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Nucleic Acids Research, 1978, Vol. 5, No. 6 1907-1917
© 1978

Articles

Transcription of DNA-histone complexes by yeast RNA polymerase B

L.K. Karagyozov, M.A. Valkanov and A.A. Hadjiolov

Department of Molecular Genetics, Institute of Molecular Biology, Bulgarian Academy of Sciences Sofia, Bulgaria

Received April 5, 1978. Transcription of denatured DNA complexed with histones ( total, H1 or H2A/H2B/H3/H4 ) by yeast RNA polymerase B is investigated. Binding of histones to DNA restricts its template activity by decreasing the formation of active, heparin-resistant, RNA polymerase initiation complexes. The elongation of pre-initiated RNA on denatured DNA, complexed with histones, is possible, although resulting in somewhat shorter RNA chains. It is suggested that RNA polymerase B can elongate on a DNA strand covered with histones.


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