Rna transcripts of lactose-utilizing genes within e. coli indicates the presence of lactose.
What is operon?
- An operon is a collection of genes that all share a single promoter during transcription, found in bateria.
- There are regulatory DNA sequences in every operon, and these sequences serve as binding sites for regulatory proteins that either encourage or hinder transcription.
- Regulatory proteins frequently attach to tiny molecules, which can alter the protein's capacity to bind DNA and turn it on or off.
- Some operons are inducible, which means that a specific tiny molecule can activate them. Others can be turned off by a single molecule and are repressible, which means they are switched on by default.
- one example of operon is Lac operon of E. coli contains genes involved in lactose metabolism. It's expressed only when lactose is present and glucose is absent.
Learn more about the Lac operon with the help of the given link:
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