operon การใช้

• The trp operon is active only when cellular tryptophan is scarce.
• It is encoded by the lacY gene in the lac operon.
• The lugdunin genes are located on a 30-kbp operon.
• As in prokaryotes, genes in chloroplast DNA are organized into operons.
• Operon regulation can be either negative or positive by induction or repression.
• In lac-operon, there are three structural genes:
• The lactose operon is one example of an inducible system.
• Attenuation is a second mechanism of negative feedback in the trp operon.
• RNA polymerase is free to continue transcribing the entire operon.
• Trp operon encodes enzymes responsible for the synthesis of tryptophan.
• Operons are also found in viruses such as bacteriophages.
• It is a transcription factor, inducing the transcription of the vir operons.
• RNA polymerase can then begin to transcribe operon genes.
• This allows the process of translation to directly affect transcription of the operon.
• Spot 42 RNA mediates discoordinate expression of the E . coli galactose operon.
• At least 6 amino acid operons are known to be regulated by attenuation.
• Nitrogen starvation upregulates the curdlan operon and increases the rate of curdlan synthesis.
• This process can also refer to the positive control of the lac operon.
• Arsenic chaperone, ArsD, encoded by the arsRDABC operon of Escherichia coli.
• LexA binds to the promoter of the UmuDC operon and inhibits gene transcription.