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It is controlled by operator – suppressor
Stimulates transcription: lac operon
Three lactose-metabolizing proteins of E. coli
called the lac operon. like us
Now looking at this, RNA polymerase can bind to
May be promoter and protein suppressor
Connect with the operator.
The suppressed protein has two bonds
Sites: one for the operator and the other
Triggers of the lac operon, e.g.
We know molecules of lactose and some others—galactosides. Binding to an inductor changes the shape of the suppressor (by allosteric changes.
Locke Oberon’s genes. The mRNA translated from these genes is then translated into ribosomes to assemble the three proteins required for lactose metabolism.
What happens if the lactose concentration is decreased? When the lactose concentration is reduced, the induction (lactose) molecules dissociate from the inhibitors. no lactose
the molecule binds the repression operator back to its original form, and
Transcription of Locke Oberon stopped. translation stopped soon
Existing mRNA is degraded.
so soon, is it happening or not
lactose – stimulation – control
tying the compressor to the operator, and
hence the set of proteins
necessary for metabolism.
Repressive proteins are encoded by regulatory genes. regulatory gene that encodes
Shape change prevents suppression
Binding operator . As
As a result, the RNA polymerase binds to the adsorbent and begins to translate the structure.
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