When an activator protein interacts with a mediator protein, how does it affect the function of...
When an activator protein interacts with a mediator protein, how does it affect the function of RNA polymerase?
Homework Answers
Answer:
- Mediator acts as a coactivator. It is a protein which interacts with preinitiation complex. Preinitiation complex is composed of RNA polymerase and basal transcription factors.
-
To stabilize this Complex and to initiate transcription, mediator binds to this preinitiation complex.
Mediator sends signal to transcription factors so as to to stabilize the complex. It stabilizes the RNA transcript formed after transcription. - . It causes loops in chromatin so as to bring together the distantly located genes and regulatory region so that they can interact and undertake transcription.
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When an activator protein interacts with a mediator protein, how
does it affect the function of...
In positive control, the function of the activator molecule is to increase the affinity of RNA...
In positive control, the function of the activator molecule is to increase the affinity of RNA polymerase to the promoter. bind with repressor molecules to prevent them from blocking the operator. increase the affinity of the inducer molecule to the promoter. bind with inducer molecules to increase their affinity to the promoter.
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3. The CAP activator protein and the Lac repressor both control the Lac operon (see Figure...
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2.) Activator and helper. Figure 19.29B gives the fold change for a genetic network with an...
2.) Activator and helper. Figure 19.29B gives the fold change
for a genetic network with an activator and helper. However, it
contains several mistakes that we will fix here.
a.) Derive the formula for the fold change under the assumptions
of a weak promoter and �!"# $% ≫ �. Show that the fold change is
given by the formula below rather than that in the book. Hint: The
schematic in Figure 19.29B should be helpful in determining the
states and...
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Imagine protein X is a protein that is secreted out of the cell. How does the cell "know" that protein X needs to be synthesized at the endoplasmic reticulum (ER)? A.The DNA that codes for protein X has a sequence of nucleotides that bind to a special protein/RNA complex B. The ribosome that translates protein X has a sequence of nucleotides that bind to a special protein/RNA complex C. Protein X has a sequence of amino acids that bind to...
3. The CAP activator protein and the Lac repressor both control the Lac operon (see Figure 28-14). Fill out the table below with No expression, Low/Medium expression, or High expression to summarize when the Lac operon will be expressed in each of the three E. coli strains in the table. An example has been done for you. RNA polymerase- binding site (promoter) CAP binding site start site for RNA synthesis operator Lacz gene -80 -40 14080 nucleotide pairs Figure 08-14...
2.) Activator and helper. Figure 19.29B gives the fold change
for a genetic network with an activator and helper. However, it
contains several mistakes that we will fix here.
a.) Derive the formula for the fold change under the assumptions
of a weak promoter and �!"# $% ≫ �. Show that the fold change is
given by the formula below rather than that in the book. Hint: The
schematic in Figure 19.29B should be helpful in determining the
states and...
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