11. Operons are also found in viruses such as bacteriophages.12. It is a transcription factor, inducing the transcription of the vir operons . 13. RNA polymerase can then begin to transcribe operon genes. 14. This allows the process of translation to directly affect transcription of the operon . 15. Spot 42 RNA mediates discoordinate expression of the E . coli galactose operon . 16. At least 6 amino acid operons are known to be regulated by attenuation. 17. Nitrogen starvation upregulates the curdlan operon and increases the rate of curdlan synthesis. 18. This process can also refer to the positive control of the lac operon . 19. Arsenic chaperone, ArsD, encoded by the arsRDABC operon of Escherichia coli. 20. LexA binds to the promoter of the UmuDC operon and inhibits gene transcription.
