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A regulator gene encodes for a repressor protein, which can bind to specific DNA sequences to inhibit the expression of target genes. The repressor protein acts as a transcription factor by preventing RNA polymerase from binding to the promoter region of the target gene, thereby regulating its expression.
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What state is the repressor protein in when tryptophan is absent?
When tryptophan is absent, the repressor protein is in an inactive state, allowing transcription of the trp operon to continue. This is because the repressor protein needs tryptophan to bind to it, enabling it to attach to the operator region and block transcription of the operon.
What happens to the repressor protein when it's not functioning?
When the repressor protein in not functioning then the gene that that protein was blocking will be "turned on". BTW its not right to cheat, even on study guides ;)
The lac repressor releases the operator in the presence of glucose?
That statement is inaccurate. The lac repressor releases the operator in the absence of glucose but in the presence of lactose. Glucose acts as a catabolite activator protein (CAP) regulator in the lac operon system.
The presence of a repressor protein prevents the action of what enzyme?
The presence of a repressor protein prevents the action of RNA polymerase, which is responsible for transcribing DNA into RNA. By binding to specific regions on DNA, the repressor protein inhibits RNA polymerase from accessing the gene and initiating transcription.
How is the trp repressor protein and allosteric protein?
If Tryptophan is low in the diet, the repressor changes shape and allows the RNA polymerase to attach and copy the DNA so that Tryptophan can be produced by the cell.
A repressor protein binds with?
The regulator
The operon segment composed of the gene that codes for a protein repressor is called the?
The operon segment composed of the gene that codes for a protein repressor is called the regulatory gene. This gene produces the repressor protein that can bind to the operator region of the operon, preventing transcription of the structural genes when the repressor is bound.
What state is the repressor protein in when tryptophan is absent?
When tryptophan is absent, the repressor protein is in an inactive state, allowing transcription of the trp operon to continue. This is because the repressor protein needs tryptophan to bind to it, enabling it to attach to the operator region and block transcription of the operon.
This protein is produced by a regulatory gene?
a repressor protein
What happens to the repressor protein when it's not functioning?
When the repressor protein in not functioning then the gene that that protein was blocking will be "turned on". BTW its not right to cheat, even on study guides ;)
The lac repressor releases the operator in the presence of glucose?
That statement is inaccurate. The lac repressor releases the operator in the absence of glucose but in the presence of lactose. Glucose acts as a catabolite activator protein (CAP) regulator in the lac operon system.
When is the repressor protein transcribed?
The repressor protein is transcribed when the gene coding for it is activated. This often occurs in response to specific signals or conditions in the cell. The repressor protein then acts to regulate the expression of other genes in the cell by binding to specific DNA sequences.
What is a gene regulation?
The regulator gene produces repressor protein.
The presence of a repressor protein prevents the action of what enzyme?
The presence of a repressor protein prevents the action of RNA polymerase, which is responsible for transcribing DNA into RNA. By binding to specific regions on DNA, the repressor protein inhibits RNA polymerase from accessing the gene and initiating transcription.
How is the trp repressor protein and allosteric protein?
If Tryptophan is low in the diet, the repressor changes shape and allows the RNA polymerase to attach and copy the DNA so that Tryptophan can be produced by the cell.
A protein that binds to an operator and inhibits transcription?
A repressor protein binds to the operator region of DNA to inhibit the binding of RNA polymerase, blocking transcription of the gene. This mechanism is common in prokaryotic organisms to regulate gene expression by preventing transcription of specific genes when they are not needed.
In prokaryotes a protein that binds to the operator and blocks the prometer is called?
Repressor
