6. In the figure below, the orange protein cannot bind to the DNA when the small

Question

6. In the figure below, the orange protein cannot bind to the DNA when the small compound is present. A. Label the allosteric site on the transcription factor. aluo ster c B. Label the DNA binding domain on the transcription factor ONa Binding C. Using the information in the figures above, would you categorize the small compound above as increasing or decreasing transcription factor activity? decreabing D. If this transcription factor was an "activator", what effect would the small compound have on gene expression? E. If this transcription factor was an "repressor", what effect would the small compound have on gene expression? 100

Explanation / Answer

D. If the transcription factor is an activator, then it means it positively regulates the gene expression. With the binding of this transcription factor, gene expression will begin. If small compound binds to this transcription factor, the binding to the DNA will be inhibited, and gene expression will be inhibited.

E. If the transcription factor is a repressor, then binding of this to a DNA will repress the gene expression. The presence of small compound will inhibit the binding of transcription factor to the DNA, so gene expression will not be interrupted. So expression of gene will be there

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