Gene Expression and the Genetic Code Video Lessons

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Problem: What is an activator how does it act?What is a repressor how does it act?

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Activator: Activator are proteins that promotes the expression of genes. During gene expression, activator interract with DNA at the promoter site. One example as seen in Lac operon, cAMP act as activator, it bind at promoter site and facilitate the binding of RNA polymerase to DNA.

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What is an activator how does it act?

What is a repressor how does it act?

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