还原酶

Ascorbate is concomitantly oxidized to monodehydroascorbate. Some monodehydroascorbate radicals are re-reduced in a reaction catalyzed by monodehy- droascorbate reductase, but the remainder undergoes spontaneous dismutation to ascorbate and dehydroascorbate.

在抵抗氧化胁迫的反应中，抗坏血酸自身被氧化为单脱氢抗坏血酸，一部分单脱氢抗坏血酸在单脱氢抗坏血酸还原酶的催化作用下还原为抗坏血酸，另一部分单脱氢抗坏血酸的在歧化作用下被不成比例地还原为抗坏血酸或氧化为脱氢抗坏血酸。

Effects of water stress on the level of reactive oxygen speciesand activities of antioxidant enzymes in the leaves of wheat(Triticum durum Desf.) seedlings were investigated.Water stress resulted in significant increase in the contents of O-.2,MDA and the activities of superoxide dismutase and ascorbate peroxidase in wheat leaves.However,the activities of glutathione reductase,catalase and the content of H2O2 were not changed obviously under water stress.

分析了水分胁迫对小麦幼苗叶片中活性氧水平和抗氧化酶活性的影响，结果发现，水分胁迫能够显著提高超氧阴离子(O-2·)和丙二醛的含量及超氧化物歧化酶和抗坏血酸过氧化物酶的活性，而过氧化氢(H2O2)的含量及过氧化氢酶和谷胱甘肽还原酶的活性变化不明显。

The results were as follows: Being infected virus, the electrolyte exosmosis rate of tobacco leaf was increased , while the increase rate of the leaf being injected ion was less than that of the control. The activities of SOD?

结果表明：病毒侵染后烟草叶片电解质外渗率增大，但离子注入后烟草的电解质外渗率增幅小于对照；病毒侵染后烟草叶片的超氧化物歧化酶、过氧化物酶、硝酸还原酶的活性及叶绿素含量均有所下降，但离子注入后烟草的上述酶活降幅较小；CAT活性在接毒后呈先低后高的变化，而对照在接毒后 10天该酶活性高出离子注入烟草 2倍多，随后剧降，到接毒 2 5天时仅为离子注入处理烟株 1/ 2。

Nitrite oxidoreductase was responsible for the nitrification of nitrite-oxidizing bacteria, which was coded by norB gene and others.

硝化菌主要由两大生理群组成：氧化氨氮为亚硝酸盐氮的是亚硝酸菌；氧化亚硝酸盐氮为硝酸盐氮的是硝酸菌，硝酸菌中负责硝化作用的酶是亚硝酸氧化还原酶，这个酶由norB等基因编码，因而对这个酶和基因的研究将有助于氮污染的控制和防治。

Acetoin dehydrogenaseactivity both in mutant strain UV-3 and the parental strain 10293 were lower than 0.001U/mg.

乳酸脱氢酶、双乙酰还原酶和α-乙酰乳酸脱羧酶三种酶活最低的pH分别为7.0、7.0和7.5左右。

The effects of cryopreservation (-196℃) on the antioxidant activities of enzymes (SOD, CAT, GSH-PX and GR) in seminal plasma and spermatozoa of Russian sturgeon Acipenser gueldenstaedti were studied by a reagent kit to clarify damage mechanism of spermatozoa.

为了探讨超低温(-196℃)对精子的损伤机理，采用试剂盒测定了冷冻前后俄罗斯鲟精浆和精子中超氧化物歧化酶、过氧化氢酶、谷胱甘肽过氧化物酶和谷肽甘肽还原酶等酶活性。

In this review, the biosynthetic pathway of ginsenosides was introduced and the research progress on enzymes related to ginsenoside biosynthesis , such as 3-hydroxy-3-methyl-glutaryl-CoA reductase, geranyl pyrophosphate synthase, farnesyl pyrophosphate synthase, was summarized in detail.

本文综述了人参皂苷的生物合成途径，并介绍了3-羟基-3-甲基戊二酸CoA还原酶、牻牛儿基二磷酸合成酶、法尼基二磷酸合成酶等人参皂苷合成途径相关酶的研究进展。

To study genetic mutations of methylenetetrahydrofolate reductase C677T and cystathioinine-β-synthase T833C related to homocysteine metabolism in patients with ischemic stroke, the MTHFR gene C677T gene mutation and the CBS T833C gene mutation were detected by PCR-RFLP or ARMS method in 74 patients with ischemic stroke and 83 normal people for control. Results showed that the frequencies of MTHFR genet homogenetic type(2.7%), heterogenetic type(51.4%) and T allele(28.4%) in ischemic group were higher than those in control group(1.2%, 39.8% and 21.1%, respectively).

为研究同型半胱氨酸代谢相关酶亚甲基四氢叶酸还原酶基因C677T和胱硫醚-β合成酶基因T833C位点碱基突变与缺血性脑卒中的关系，对74例缺血性脑卒中患者和83例健康对照者，采用聚合酶链反应-限制性片段长度多态性技术检测MTHFR基因C677T基因型，用扩增阻滞突变体系法检测CBS基因T833C突变。

To acquire iron, many plants reduce Fe to Fe in soil by ferric-chelate reductases, which is an obligatory process for the iron acquisition.

为了获取铁元素，许多植物都将三价铁还原为二价铁后再吸收，由三价铁还原酶参与的还原过程是植物从土壤中获取铁的限速过程。

A few oxidoreductases and isomerases are used, but hardly any transferees, assessor lipases.

氧化还原酶和异构酶用得很少，而转移酶、裂解酶或连接酶则几乎没有用到。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新