Plant Biotechnology and Genetics: Principles, Techniques and Applications

(Brent) #1

Figure 6.6.Overview of the early steps of transcription. A preinitiation complex is formed by a
complex of transcription factors and RNA polymerase II (RNAP II). Association of the preinitiation
complex with the start sequence (TATA) of the coding strand of DNA causes a conformation change
and hydrogen bond breakage. This causes the DNA strands to separate so that transcription can
proceed.

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