BioScience Dictionary

 
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Found Catabolite repression 1 time.

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1. Catabolite repression
A positive repression process in cellular transcription , in which RNA polymerase binds poorly to the operon 's promoter . The binding of CRP and cAMP to the promoter causes RNA polymerase to bind more effectively and initiate transcription. Active constituents of this process are cAMP and CRP .