The differences between these two types of operons are significant. In the repressible operon, The product is the regulatory metabolite and starts in the "on" position allowing RNA primase to unzip mRNA. Also the repressor protein only bings to the operator gene in the presence of the regulatory metablite. In the inducible operon, The reactact is the regulartory metabolite and starts in the off position blockig the primase from unzipping mRNA. The repressor protein only binds to the operator gene in the absence of the regulatory metabolite.
Iducible-operons that are normally turned off but can be turned on
Repressible- operons that are typically activated, but can be turned off.
turned off whenever tryptophan is added to the growth medium.
operon are the cluster of genes which are present to each other and having functions in realted manner as one gene is promoter which promote the function of other genes and one is operator which operates the function of structural genes whcih either synthesize certain enzyme or protein. operon can be inducible or non-inducible and negatie or positive control
No
Operons appear most in prokaryotes, however can also be found in some eukaryotic organisms such as the nematode. The nature of this is because operons produce polycistronic mRNA, which is used mostly by bacteria, whereas eukaryotes use monocistronic mRNA.
Activators
The two types of operons are Inducible and Repressible Operons.
turned off whenever tryptophan is added to the growth medium.
operon are the cluster of genes which are present to each other and having functions in realted manner as one gene is promoter which promote the function of other genes and one is operator which operates the function of structural genes whcih either synthesize certain enzyme or protein. operon can be inducible or non-inducible and negatie or positive control
No
Operons appear most in prokaryotes, however can also be found in some eukaryotic organisms such as the nematode. The nature of this is because operons produce polycistronic mRNA, which is used mostly by bacteria, whereas eukaryotes use monocistronic mRNA.
One way that protein synthesis differs between prokaryotes and eukaryotes is that gene groups that produce proteins are organized into operons in prokaryotes, but they are not organized into operons in eukaryotes. Also, protein synthesis in eukaryotes involves more protein and is a more intricate process than in prokaryotes.
understanding of how operons are controlled was achieved by the "knockout" mutants- that each lacked one of the genes in the operons and its regulatory region.
Eukaryotic DNA sequences called enhancers have a function similar to the operators of prokaryotic operons. In eukaryotic cells, repressor proteins inhibit transcription by binding to silencers.
No, prokaryotes do not have introns, and therefore do not do RNA processing. However, eukaryotes do.
Activators
They are operons. The genes contained in an operon are expressed together or not at all.
inducer