二肽

Serum maleic dialdehyde, superoxide dismutase and glutathione peroxidase were determined by spectrophotometer before and after treatment.

治疗前后采用分光光度计法测定两组血清丙二醛、超氧化物歧化酶和谷胱甘肽过氧化物酶。

They are involved in degrading the contents of Maleic Dialdehyde in osteoblast, and elevating activity of Superoxide Dismutase and Glutathion peroxidease.

表现在可以降低成骨细胞中丙二醛含量，提高超氧化物歧化酶和谷胱甘肽过氧化物酶活性。

Furthermore, the important fragment which is composed of pentenyl cinnamic acid and D-Tyrosine, and the ester which is composed of L-N-methylated phenyl amino acid and diketopiprazine was synthesized with considerable yield The conjugation of the new DOPA analogue into the peptide in the total synthesis of Pepticinnamin E was investigatited

另外，本文作者还进一步合成了高收率的戊烯基肉桂酸衍生物与D-酪氨酸的缩合片段及L-N-甲基苯丙氨酸与哌嗪二酮的酯两个重要的结构组成部分；对新多巴衍生物片段嵌入肽链中的工作亦进行了有益的尝试。

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。

As a result, electrostatic interactions and hydrogen bond were identified to contribute to the affinity interaction, while hydrophobic interaction contributed little. Moreover, the importance of electrostatic interactions and hydrogen bond to the affinity changed with pH value.The effect of rate of mobile phase on the retention of insulin was researched and the dynamic adsorption isotherm was got by analyzing the breakthrough data with Langmuir equation.

通过调节流动相的pH值和离子强度，并使用尿素和乙二醇分别对吸附蛋白进行洗脱，详细研究了吸附效果最好的目标蛋白质与肽配基之间的亲和吸附机理，发现静电作用和氢键是二者之间产生亲和吸附的主要作用力，而疏水相互作用对该亲和几乎没有贡献。

The method uses CCl4 revulsive small rat liver injures a model, medicaments is preventive experiment, through determining transaminase of serum cereal third , millet straw and liver organization third 2 aldehyde content, yellow purine oxidizes peptide of pleasant of Guang of enzymatic, cereal is reductive enzymatic active and liver tectology change are index, observation grackle extracts the protective effect that content injures to liver.

方法采用CCl4诱导小鼠肝损伤模型，药物预防性实验，通过测定血清谷丙转氨酶、谷草转氨酶和肝组织丙二醛含量、黄嘌呤氧化酶、谷胱甘肽还原酶活性以及肝组织形态学变化为指标，观察白头翁提取物对肝损伤的保护功能。

In a pilot hennery, chitosan agents were applied to approach their functions on meat chicken's anti-oxidation activity and production performance by determining the superoxide dismutase and glutathione peroxidase activities and malondialdehyde concentration in blood serum, and the immune organ index, percentage of abdomen fat, and ratio of chicken meat mass to feedstuff. The experiment as designed as 6 groups, with 100 one-day-old chickens for each.

为了探讨壳聚糖对家禽肉鸡抗氧化能力及生产性能的作用，采用1日龄黑脚大麻鸡6组各100只进行分组实验，喂食壳聚糖复合剂，测定了肉鸡血清中超氧化物歧化酶活力、丙二醛含量、谷胱甘肽过氧化物酶活力、免疫器官指数、腹脂率和料重比等指标。

Moreover, we have found the pentapeptide RGSGR, which is present at the C terminus of PatS and blocks heterocyst formation, inhibits the DNA-binding of HetR dimer and prevents hetR up-regulation.

另外，位于PatS蛋白C端的五肽RGSGR可以通过抑制HetR同源二聚体的DNA结合活性，阻断hetR的上调表达而影响异型胞的形成过程。

Combined with animal model of peradaptation to myocardium ischemia , the research observed the level of enzymatic dynamics of myocardium, SOD,MDA,ET and correlation peptide of calcitonin gene in peripheral blood and cardiac function, apoptic cell and expression of apoptosis regulatory gene, ultrastructure of myocardium with BIOPAC16, in situ end labeling and hybridism, optic microscope and electron microscope. The study of animal model of peradaptation to myocardium ischemia illustrated that the peradaptation and pretreatment with Wenxin capsule could be positively protective for the injury of ischemia reperfusion. The protection is mainly reflected by reduction of infarction area, correction of heart rhythm abnormality of ischemia reperfusion, melioration of the contraction and relaxation function of myocardium, recovery of the subcellular structure and themelioration of the abnormality of biochemical and bioactive substance in the myocardium.

并结合心肌缺血预适应动物模型，采用BIOPAC16导生理记录和分析处理系统处理心肌功能指标，采用原位末端标记及原位杂交技术标记凋亡细胞及凋亡相关调控基因的表达，采用光电镜技术观察心肌超微结构的变化，同时观察外周血心肌酶、超氧化物歧化酶、丙二醛、内皮素、降钙素基因相关肽等水平，结果表明心肌缺血预适应及温心胶囊预处理对心肌缺血再灌注损伤具有肯定的保护作用，其保护心脏作用主要表现在缩小心肌梗死范围、抗缺血再灌注心律失常、改善心肌收缩和舒张功能、减轻心肌超微结构损伤，调节心肌生化物质及生物活性物质的生成和释放。

A pair of primers that contained flanking hydropathic amino acid codons were synthesized, to amply the sequence coding for 10~34 aa in the precursor sequence. The amplified fragment was inserted into pRSET-A to generate the first double repeat of the precursor gene. By utilizing a pair of isocaudamer BamH I and Bgl II sites, and another downstream Hind III site of plasmid pRSET-A, following a series of simple double digestions and ligation of the resulted products, a series of repeat (3, 4 and 6) precursor peptide fragment genes were derived.

本实验设计一对两侧含编码疏水性氨基酸密码子的引物，经过扩增前导序列10~34aa基因序列，并重新克隆入质粒pRSET-A构建串联二聚体后，再利用质粒pRSET-A的BamH I / Bgl II同尾酶克隆位点，经一系列简单的酶切和连接，快速构建这一前导肽中不含组氨酸标签序列的串联多聚体基因，并成功表达其六聚体重组蛋白。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。