0
What is the function of allolactose in the operations of the lac operon?
Wiki User
∙ 11y ago
allolactose acts as an inducer
Eloise Kuphal
Wiki User
∙ 11y agoAllolactose binds to an allosteric site on the repressor protein leading to a conformational change. This change hinders the binding of the repressor to the operator region. Once the repressor falls off, RNA polymerase is able to bind to the promoter region and transcribe the lac gene.
Imoesi Peter Ikhianosimhe aka Pethiano Peters.
Molecular Biologist/Biochemist
University of Hertfordshire, England.
Twitter: @pethianopeters
Wiki User
∙ 12y agoallolactose acts as an inducer
Add your answer:
Earn +20 pts
What is allolactose and how does it work?
Allolactose isca sugar, isomeric with lactose, that is the true inducer of the lac operon. An agent capable of activating specific genes. A molecule that inhibits the action of the repressor of an operon, preventing it from freely binding with the operator gene and disabling its function.
What is lac operon in E. coli?
The lac operon is a place on the DNA that binds to the DNA to stop the production of the RNA sequence to code for lactase (breaks down lactose) or binds to lactase to let the production of the RNA sequence to proceed.
The operon that controls the metabolism of lactose is called the what?
its an operon required for the transport and metabolism of lactose.
Why lac operon the gene expression is switch off?
explain the regulation of gene expression in lac operon.
Is the lac operon found in prokaryotes or eukaryotes?
The lac operon is found in enteric bacteria, predominantly Escherichia coli, therefor it is found in prokaryotes.
What are the roles of allolactose in the lac operon and tryptophan in trp operon?
allolactose acts as an inducer
What is allolactose and how does it work?
Allolactose isca sugar, isomeric with lactose, that is the true inducer of the lac operon. An agent capable of activating specific genes. A molecule that inhibits the action of the repressor of an operon, preventing it from freely binding with the operator gene and disabling its function.
What is lac operon in E. coli?
The lac operon is a place on the DNA that binds to the DNA to stop the production of the RNA sequence to code for lactase (breaks down lactose) or binds to lactase to let the production of the RNA sequence to proceed.
When does the induction of the lac operon occur?
The lac operon is most active when glucose levels are low and lactose is present.
What turns the lac operon on and off?
The lac operon is turned off and on by repressors.
The operon that controls the metabolism of lactose is called the what?
its an operon required for the transport and metabolism of lactose.
Why lac operon the gene expression is switch off?
explain the regulation of gene expression in lac operon.
What is a clue that the lac operon is on?
The lac operon uses a two-part control mechanism to ensure that the cell expends energy producing the enzymes encoded by the lac operon only when necessary. In the presence of lactose, the lac repressor halts production of the enzymes encoded by the lac operon.
When is lac operon most active?
The lac operon is most active when glucose levels are low and lactose is present.
Is the lac operon found in prokaryotes or eukaryotes?
The lac operon is found in enteric bacteria, predominantly Escherichia coli, therefor it is found in prokaryotes.
How many genes in the lac operon are found in e. coli?
My answer is 3, I am pretty sure I am right, but I would double check to make sure. I am in ninth grade taking biology at PineTree.
What does the promoter of the lac operon sac do?
The promoter region of the lac operon is where the RNA polymerase begins to bind for the transcription of the structural gene Y and Z
