SCAN0046 - y’/— Regulating Transcription Initiation...

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Unformatted text preview: y’/—\_ Regulating Transcription Initiation by__Repressors and Activators Modulates transcription in response to environmental change Possible Mechanisms - Component Perspective 1. Activate/enhance by activator and inducer i 3. Repress by repressor and co-repressor ’ln’WJ’W‘W‘ 1697168314“. 4. Repress by removing a bound activator with inducer [Jrrp U: ‘ Lactose Operon Paradigm ' example of both negative regulator — lac repressor Nil positive regulator - CRP (CAP) AME; Lac operon - 3 genes, codes for enzymes that are part of lactose metabolism. Also have adjacent lactose repressor gene lacA ~11 I: Me i )W‘S“wtlw’ regret 524"“ € ’ fifl‘w‘lfi‘m l l! it‘d: perfiwfi, z” A 2.1 3. F1 E15: ...
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