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RNA polymerase II transcription factors H4TF-1 and H4TF-2 require metal to bind specific DNA sequences
L Dailey1, S B Roberts, N Heintz
1Laboratory of Biochemistry and Molecular Biology, Rockefeller University, New York, New York 10021.
Molecular and Cellular Biology
|December 1, 1987
Abstract:
Specific DNA-binding and in vitro transcription activities of H4TF-1 and H4TF-2 are inactivated by chelating agents. Binding activity is restored by addition of Zn2+, and H4TF-2 is also reactivated by Fe2+. In contrast, preformed factor-DNA complexes are resistant to chelators. Therefore, metal ions are a required component of the H4TF-1 and H4TF-2 DNA-binding domains.