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The regulator
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∙ 15y ago
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A protein that binds to an operator and inhibits transcription?
A repressor protein, also called an Inhibitor.
In prokaryotes a protein that binds to the operator and blocks the prometer is called?
Repressor
When this is taken up by the cell it binds to the repressor so that the repressor no longer binds to the operator?
The inducer.
How do repressors affect promoters?
a repressor is a protein that binds to DNA, which turns off the genes that code for the digestive enzymes. the promoter, located near the digestive enzyme genes, is a section on DNA that serves as the binding site for the enzyme RNA polymers.
Describe the effect a repressor has on the lac operon when lactose is present?
When lactose is present, the lactose binds to the repressor and changes the shape of the repressor.
The role of a metabolite that controls a repressible operon is to?
The role of a metabolite that controls a repressible operon is to
What state is the repressor protein in when tryptophan is absent?
The repressor protein is inactive.
When lactose is present in bacterial does it prevent the blocking effect of the repressor protein and allow the transcription of lactose metabolizing genes?
Yes. A precursor to lactose binds to the repressor and prevents or relaxes its binding to the Lac operon.
What is an aporepressor?
An aporepressor is a repressor which binds with a corepressor.
When the lac repressor protein binds to the?
The other region is the OPERATOR (O) e coli cells contains several copies of a DNA binding proteins known as the lac repressor, which can be bind to the O region your answer: Operator
Which region of the operon does the repressor bind to?
It binds to the operator.
The expression of the tryptophan operon is controlled by?
a repressor that is active when it binds to tryptophan
