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Title: Transcriptional Regulation Problem(2) Post by: minjai0322 on Nov 16, 2010 Shown below is a co-transcription regulation found in E. coli. Such a segment of DNA forms a unit of transcription and has a name for it. What is that name? Show how lactose induces the transcription and show the transcript.
Title: Re: Transcriptional Regulation Problem(2) Post by: bio_man on Nov 16, 2010 What is that name? Show how lactose induces the transcription and show the transcript. It's called a Lac Operon...http://www.learn.ppdictionary.com/resources/The_Lac_Operon.swf Also, view this animation (linked below): Animation Two (http://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::535::535::/sites/dl/free/0072437316/120080/bio27.swf::Combination%20of%20Switches%20-%20the%20Lac%20Operon) Title: Re: Transcriptional Regulation Problem(2) Post by: karma on Nov 19, 2010 I would have thought there would be a poly A tail, because normally mRNA has it.
Title: Re: Transcriptional Regulation Problem(2) Post by: bio_man on Nov 19, 2010 I would have thought there would be a poly A tail, because normally mRNA has it. Prokaryotic mRNAs do not have a poly (A) tail at the 3' end. |