操纵子

Ara operon Operon containing genes that metabolize the sugar arabinose.

ara 操纵子含有阿拉伯糖代谢基因的操纵子。

In negative repressible operons , transcription of the genes on the operon normally takes place.

在负向可阻遏操纵子中，操纵子的基因转录一般都会发生。

The first part of this paper is to set up a novel mathematical model describing expression and regulation of trp operon, in which not only the effects of repression and attenuation on transcription are taken into consideration, but the interaction between repression gene and structural gene as well as the transportation of tryptophan across cell membrane are also considered.

论文第一部分主要在已有的色氨酸操纵子模型基础上，建立了一个新的用于描述色氨酸操纵子动态行为的数学模型，它不仅考虑了阻遏、弱化以及反馈抑制作用对转录的影响，而且考虑了表达阻遏蛋白的基因和表达关键酶的基因之间的相互作用和影响，以及色氨酸外排的影响。

LacZ gene was fused with the promoter of the acoR gene and bkdR gene, and two recombined genes were expressed in sigL mutant strain and HD-73 wild strain sequentially.

分别将调控aco操纵子（编码3-羟基丁酮脱氢酶系统）的转录调节基因acoR和调控bkd操纵子（编码催化支链脂肪酸合成的酶系统）的转录调节基因bkdR的启动子与lacZ基因融合，并转入出发菌株和sigL突变体中，测定b-半乳糖苷酶的活性。

Biosynthesis and assembly of K88 fimbriae are regulated by the fae operon,which contains 10 genes designated faeA-faeJ.

菌毛的合成与装配是由fae操纵子调控的，fae操纵子包含10个基faeA～faeJ，其中有些基因表达菌毛装配所需的各种结构蛋白、分子伴侣和调控因子。

Like eukaryotes, but unlike bacteria, they have introns in their transfer RNA, but like bacteria they have polycistronic operons.

像真核生物而不像细菌，转运 RNA 中含有内含子，还有细菌不具备的多顺反子的操纵子。

In negative inducible operons , a regulatory repressor protein is normally bound to the operator and it prevents the transcription of the genes on the operon.

在负向可诱导操纵子中，一个调节的阻遏蛋白质一般会与操纵基因结合，并阻止操纵子中基因的转录。

Trp and lac operons were usedsas the research object in this paper and two extended mathematical models were proposed on the basis of previous works. The parameters of the model were determined and the results were analyzed. A steady-state optimization model of tryptophan biosynthesis was established based on indirect optimization method. The network analysis was used to lac operon system.

本文以色氨酸操纵子和乳糖操纵子为主要研究对象，在前人的研究基础上建立了较为全面的新的数学模型，确定了模型参数，并对计算结果进行了分析，建立了稳态的优化模型，并利用间接优化法对色氨酸生产过程进行优化；利用网络分析法对乳糖操纵子系统进行分析。

Attenuation vs repression The trp operon is regulated by both repression(which determines whether transcription will occur or not)and attenuation.Other operons for amino acid biosynthetic pathways may also be regulated by both repression and attenuation or only by attenuation.

弱化作用与阻遏作用的比较 trp操纵子同时受到弱化作用和阻碍作用的调控，其他氨基酸生物合成途径的操纵子也可能受弱化作用和阻碍作用的调控，或者仅有弱化作用调控。

Attenuator Transcribed sequence just downstream of the trp operon promoter that is central to the attenuation mechanism.

衰减子 紧接在 trp 操纵子的启动子之后转录出来的序列，对衰减作用机理很重要。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。