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。
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。
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。
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。
Your site isn't a billboard or print advertisement; it should be an active part of a community.
你的网站并不是一个广告牌也不应该充斥着广告，你的网站应该成为网络社区中的一个积极份子。
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）。
It's a very active site and the 13 year old mentor I chatted with in testing the service was very well spoken.
该网站十分活跃，笔者曾和一个13岁的导师聊天。
The company will be four years old in February and says the site has almost fifty million active users.
在明年2月公司已经成立四周年，网站有近5000万活跃用户。
April is an active commenter at this site.
April是该网站上的活跃评论员。
To make a template active, you select it in the site configuration. To make a template block active, you name it in a tag and include it in a template.
要将一个模板设置为活动的，您可以在站点配置文件中选择这个模板。
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）。
Businesses partner with Taobao to access the hundreds of thousands of active users who buy products on their site.
淘宝的商业合伙人也开始接近那些成百上千购买商品的使用者们。
See the Derby project Web site for manuals, source code, and an active user community on the mailing lists.
参阅Derby项目网站，以获得手册、源代码和邮件列表上的活动用户社区。
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。
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。
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。
Blocks the action of target enzymes by binding nearly irreversibly to their active site.
与附近目标酶的活性位点不可逆的结合。
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。
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。
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。
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。
Mixed inhibitors distort the active site, interfering with the chemistry performed by the enzyme.
混合抑制剂扭曲了活动现场，干扰酶进行化学。
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。
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。
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。
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。
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。
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。
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。
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