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首页> 外文期刊>Journal of bacteriology >Identification of sequences necessary for transcription in vitro from the Chlamydia trachomatis rRNA P1 promoter.
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Identification of sequences necessary for transcription in vitro from the Chlamydia trachomatis rRNA P1 promoter.

机译:鉴定沙眼衣原体rRNA P1启动子进行体外转录所需的序列。

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Chlamydia trachomatis RNA polymerase was partially purified by heparin-agarose chromatography and used in conjunction with a plasmid-borne G-less cassette template to characterize the C. trachomatis rRNA P1 promoter in vitro. Stepwise mutational analysis revealed that sequences in the -10, -25, and -35 regions are necessary for promoter activity, but no sequence upstream of position -40 is required. Partially purified C. trachomatis RNA polymerase and purified Escherichia coli holoenzyme exhibited some differences in promoter specificity.
机译:沙眼衣原体RNA聚合酶通过肝素-琼脂糖色谱法部分纯化,并与质粒携带的无G盒模板结合使用,以体外表征沙眼衣原体rRNA P1启动子。逐步突变分析表明,-10,-25和-35区的序列对于启动子活性是必需的,但在-40位上游不需要序列。部分纯化的沙眼衣原体RNA聚合酶和纯化的大肠杆菌全酶在启动子特异性上显示出一些差异。

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