含有阿拉伯糖代谢基因的操纵子。
Operon containing genes that metabolize the sugar arabinose.
含有编码色氨酸合成酶基因的操纵子。
Operon containing genes coding for the synthesis of tryptophan.
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。
Objective To clone and express the Tip operon gene of E. coli and increase the enzyme activity of expressed product.
我们网络服务器上的操纵子预测器及提供的数据库能够容易地访问和使用。
The operon predictor on our web server and the provided database are easy to access and use.
研究结果出人意料地显示：左向操纵子转录具有与右向操纵子不同的转录调控现象。
The consequence of study surprisingly suggests that transcriptional regulation of left is different from that of right .
一般认为大肠杆菌rna聚合酶合成大肠杆菌编码乳糖代谢酶(5300 bp的乳糖操纵子)的基因的第一次转录要多长时间？
How long would it take for the E. coli RNA polymerase to synthesize the primary transcript for the E. coli genes encoding the enzymes for lactose metabolism (the 5,300 base pair lac operon)?
一般认为大肠杆菌rna聚合酶合成大肠杆菌编码乳糖代谢酶(5300 bp的乳糖操纵子)的基因的第一次转录要多长时间？
How long would it take for the E. coli RNA polymerase to synthesize the primary transcript for the E. coli genes encoding the enzymes for lactose metabolism (the 5,300 base pair lac operon)?
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