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In a negatively inducible operon, the regulatory protein is An inhibitor that is activated when a cofactor is present. An inh

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An inhibitor that is repressed when a cofactor is present

Negative repressible operons is when an inducer is need to bind to the operon to prevent transcription. Both ways prevent transcription, but the way the inducer is used in each case is opposite in both situations. WIth positive control, regulatory proteins are activators.The lac operon is an example of negative inducible operons. In the presence of lactose, the repressor binds to the proteing altering its shape so that it doesn’t bind to the lac operator, and transcription occurs.

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