Which of the following is true for a repressi | vedclass

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Question

(B) repressible operon is typically involved in anabolic pathways (e.g.,$trp$ operon). In its default state,the operon is $ON$ (transcription occurs).

Vedclass · Accepted Answer

Inactive repressor + Co-repressor = Active repressor

Vedclass · Answer

(B) repressible operon is typically involved in anabolic pathways (e.g.,$trp$ operon). In its default state,the operon is $ON$ (transcription occurs). When the end product (co-repressor) accumulates,it binds to the inactive repressor protein. This binding activates the repressor,which then binds to the operator to turn the operon $OFF$. Therefore,the correct mechanism is: Inactive repressor + Co-repressor = Active repressor.

Which of the following is true for a repressible operon?

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