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Published April 12, 1989 | public
Journal Article

Triple helix formation by oligonucleotides on DNA extended to the physiological pH range

Abstract

We report here that oligodeoxyribonucleotides which contain 5-bromouracil (Br^5U) and 5-methylcytosine (m^5C) bind duplex DNA at the same homopurine target sequence as their T/C analogues but with greater affinities and over an extended pH range. Oligonucleotides containing uracil (U) bind with lower affinity (Figure 1).

Additional Information

© 1989 American Chemical Society. Received September 16, 1988. We are grateful to the National Institutes of Health (GM 35724), Office of Naval Research for grant support (Contract N00014-88-K-0441) and to the National Science Foundation for a predoctoral fellowship to T.J.P.

Additional details

Created:
August 19, 2023
Modified:
October 18, 2023