Amperometric affinity assay and electrically stimulated complexes of nucleic acids
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United States of America Patent
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Sep 2, 2003
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app pub date -
Nov 29, 2001
filing date -
Jan 24, 2000
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Abstract
A method for determining an affinity of a first nucleobase-containing sequence for a second nucleobase-containing sequence includes providing a test medium containing the first nucleobase-containing sequence and the second nucleobase-containing sequence, applying a voltage across the test medium, measuring a test electric current through the test medium; and determining the affinity by evaluating whether the test electric current is equivalent to a reference electric current of a reference medium containing a longer of the first nucleobase-containing sequence and the second nucleobase-containing sequence. A complex in an electrically-stimulated phase contains at least two nucleobase-containing sequences in a medium, wherein the electrical conductivity of the medium increases linearly without a plateau as the temperature of the medium approaches and exceeds a Tm of the complex.
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