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Biology, 06.04.2021 05:00 ili28

A 1.0-kb DNA fragment from the 5' end of the mouse gene is examined by DNA footprint protection analysis. Two samples are end-labeled with 32P, and one of the two is mixed with TFIIB, TFIID, and RNA polymerase II. Both samples are exposed to DNase I. The results are displayed below. The DNA exposed to proteins is run in the right-hand lane of the gel. Control DNA is in the left-hand lane. Required:
What length of DNA is bound by the transcriptional proteins?

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