Nucleic Acids Research, 1985, Vol. 13, No. 14 5157-5172
© 1985
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Changes of Chromatin conformation around mouse interferon-ß gene associated with induction of interferon synthesis
Department of Cellular and Molecular Virology, Institute for Virus Research, Kyoto University Sakyo-ku, Kyoto 606, Japan
Received March 21, 1985. Revised June 25, 1985. Accepted June 25, 1985.
Changes of chromatin structure around the mouse interferon-ß gene associated with induction were examined by the use of sensitivity to digestion with DNaseI. Upon induction, the DNaseI-sensitivity of mouse interferon-ß gene was increased and seven DNaseI-hypersensitive sites were mapped. One of them, which was located at approximately 100bp upstream and was insensitive in the uninduced state, showed a marked sensitivity upon induction. Four others, located at 580bp and 430bp upstream, and 1.9kb and 2.2kb downstream, whose levels of DNaseI-sensitivity were very low in the uninduced state, showed significant sensitivity in the induced state. Two remaining sites, located at 7.5kb upstream and 7.6kb downstream, had relatively high DNaseI-sensitivities even in the uninduced state and slightly increased their sensitivities upon induction.
*Present address: Department of Biochemistry, Cancer Institute, Japanese Foundation for Cancer Research, Kami-Ikebukuro, Toshima-ku, Tokyo 170, Japan
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