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。
The workload is modeled after a very active IBM site and is "heavily update bound" (that is, it causes lots of disk writes).
这个工作负载以一个非常活跃的IBM站点为模型，并且更新速度非常快（即引起很多磁盘写操作）。
April is an active commenter at this site.
April是该网站上的活跃评论员。
The social networking site that the company runs, QZone, now has 458.5 million active user accounts, nearly even with Facebook's vaunted half a billion users.
该公司运营的社交网站QZone现在也拥有4亿5850万个活跃帐户，与Facebook鼓吹的5亿用户人数几乎持平。
The challenge for Facebook's engineers has been to keep the site up and running smoothly in spite of handling close to half a billion active users.
Facebook工程师们面临的巨大挑战是保证一个近5亿活跃用户的网站一直稳定可靠地运行。
Chongqing's metropolitan square not only has deep cultural connotation but also is important constituent of recreation culture and is an important site to play a active role.
重庆都市广场不但自身具有深厚的文化内涵，而且是都市休闲文化的重要组成，是文化活动开展的重要场所。
The active language of the current session overrides a user's preferred language and the site wide default language.
当前对话的活动语言会覆盖用户的偏好语言和站点范围的默认语言。
But the recent digs have made the temple look much more active, increasing the likelihood that it was an important site in Cleopatra's day.
但是最近的发掘使神庙显得更加活跃，提高了其可能是克利奥帕特拉时期一个重要地点的可能性。
For one, it provides transparency around how active certain members are with the site, specifically around number of photos uploaded and number of paid downloads.
举个例，对于用户在网站上的活跃程度，尤其是上传图片张数以及付费下载次数，它是完全公开的。
And he claims that his own site has a very effective way of demonstrating a person's seriousness of intent, which involves promoting the profiles of those people who are most active on it.
他说他自己的网站能够非常有效的展示出用户是否态度严肃，即通过宣传网站上最活跃的那些人的资料。
You should check site statistics at least monthly if you have an active site.
如果你有一个活跃的站点，你至少应该每月都查看一下站点的统计表。
The current top application on the site is Slide's Top Friends, with 2.5M active users.
现在站点上使用人数最多的程序是Slide的TopFriends，拥有超过两百五十万活跃用户（经常上线的用户）。
They also designed specific inhibitors (small molecules) which bind to the active site of human DDAH.
他们也设计了一个特殊的抑制物(小分子)，它可以结合在人类DDAH的活性位点上。
The classification and active site structure of molecular of superoxide dismutase were introduced, and preparation technology and application of superoxide dismutases in medicine were elucidated.
本文介绍了超氧化物歧化酶的分类和活性中心分子结构，阐述了超氧化物歧化酶的制备工艺及其医学应用。
So it was important from both practical and theoretical point of view to study the active site structure of prolidase.
研究脯氨肽酶活性中心的结构具有重要理论意义和潜在实用价值。
To explore the role of the bridged N atom for a possible proton transfer in the active site of hydrogenase, we tried to introduce a hydrogen bond into a couple of designed molecules.
为研究氢化酶活性中心氮桥结构中氮原子是否起到质子摆渡的作用，设计了在分子内引入氢键的结构。
The probably active site of the cross coupling reaction over nano Ni catalyst is investigated.
讨论了纳米镍催化偶联反应的可能活性位。
Irreversibly inhibits serine proteases by sulfonylation of the serine residue in the active site of the protease.
通过蛋白酶活性位点丝氨酸残基的磺酰化，不可逆的抑制丝氨酸蛋白酶。
MMOH is the active site of MMO, its catalysis reaction mechanism mainly includes the activation of alkyl and oxygen molecule.
羟基化酶是其催化活性中心，它的催化机理的研究主要包括烷烃的活化和分子氧的活化这两个方面。
Covalent catalysis involves the substrate forming a transient covalent bond with residues in the active site or with a cofactor.
共价催化涉及底物与活性位点中的残基或与辅因子形成瞬时共价键。
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。
OBJECTIVE To ascertain the main active site of Pollen Typhae, Pollen Typhae Carbonisatus and Pollen Typhae Parch in effect of hemostasia.
目的确定生蒲黄、炒蒲黄、蒲黄炭止血作用主要活性部位。
For instance, they might construct a compound that inhibits the active site of an enzyme crucial to viral reproduction.
举例来说，他们可以设计某个化合物，作用在病毒复制时不可或缺的酵素活性区，而加以抑制。
Preferably, the ligand does not bind to the active site of an endogenous target compound.
优选所述配体不结合内源靶化合物的活性部位。
The paper summarizes the methods and steps for seismic safety evaluation of active fault and site. The problems existed in evaluation are pointed out and their solutions are presented.
综述了工程场地地震安全性评价中活动断裂评价和场地评价的方法和步骤，指出了评价方法中存在的问题，并提出了解决方案。
Long line engineering sites usually have to pass through some active tectonics, so that the research of active tectonics is of great importance to seismic safety evaluation of this sort of site.
长线工程场地一般都得穿经活动构造带，因而活动构造研究在该类场地的地震安全性评价工作中尤为重要。
Objective: The main aim was to discuss the pain-relieving effects of active site of Psammosilene Tunicoides root (PTR).
目的：探讨金铁锁的镇痛作用及镇痛活性部位。
Current news items take up the main part of the page while active (aka "popular") stories, weather, and site activity panels fill the sidebar.
时事内容占据了这个页面主要部分，而热门报道，天气和站点的活动面板则显示在右边栏中。
According to the failure site data of the well pumping unit in active service, its life statistical model is determined and the service reliability is evaluated quantitatively.
由在役抽油机故障的现场数据来判定其寿命统计模型，实现对抽油机使用可靠性的定量评定。
According to the failure site data of the well pumping unit in active service, its life statistical model is determined and the service reliability is evaluated quantitatively.
由在役抽油机故障的现场数据来判定其寿命统计模型，实现对抽油机使用可靠性的定量评定。
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