An operon is a genetic regulatory system found in prokaryotes and the bacterial viruses (bacteriophages) that attack bacteria. It is a cluster of genes that share regulatory elements and are usually functionally related. French scientists Jacques...

An operon is a single unit of physically adjacent genes that function together under the control of a single operator gene. With respect to transcription and translation, the genes within an operon code for enzymes or proteins that are functionally...

An operon is a single unit of physically adjacent genes that function together under the control of a single operator gene. The genes within an operon code for enzymes or proteins that are functionally related and are usually members of a single enzyme...

An operon is a functioning unit of key nucleotide sequences including an operator, a common promoter, and one or more structural genes, which are controlled as a unit to produce messenger RNA (mRNA), in the process of protein...

The first characterization of transcriptional, posttranscriptional, and translational processes of heterologous operons expressed via the tobacco (Nicotiana tabacurn) chloroplast genome is reported here. Northern-blot analyses performed on chloroplast transgenic lines harboring seven different heterologous operons revealed that polycistronic mRNA was the predominant transcript produced....

ABSTRACT Transcriptional regulatory networks allow bacteria to express proteins only when they are needed. Adaptive hypotheses explaining the evolution of regulatory networks assume that unneeded expression is costly and therefore decreases fitness, but the proximate cause of this cost is not clear. We...