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Transcription Factors

Basal Transcription Factors Bind To The Gene Promoter Region, Gene-specific Factors Differentially Enhance Transcription Rates

Transcription factors are protein complexes that help RNA polymerase bind to DNA. RNA polymerase is the enzyme that transcribes genes to make messenger RNA, which is then used to make protein. By controlling RNA polymerase's access to the gene, transcription factors control the rate at which a gene is transcribed. Without transcription factors, cells would not be able to effectively regulate the rate at which genes are expressed.

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Medicine EncyclopediaGenetics in Medicine - Part 4