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What turns off transcription by binding to the operator?
A repressor protein turns off transcription by binding to the operator region. By binding to the operator, the repressor prevents the RNA polymerase from binding to the promoter region and initiating transcription. This prevents the expression of the gene or genes downstream of the operator.
What is a repressible operon?
is one that is usually on; binding of a repressor to the operator shuts off transcription
The lac repressor releases the operator in the presence of glucose?
chickens and hens.
If a specific kind of protein is not continually used by a cell the gene for that protein is?
the gene is never expressed. ^^^^ this guy is a frickin idiot. and this would more of be in the cells/ biology section. What happens is a repressor binds to the operator and turns off the gene so the protein doesn't get made. and when its needed the repressor detaches and the gene is turned back on. ( this all happens on a strand of DNA )
In E. coli the tryprophan switches off the trp operon by?
Binding to the repressor and increasing the latter's affinity for the operator
Synthesis of a repressible enzyme is inhibited by?
The corepressor-repressor binding to the operator stops the repressible enzyme synthesis. The rate of production of repressible enzyme can be stopped or inhibited if a substance is in high concentration.
What is Corepressor and their function?
The metabolite that when bound to the repressor (of a repressible operon) forms a functional unit that can bind to its operator and block transcription.
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.
A protein that binds to an operator and inhibits transcription?
A repressor protein, also called an Inhibitor.
Which region of the operon does the repressor bind to?
It binds to the operator.
A lac repressor turns ff the lac genes by binding to?
A lac repressor turns off the lac genes by binding to the operator
What turns off transcription by binding to the operator?
A repressor protein turns off transcription by binding to the operator region. By binding to the operator, the repressor prevents the RNA polymerase from binding to the promoter region and initiating transcription. This prevents the expression of the gene or genes downstream of the operator.
In prokaryotes a protein that binds to the operator and blocks the prometer is called?
Repressor
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
Synthesis of an inducible enzyme requires?
Substrate bound to a repressor Chris G.
Why is the tryptophan operon turned off in the presence of tryptophan?
Tryptophan binds to and activates the repressor proteins; the repressor proteins, in turn, bind to the operator, preventing transcription.
What is a repressible operon?
is one that is usually on; binding of a repressor to the operator shuts off transcription
