活性部位

其性质主要包括：酶的构成、酶的分子量、酶的活性部位、酶的最适pH与最适温度、酶所催化的反应、反应类型、反应底物及产物等。

The characters mainly include composition , molecular weight , active site , optimum pH , optimum temperature , reaction style , reaction substrate and product etc.

利用苯乙酸与捕捉剂反应生成的沉淀，确定固定化青霉素G酰化酶的催化活性部位。

The active site of immobilized penicillin G acylase can be determined according to the precipitant produced in the reaction between phenylacetic acid and capture reagent .

杜仲叶提取物采用天然澄清剂絮凝、超滤膜分离及树脂纯化组合工艺富集纯化得到CA活性部位。

Instead of ethanol sedimentation , natural clarificant combing with ultra-filtration technology were performed to get CA extract from the leaves of EU .

西洋参活性部位对胰岛素抵抗大鼠resistin基因mRNA表达的影响

Impact of Active Fraction of American Ginseng on the Expression Treating Insulin Resistance Rat 's Resistin-mRNA

总之，当将研究的分子作为双光子荧光探针与DNA作用时，作用的活性部位应该有三个，即咔唑环的3,6,9位。

In summary , the positions of 3 , 6 and 9 are all the active sites when the studied molecules interact with DNA as two-photon fluorescent probes .

结论：该预测结果将有助于确定人IFN-λ1、IFN-λ2和IFN-λ3的B细胞表位及其生物学活性部位。

Conclusion : These findings would be helpful for estimate of the epitopes and activity sites localized within human IFN - λ 1 , IFN - λ 2 and IFN - λ 3 .

六味地黄汤活性部位3A的免疫调节作用机理研究

Study on Immunomodulating Mechanism of the Active Fraction of Liuwei Dihuang Decoction

利用它可以模拟天然超氧化物歧化酶（SOD）、碳酸酐水解酶及酸性磷酸酯酶的活性部位研究生物活性。

They can be used for researching bioactivity by simulating the active site of superoxide dismutase ( SOD ), carbonic anhydrase hydrolase and acid phosphatase .

底物经固定化青霉素G酰化酶水解，捕捉剂与水解产物反应生成沉淀，沉积在固定化青霉素G酰化酶的催化活性部位。

When the substrate was hydrolyzed by immobilized penicillin G acylase , hydrolysis product reacted with capture and formed precipitation which deposited on active site of immobilized penicillin G acylase .

ATP结合部位是固氮酶的调节部位；乙炔还原活性部位是固氮酶的催化部位；

ATP binding sites are regulatory sites in the nitrogenase and the acetylene reduction active sites are catalytic sites in the nitrogenase .

对体外初步筛选出的活性部位，又利用S（180）和H（22）小鼠模型进行了体内抗肿瘤试验。

To the effective parts preliminary selected in vitro , anti-tumor experiments in vivo were also done by S_ ( 180 ) - mice and H_ ( 22 ) - mice models .

关于静电作用对酶活性部位残基pKa影响的定量计算

The quantitative calculation of electrostatic effect on the pk α of active site residues in enzymes

微量热法研究VitexnegundoLinn对大肠杆菌抑制作用的活性部位

Microcalorimetry Investigation on Active Position of Vitex negundo Linn against E. coli

方法以体外抑菌试验筛选葎草抗结核活性部位，采用试管倍比稀释法测定葎草提取物最低抑菌浓度（MIC），评价其体外抗菌活性。

Method The method of bacteriostasis in vitro was used to evaluate the Inhibitory Effects against Tuberculous Bacillus of the extracts from Humulus scandens .

自由基自旋密度主要集聚在C2或C3上，未有较大弥散，同时也是前线MO主要布居位置和重要的反应活性部位。

The spin density of free radical mostly concentrates on C2 or C3 and has no large diffusion . They are the key part of reactivity .

采用薄层色谱（TLC）预试法对抗菌活性部位进行了有效化学成分分析，结果表明，紫苏全草抗菌活性成分主要为：挥发油、黄酮、酚、有机酸、香豆素内酯等化合物。

Analysis of antibacterial fractions by TLC demonstrates that the main antibacterial constituents are focused on essential oils , flavonoids , phenols , organic acids and coumarins .

使用有机溶剂处理后，确定了花生饼粉的活性部位，再选用更为纯净的花生蛋白粉替代花生饼粉，有效的提高了AA的产量。

After using organic solvent to make sure the active fraction of peanut meal , we choose peanut protein instead of peanut meal in order to increase AA yield .

结论：早孕、正常足月妊娠、IUGR、重度妊高征时，绒毛及胎盘NOS活性部位呈特定的分布。

Conclusions : Distribution and localization of NOS in placentae of normal term pregnancy , severe PIH and IUGR cases and early villi are specific .

Fukui函数在传统杂环及单取代杂环亲电取代反应中的活性部位预测

Predication of Reactive Sites in Electrophilic Substitution of Heterocycles and Mono Substituted Heterocycles by Condensed Fukui Function

两个抑制剂对KR和FabG的抑制特征基本一致，表明两种不同进化程度的酮酰还原酶的活性部位很相似。

The consistent inhibitory character of two inhibitors suggests that these two β - ketoacyl reductases with different evaluation degrees possess similar active sites .

目的研究A3活性部位抑制子宫平滑肌收缩的机制。

Objective To study the mechanism of inhibitory effect of A 3 active component ( active site , A 3 ) from Angelica naphtha on myometrium contraction .

目的：探讨六味地黄汤活性部位CA-4对小鼠B（16）黑色素瘤~（31）P磁共振波谱（~（31）PMRS）的影响。

To study the effect of CA-4 , an active fraction from Liuwei Dihuang Decoction , on ~ ( 31 ) p magnetic resonance spectroscopy ( MRS ) of melanoma B_ ( 16 ) in mice .

酶与抗体反应前后的表观米氏常数Km及反应速度没有明显变化，表明抗体是结合在酶的非活性部位，没有或很少影响酶的活性中心的构象。

The apparent Michaelis constant and reaction velocity of the enzyme did not change after treatment with antibody . It was shown that the antibody might combine with a non-active site of acetylcholinesterase without affecting the conformation of its active site .

本论文分为两个部分，第一部分对中药复方CM生物活性部位进行了追踪和筛选，确定了中药复方CM的活性部位，并研究了活性部位的化学成分。

This thesis includes two parts . In the first part , the bioactive fractions of Compound Chinese herbs of CM were studied by means of activity track . Then the chemical constituents from the bioactive fractions were isolated .

目的：结合黄精的传统功效，研究其活性部位粗多糖的滋阴作用，并研究其对阴虚模型小鼠胸腺、脾脏指数及血清中IL-2含量的影响。

To study the crude polysaccharide effect of nourishing yin in the light of traditional functions and to explore its effect on mice 's thymic and spleen indexes as well as IL-2 level in serum .

目的研究当归A3活性部位（A3）的抗炎作用及其对脂多糖（LPS）诱导离体大鼠子宫环氧化酶-2（Cox-2）表达增高的影响。

Objective To study the inhibitory effects of angelica A_3 active fraction ( A_3 ) inflammation and up-regulation of cyclooxygenase-2 ( Cox-2 ) expression of rat uterus induced by lipopolysaccharides ( LPS ) .

目的探讨板蓝根抗内毒素活性部位F022对脂多糖（LPS）刺激小鼠组织膜结构伸展刺突蛋白mRNA（moesinmRNA）表达的影响。

Objective To probe into the effect of the anti-endotoxic part in Radix Isatidis on the expression of moesin mRNA in tissues of mice induced by lipopolysaccharide ( LPS ) .

硒是人体必需的微量元素之一，硒代半胱氨酸（Sec）是硒在体内发挥作用的主要形式，通常作为催化基团存在于酶的活性部位。

Selenium is one of the essential trace elements for human body . Selenocysteine , usually residing in the active site of enzyme as catalytic group , is the main form in which the selenium plays in vivo .

在此基础上，我们在三维结构水平上解释了磷脂酶A2荧光光谱学研究的一些结果。我们还对四种江浙蝮蛇毒磷脂酶A2的酶活性部位的静电势分布做了分析。

We have compared these structures of phospholipase A 2 's , explained the results of fluorescent spectrum study on the phospholipase A 2 's and calculated the electrostatic potential maps on the catalytic active site .

方法：体外初步筛选出的青天葵石油醚和乙酸乙酯活性部位，利用S180和H22小鼠模型进行了体内抗肿瘤试验。

Methods : The effective petroleum ether extract and ethyl acetate extract parts preliminary were selected in vitro , then anticancer experiments in vivo were done by S180-mice and H22-mice models .