Polyol dehydrogenase)的催化下,进一步生成果糖(fructose).

aldose reductase inhibitor：醛糖還原酶抑制藥 醛糖还原酶抑制药

aldose 醛糖 醛糖 | aldose reductase inhibitor 醛糖還原酶抑制藥 醛糖还原酶抑制药 | aldosterone antagonist 醛固酮拮抗藥

aldose reductase inhibitors：醛糖还原酶抑制剂

环氧合酶-2选择性抑制剂:Cyclooxygenase-2 selective inhibitors | 醛糖还原酶抑制剂:aldose reductase inhibitors | 环加氧酶-2选择性抑制剂:cyclooxygenase-2 selective inhibitors

oxidoreductase：氧化还原酶

GENMED细胞NADPH氧化酶活性比色法定量检测试剂是一种旨在使用氧化型细胞色素C受到NADPH氧化酶催化产生的超氧阴离子O2-的还原,即采用比色法测定其还原后峰值的升高变化,以此测定样品中特异性氧化还原酶(oxidoreductase)的单位活性的权威而

hydroxysteroid oxidoreductase：羟类固醇氧化还原酶

羟补胺酸氧化酶 hydroxyproline oxidase | 羟类固醇氧化还原酶 hydroxysteroid oxidoreductase | 处女膜 hymen

hydroxysteroid oxidoreductase：羟酯氧化还原酶

羟脯胺酸氧化酶 hydroxyproline oxidase | 羟酯氧化还原酶 hydroxysteroid oxidoreductase | 水螅纲 HYDROZOA

plasma membrane redox enzymes：质膜氧化还原酶

神经甾体合成代谢酶:steroidogenic enzymes | 质膜氧化还原酶:plasma membrane redox enzymes | 外源纤维复合酶:the fibre enzymes complex

reductase：还原酶

此类酶中包括有脱氢酶、加氧酶(oxygenases)、氧化酶(oxidases)、还原酶(reductase)、过氧化物酶(peroxidases)等. 其中种数最多的是脱氢酶. 脱氢酶催化的反应,可用通式表示为:凡能催化底物发生基团转移或交换的酶,均称为转移酶(transferases).

dihydrofolate reductase：二氢叶酸还原酶

在细胞里,它被叶酰聚谷氨酸合成酶(folylpolyglutamate synthase)转化成高分子量的聚谷氨酸代谢物,又结合到二氢叶酸还原酶(dihydrofolate reductase)上,从而抑制了它的活性.