Laci · 360 amino acids · evidence at protein level · annotation score: According to this article, a single laci gene copy gives rise to about 10 copies of laci protein per cell, and we can conclude, therefore, that this is the amount required to keep a single lac operon repressed.
The Lac Operon (Article) | Khan Academy
Hence the correct option is (b) learn more:
Lac i gene. These are of different types: Contains the genes coding for three enzymes and is flanked by a repressor and a promoter region to control expression. Finally, laca encodes galactoside acetyltransferase.
When the repressor binds to the operator, the lac genes can't be transcribed. What makes the lac operon turn on? The structural gene for the lac repressor of escherichia coli, the laci gene has been sequenced.
It consists of a promoter, i gene that repress the lac operon and an operator. A regulatory gene laci (i) preceding the lac operon is responsible for producing a repressor (r) protein. Coli bacteria can break down lactose, but it's not their favorite fuel.
This 1,080 base pair region of the e. Solution structure and dynamics of the complex of a dimeric lac repressor dna binding domain with nonspecific dna The lac operon consists of:
Structure of the lac operon. The lac operon encodes genes that need to acquire and process the lactose from the local environment. The lactose operon (also known as the lac operon) is a set of genes that are specific for uptake and metabolism of lactose and is found in e.
In addition to structural genes, the lac operon also contains a number of regulatory dna. Lac op·er·on ( lahk ), a collection of adjacent bacterial genes responsible for the entry and metabolism of lactose; Explain how thelacoperon gets activated and begins transcription.
0 (0) (0) (0) related questions & answers Lac i gene is used as an regulatory gene induced. For transcription to happen, the repressor first has to be inactivated.
I, p, o, lac z, lac y. What is the inducer and how. The lac operon contains an operator, promoter and structural genes which are transcribed together and are under the control of the repressor.
Operon is a cluster of structural genes found as a group. Lac i gene codes for a protein that represses or inhibits transcription of the lac operon. The genes in the operon encode proteins that allow the bacteria to use lactose as an energy source.
Lactose operon repressor · escherichia coli (strain k12) · gene: Coli chromosome codes for the lac repressor protein of 360. The lac operon is an operon, or group of genes with a single promoter (transcribed as a single mrna).
The lac operon consists of a promoter (p) and operator (o) region followed by three structural genes lacz, lacy, and laca in the downstream. The lac operon is an inducible operon that utilizes lactose as an energy source and is activated when glucose is low and lactose is present. Ligation of this fragment into eco ri cleaved pmb9 yielded chimeric dna molecules of mol.w.t.9.6 · 10 6 and 1.5 · 10 7 daltons.
Is thelac i gene a constitutive or an induced gene? Correct option is b) lac operon is a operon that is required for transport and metabolism of lactose in e.coli. It does this by binding to the operator, which partially overlaps with the promoter.
Lac i gene is used as an regulatory gene induced. Lac operon was this answer helpful?
The Lac Operon (Article) | Khan Academy
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