Which of the following would you expect to find in an inducible system?

  • A

    A repressor protein, which is bound to $DNA$ in absence of any other factor.

  • B

    A repressor protein, which is bound to $DNA$ in the presence of a corepressor.

  • C

    An activator protein, which is bound to $DNA$ in the absence of any other factor.

  • D

    An activator protein, which is bound to $DNA$ only in the absence of air inhibitor.

Similar Questions

Which enzyme / enzymes are responsible for transformation of lactose to galactos in the E.coli culture medium.

Write short note on lac operon
 

An environmental agent that triggers transcription from an operon is a:

$A$ : Operator gene is functional when it is not blocked by repressor.
$R$ : Regulator gene produces active protein only which acts on operon system in $E$.coli

Lactose operon produces enzymes