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- catabolitesensitive operon 分解代谢物敏感性操纵子
- Objective To clone and express the Trp operon gene of E. 目的克隆并表达大肠杆菌色氨酸操纵子基因,提高其酶活性。
- When the second operon with OC mutation, it will continue to express. 当第二个操纵子带有OC突变时，它将持续表达。
- In this paper,the Monod lactose operon modelis described as a computer program by BASIC language. 本文用BASIC语言设计Monod操纵子数学模型的电子计算机程序。
- The lac operon is an inducible operon, whereas the trp operon is a repressible operon. 乳糖操纵元是可诱导的操纵元；色氨酸操纵元是可阻遏的操纵元。
- Glucose blocks induction of the lac operon by utilizing a positive control mechanism. 葡萄糖通过正调控机制阻止乳糖操纵元的诱导。
- Using a modified random arbitrarily primed PCR approach, the operon encoding the Enterococcus faecal ... 用改进的随机随机引物PCR的方法，操纵子编码的肠球菌粪便 ...
- Consequently, if glucose is present in the medium, it is redundant to induce the lac operon. 因此，如果培养基中存在葡萄糖，诱导乳糖操纵元的打开就是多余的。
- Operon is a unit of bacterial gene expression and regulation, including structural genes and cis-acting control elements in DNA recognized by regulator gene product(s). 控制某一代谢途径的相关基因,紧密连锁地排列在一起,受同一操纵子控制。
- A chromosomal segment of DNA that regulates the activity of the structural genes of an operon by interacting with a specific repressor. DNA中的染色体元素DNA中的染色体，它是通过与一特殊的约束因子相互作用而控制遗传子结构基因的行为
- The agr system contains divergent transcription units driven by promoters P2 and P3. The P2 operon encodes AgrA, AgrB, AgrC, AgrD. P2操纵子编码AgrA、AgrB、AgrC、AgrD;
- Results:160 OPERON primers were screened and a primer H07 was found to be useable to differentiate the three Echinacea species. 结果:共筛选随机引物160个,3种松果菊中,狭叶松果菊与淡紫松果菊的RAPD图谱极其相似,难以区分。
- Operon control of the important features of the double check: It can prevent transcription, but also to identify small molecule-induced. 操纵子控制的重要特性是阻遏物的双重性：它既能阻止转录，又能识别小分子诱导物。
- What consequences would a mutation in the catabolite activator protein (CAP) gene of E. coli have for the expression of a wild-type lac operon? 大肠杆菌的代谢激活蛋白（CAP）基因突变会对野生型的乳糖操纵元的表达产生怎样的影响结果？
- A group of related and closely linked structural genes, together with the operator gene that controls their expression are collectively called an operon. 一组相关的、紧密连锁的结构基因加上控制其表现的操纵基因，统称操纵子。
- High expression of acrA gene leads to multiple-antbiotic-resistance in clinical isolates of Shigella,and Mar operon may contribute to the regulation of acrAB-tolC gene expression. 主动外排系统acrA基因高表达导致临床分离志贺菌产生多重耐药性; acrAB-tolC的表达可能受多种耐药操纵子调控。
- Plasmids pRecAgfp and pUvrAgfp were constructed after DNA damage-inducible promoters of recA and uvrA from Escherichia coli were fused to the reporter gene gfpmut3a operon. 将报告基因绿色荧光蛋白基因(gfpmut3a)分别置于recA和uvrA启动子调控下;构建成质粒pRecAgfp和pUvrAgfp;并转化E.
- By screening polymorphism between two parents with 500 Operon RAPD 10-mer-primers (25 sets), 462 primers produced clear bands, whichaccounted for 92.4%. 利用DH群体两亲本筛选能产生多态性的RAPD引物，筛选了25套500个Operon系列的10碱基引物，其中462个引物可扩增到清晰的条带，有效引物的比例为92.;4%25，谱带总数为2032条，平均每个引物扩增的谱带数为4
- Control of operon genes is a type of gene regulation that enables organisms to regulate the expression of various genes depending on environmental conditions. 控制操纵子基因是属于基因调节的一种，能使生物调控不同基因对环境条件的表现。操纵子调节可以是负向或正向的。
- In E. coli, the mRNA of an operon for two synthesis enzymes has a leader containing the sequence near the site where translation of the first protein starts. 在大肠杆菌中，两个维生素B1合成酵素的基因所共有的操纵子，转录出来的mRNA在靠近蛋白质转译起点处，有一段先导序列。
