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Prokaryotic Gene Regulation:
Prokaryotes are delicate to their environment. Their genetic activities are controlled by specific proteins concerned. Genetic regulation is processes where genotypes are coded in the genes are expressed in their respective phenotypes. The RNA then copies DNA and then synthesize it into protein. So the mechanism of prokaryotic gene regulation is thus explained by operon model by Molecular Mechanism of Prokaryotic Gene Regulation and RNA Interference in Eukaryotes Assignment Help.
An operon is a series of genes that functions in the group and controls the protein synthesis. But these operons do not code for proteins. This is called the promoter and the operator. The operon model is probably the most famous and studied the most which Molecular Mechanism of Prokaryotic Gene Regulation and RNA Interference in Eukaryotes Homework Help explains below:
- The operon codes for three different enzymes which are required for breaking down a simple sugar. A regulatory gene which is present just before the operon.
- This synthesizes a repressor protein which gets attached to the operator and prohibits the activity of RNA polymerase.
- The process continues until the overflow of lactose molecules takes place which gets connected with all other available repressors.
- Breaking down of lactose is carried on until adequate lactose molecules are broken down. The repressor is active when attached to a particular
- It usually remains unattached and inactive in the absence of that molecule. Finally, the activator’s bond directly with the DNA and permits the RNA polymerase to work more efficiently. RNA polymerase proceeds at a slow rate if the activators are absent.
RNA Interference in Eukaryotes:
RNA interference in eukaryotic cells regulates the activities of the gene. Its function is to suppress or deactivate the genes. So the mechanism of gene interference is elucidated as follows by our Molecular Mechanism of Prokaryotic Gene Regulation and RNA Interference in Eukaryotes Assignment Help:
- The attachment of the two RNAs repressed for the conversion of the mRNA molecules into proteins.
- After injecting RNA into the cells, DNA produces mRNA this in turn causes a natural genetic phenomena called gene silencing.
- Then the transfer of RNA from the nucleus it is slashed into a mature miRNA catalyzed by an enzyme. The miRNA molecule then muddles to an RNA-induced silencing complex.
- miRNA-RISC complex is what we acquire. It then attacks the directed spots on the mRNA molecule which efficiently makes the gene inactive.
- RNAi plays avital part not only in amending genes but also in producing cellular resistance against RNA virus’s contagion, influenza viruses and further more viruses that causes rabies.
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