乳糖操纵子

The second part in this paper, an integrated model includes catabolite repression, inducer exclusion, lactose hydrolysis to glucose and galactose, and synthesis and degradation of allolactose.

论文第二部分主要是建立了一个比较完整的乳糖操纵子模型，包含代谢物阻遏、诱导物外排、乳糖水解为葡萄糖和半乳糖、别乳糖的合成和降解，以及细胞的生长。

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。

Galactosidase,galactose permease,and thiogalactoside transacetylase,respectively,preceded by an operator siteand a promote .

半乳糖甘透性没6和硫代半乳糖甘酰基转移酶，结构基因之前有操纵基因位和启动子。

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。

An operon containing genes involved in lactose metabolism.

含有乳糖代谢基因的操纵子。

The logic of the Lac operon is that the proteins required to use lactose are only made when their substrate is available.

原译：Lac 操纵子的逻辑是当可获得它们的底物时，蛋白质必须只用乳糖。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。