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- A DNA-binding protein in prokaryotes that blocks gene transcription by binding to the operator.
Susan Allender-Hagedorn and Charles Hagedorn - Cite This Source - This Definition
- A protein which binds to a specific DNA sequence upstream from the transcription initiation site of a gene and prevents RNA polymerase from commencing mRNA synthesis.
UN Food and Agriculture Organization - Cite This Source - This Definition
- aflatoxins, CAAT box, Promoter, repression, sigma factor