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How is the lac operon regulated if the bacteria is put into an environment where there...

How is the lac operon regulated if the bacteria is put into an environment where there is very low amount of lactose and glucose at the same time.

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Answer #1

Lac operon -

It is also known as lactose operon

It's an operon used for transport and metabolism of lactose in most of the enteric Bacteria

It's regulation depends on factors like

- availability of glucose

- availability of lactose

In low lactose level environment - Transcription of lac operon is prevented . This is because repressor protein binds to the operator region ( as lactose is low and it do not bind to operator region )

In low glucose level environment - CAMP is produced leading to the activation of CAP protein which binds to the promoter region of the DNA

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