These results showed that the ionizing group of the enzyme active center is the carboxyl group.
化学修饰法研究进一步证明侧链羧基是酶的必需基团，并测定出酶活性必需的羧基数为一个。
Objective To study the effects of phosphate on guanidine denaturation of human placental alkaline phosphatase (HPAP) and provide a theoretical basis for flexibility hypothesis of enzyme active sites.
目的观察磷酸盐对人胎盘碱性磷酸酶(HPAP)胍变性的影响，为酶活性部位的柔性理论提供证据。
But if the telomerase enzyme is very active, telomere lengths are maintained and cells are kept young.
但是，如果端粒酶非常活跃的话，端粒的长度得以维持，而细胞则能保持年轻。
They are able to show that active peroxiredoxin 1, Prx1, an enzyme that breaks down harmful hydrogen peroxide in the cells, is required for caloric restriction to work effectively.
他们已经证明出活性过氧化物酶1（prx1），一种能够将细胞内有害的过氧化氢分解的酶类，正是此正面效应的所需酶类。
The catalytic center of an enzyme is composed of a set of amino acids whose three-dimensional arrangement forms the "active-site" that allows them to efficiently bind and modify the substrate.
酶的催化中心是由一组氨基酸组成，其三维结构形成活性位点，允许它高效地结合或修饰底物。
Copper is one of essential trace elements for human, acting as an active agon of lysyloxidase which is critical enzyme for collagen maturation.
铜是人体必需的微量元素之一，是胎膜中胶原纤维发育成熟的关键酶赖氨酰氧化酶的活性辅基。
Basic single-chain polypeptide that inhibits numerous serine proteases by binding to the active site of the enzyme, forming tight complexes.
基本的单链多肽，通过与酶的活性位点紧密结合形成复合物，抑制大多数的丝氨酸蛋白酶。
Chemical modification studies showed that the sulfhydryl, guanido, amino, carboxyl and indolyl groups may participate in the active center of the enzyme.
化学修饰实验发现：巯基、胍基、氨基、羧基和吲哚基可能参与酶活性中心的组成。
Plavix does not have its anti-platelet effects until it is metabolized into its active form by the liver enzyme, CYP2C19.
波立维在被肝酶cyp2c 19代谢转化为其活性形式前不具有抗血小板作用。
Enzyme content and active and mitochondria function will change about in rat liver in different exercise.
运动可导致鼠肝脏内的酶含量、酶活性及线粒体功能发生变化。
Enzyme engineering technology can improve the extraction and separation efficiency as well as transformation of active components in traditional Chinese medicine(TCM).
利用酶工程技术，可以提高中药有效成分的提取率，促进微量活性成分的转化。
Irreversible inhibitor of Thrombin and other serine proteases. Inhibits by acylation of the active site of the enzyme. Much less toxic than PMSF and DFP.
凝血酶及其他丝氨酸蛋白酶的不可逆抑制剂，将活性位点酰基化。比PMSF和DF P毒性小得多。
A mechanism in which the active site of the enzyme does not change shape during catalysis.
一种在催化反应中酶活性位点形状不发生改变的机理。
This article introduces the application of hydrolases, oxidoreductases and their enzyme sources in the synthesis of optically active drugs.
本文介绍水解酶、氧化还原酶及其酶源在光学活性药物合成中的应用。
Soil respiration and active microbiomass were good indexes of soil microbial characters and soil enzyme.
土壤呼吸和土壤活跃微生物量是衡量土壤微生物特性和土壤酶的较好指标。
ADH2 which has a very heigh active was thought a critical enzyme.
ADH2具有很高的活性，被认为是最关键的酶。
The metal ion may be the catalytic center of the cofactor, or it may serve to bind the enzyme and substrate together to hold the enzyme in a catalytically active conformation.
金属离子可以是辅助因素的催化中心，也可以帮助形成酶活性所必须的构象。
Asparagus peel as raw materials, adopting enzyme hydrolysis method, extract the high active dietary fibre.
以芦笋皮为原料，采用酶法水解制备高活性膳食纤维。
Saccharifying enzyme and active dry yeast and cellulase were added in the process of liquid fermentation of residual dis-tillers grains of yellow rice wine for alcohol production.
添加糖化酶、活性干酵母和纤维素酶进行黄酒残糟液态发酵和蒸馏生产酒精。
Nattokinase, the main active ingredient of natto, is a potent fibrinolytic enzyme and has a potent protein structure made up of a single polypeptide chain consisting of 275 amine acids.
纳豆激酶，纳豆的主要活性成分，是一种强纤维蛋白溶解性酶，且含有一种由275种氨基酸组成的单个多肽链强蛋白结构。
This finding led the researchers to conclude that all three active sites are essential for the proper functioning of the enzyme.
这项发现使研究者总结道，所有三种活性部位对酶发挥正常功能都是必要的。
The Aloe contains a number of active principles such as anthraquinone compounds, polysaccharide, organic acid, amino acid, mineral elements and active enzyme.
芦荟含有蒽醌类化合物、多糖、有机酸、氨基酸、矿质元素活性、酶等多种有效成分，本文阐述了各有效成分的药理和保健功效。
Some irreversible inhibitors even become covalently bound to amino acids in the active site of the enzyme as they are brought through the early chemical steps of catalysis.
一些不可逆抑制剂，甚至成为共价结合的酶的活性部位的氨基酸，因为他们带来的是通过早期的催化化学步骤。
Several enzymatic methods, including enzyme catalyzed enantioselective synthesis and kinetic resolution, for the preparation of optically active cyanohydrins are reviewed.
综述了酶催化立体选择性合成及动力学折分制备旋光性氰醇的几种方法。
The present work revealed that the active oxygen radicals were generated from alfalfa callus cells during cell wall digestion in enzyme solution.
研究发现，分离原生质体的酶解脱壁处理可以诱导苜蓿细胞产生活性氧。
An enzyme called 11beta-HSD1 is involved in making these hormones and has been shown to be more active in the brain during aging.
有一种叫做11beta -HSD1的酶参与这些激素的合成，并且已经证明它在大脑衰老过程中表现的很活跃。
By use of enzyme chemical reaction method to determine the variations of serum bile acid level in 413 cases with virus hepatitis during both active and convalescent stages.
用酶偶联化学反应方法检测413例各型病毒性肝炎患者活动期和恢复期血清胆汁酸含量变化。
After this reacts with a protease enzyme, the active toxin is released.
之后与某种蛋白酶反应并释放出活性毒素。
The enzyme may exist in two interconvertible, active forms which possess different activation energies.
酶可以以两种相互可变的、具有不同活化能的活性形式存在。
The enzyme may exist in two interconvertible, active forms which possess different activation energies.
酶可以以两种相互可变的、具有不同活化能的活性形式存在。
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