Sequence-specific binding polymers for duplex nucleic acids
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United States of America Patent
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Apr 11, 1995
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Nov 23, 1992
filing date -
Dec 20, 1989
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Abstract
The present invention describes a polymer composition effective to bind, in a sequence-specific manner to a target sequence of a duplex polynucleotide, at least two different-oriented Watson/Crick base-pairs at selected positions in the target sequence. The composition includes an uncharged backbone with 5- or 6-membered cyclic backbone structures and selected bases attached to the backbone structures effective to hydrogen bond specifically with different oriented base-pairs in the target sequence. Also disclosed are subunits useful for the construction of the polymer composition. The present invention further includes methods for (i) coupling a first free or polymer-terminal subunit, and (ii) isolating, from a liquid sample, a target duplex nucleic acid fragment having a selected sequence of base-pairs.
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