Chapter 17

Initiation. Transcription begins when an RNA polymerase II binds to a DNA sequence known as the promoter. The promoter consists of a nucleotide sequence about 25 – 35 nucleotides upstream of the transcription start site. This sequence contains the nucleotide sequence TATA followed by one or more A (adenine) nucleotides. In eukaryotes, a collection of proteins called transcription factors ... ................
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