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Chapter 15: Problem 3

What is meant by the term transcription factor modulation? List three general ways this can occur.

Short Answer

Expert verified
Transcription factor modulation refers to the regulation of activities of transcription factors. The three general ways this modulation can occur includes: 1. Via post-translational modifications such as phosphorylation, acetylation, methylation 2. Through interactions with other proteins and 3. Changes in their localization within the cell.

Step by step solution

01

Understanding Transcription Factor Modulation

Transcription factor modulation refers to the regulation of activities of transcription factors. These factors are proteins that bind to specific DNA sequences, thereby controlling the flow of genetic information from DNA to mRNA.
02

Listing Ways of Modulation: Way 1

The first way transcription factor modulation can occur is through Post-translational Modification (PTM). Some examples of PTM include phosphorylation, acetylation, and methylation. These processes help to turn on or off a transcription factor's ability to bind to DNA and initiate transcription.
03

Listing Ways of Modulation: Way 2

The second way transcription factor modulation can occur is through Interactions with other proteins. These proteins can either enhance or inhibit the ability of the transcription factor to bind to DNA and regulate gene expression. These partner proteins thus modulate the activity of transcription factors.
04

Listing Ways of Modulation: Way 3

The third way transcription factor modulation can occur is through changes in their Localization. Translocation of the transcription factor from the cytoplasm to the nucleus, for instance, can modulate its function.

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Most popular questions from this chapter

Explain how the acetylation of core histones may loosen chromatin packing.

Transcription factors usually contain one or more motifs that play key roles in their function. What is the function of the following motifs? A. Helix-turn-helix B. Zinc finger C. Leucine zipper

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Histones are thought to be displaced as RNA polymerase is transcribing a gene. What would be the potentially harmful consequences if histones were not put back onto a gene after RNA polymerase had passed?

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