酶的

College of Life Science,Hebei University, Baoding 071002,ChinaAbstract: The activesite of immobilized penicillin G acylase can be determined according to the precipitantproduced in the reaction between phenylacetic acid and capture reagent. Moreover, thelocalization of the immobilized penicillin G with different activity is done as well.

固定化青霉素G酰化酶活性的X射线微分析—活性定位姚子华黄永章仇满德王书香张贺迎武金霞潘延云周艳芬摘要：利用苯乙酸与捕捉剂反应天生的沉淀，确定固定化青霉素G酰化酶的催化活性部位。

This paper reports the property of phytase, the structure and function of its gene and the advances in gene engineering of phytase, with a view to discuss the application prospects.

本文谨对植酸酶的性质、基因结构和功能及其基因工程的研究进展做一综述，并探讨了植酸酶的应用前景。

The experiment research indicates: contrasting with thecontrol groups, Bushen Huoxue Huatan Prescription has the following functions: 1. improving the praxiology function of model rats, 2. improving the activity in cholineacetyl-transferase in hippocampus tissue, 3. increasing the expression of NOS in hippocampus region of cortex, 4. promoting the expression of the synapse P3, in hippocampus region of cortex, 5. reducing obviously the apoptosis number of brain nerve cell .

实验研究表明：与对照组比较，补肾活血化痰方具有：1、改善动物行为学功能；2、提高海马组织胆碱乙酰转移酶活性；3、增加皮质及海马区一氧化氮合酶的表达；4、促进皮质海马区突触素蛋白P_(38的表达；5、显著降低脑神经细胞的凋亡数目。

Dot1 binding to chromatin occurs normally in the absence of H2B-K123 ubiquitylation, suggesting that ubiquitylation does not regulate enzyme recruitment but does regulate the processive activity of the histone methyltransferase.

Dot1结合到染色质通常出现在H2B－K123没有泛素化的状态，暗示泛素化并不调节酶的募集，但调节组蛋白甲基转移酶后续作用的活性。

Besides, we firstly confirmed at the molecular level that P450arom may play an important role in the natural sex change of protandrous fish and revealed that up-regulation of the transcript levels of P450arom during the course of natural sex change of black porgy is not regulated via FTZ-F1.;sturgeon sex related and sex linkage genes by candidate gene approach and suppression subtractive hybridization technique and expression patterns of these genes were also studied.

首次直接在分子水平证明芳香化酶基因可能参与了雌雄同体鱼类性别逆转的调控，而黑鲷性别逆转期卵巢中芳香化酶的表达量上调不是由FTZ-F1基因调控的；同时主要利用候选基因法和抑制差减杂交搜寻史氏鲟性别决定或性别特异性基因，并研究其表达情况。

The purpose of the present work is to find one or two epoxide hydrolase-producing microorganism with high enantioselectivity towards racemic epoxides from the nature and to make researches on the characterization and application of the enzymes.

本研究的目的就是要从自然界中寻找到一到两株能高对映选择性地拆分外消旋环氧化物的环氧化物水解酶产生菌，并对酶的性质和应用进行研究。

The Folium Mori extract inhibited the activity of alpha-glucosidase remarkably,and the effect was much higher than that of Ramulus Mori extract and acarbose.

桑叶生物碱浸膏对α-葡萄糖苷酶活力有很强的抑制作用，其对α-葡萄糖苷酶的抑制作用优于市售的桑枝提取物和拜糖平。

The enzyme reductively unfolded is almost unable to renature indicating the roles of disulfide bonds on maintaining the correct tertiary structure of the enzyme.

还原条件下变性的酶几乎不能复性，表明二硫键对于维持酶的特定空间结构是极为重要的。

To improve the nitrilase production,a strain of Rhodococcus rhodochrous was treated with UV radiation and LiCl,a mutant,tg1-A6,with higher nitrilase activity was obtained.

对实验室保存的1株产腈水解酶的Rhodococcus rhodochrous菌株采用氯化锂进行诱变处理，筛选得到了1株产酶活力较高的菌株tg1-A6。

Rumex extract works by inhibiting the production of tyrosinase, an enzyme present in human skin and that is responsible for the formation of pigmentation which causes color in skin.

鲁梅克斯提取物工程通过抑制酪氨酸酶的生产，一种酶，目前在人体皮肤，这是负责的形成，色素沉著，导致皮肤颜色的。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。