Nucleic acid mediated electron transfer
First Claim
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1. A method of detecting the presence of a sequence in a nucleic acid sample, said method comprising:
- a) applying an input signal to said sample, wherein said sample comprises;
i) a hybridization complex comprising;
1) a single stranded probe nucleic acid;
2) a target nucleic acid sequence;
wherein said hybridization complex comprises an electrode and at least one covalently attached electron transfer moiety; and
ii) an electron transfer mediator that will shuttle electrons between said electrode and said electron transfer moiety; and
b) detecting electron transfer between said electrode and said electron transfer moiety using said mediator to transfer electrons, wherein the presence of electron transfer is an indication of the presence of said target sequence.
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Abstract
The present invention provides for the selective covalent modification of nucleic acids with redox active moieties such as transition metal complexes. Electron donor and electron acceptor moieties are covalently bound to the ribose-phosphate backbone of a nucleic acid at predetermined positions. The resulting complexes represent a series of new derivatives that are bimolecular templates capable of transferring electrons over very large distances at extremely fast rates. These complexes possess unique structural features which enable the use of an entirely new class of bioconductors and photoactive probes.
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12 Claims
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1. A method of detecting the presence of a sequence in a nucleic acid sample, said method comprising:
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a) applying an input signal to said sample, wherein said sample comprises;
i) a hybridization complex comprising;
1) a single stranded probe nucleic acid;
2) a target nucleic acid sequence;
wherein said hybridization complex comprises an electrode and at least one covalently attached electron transfer moiety; and
ii) an electron transfer mediator that will shuttle electrons between said electrode and said electron transfer moiety; and
b) detecting electron transfer between said electrode and said electron transfer moiety using said mediator to transfer electrons, wherein the presence of electron transfer is an indication of the presence of said target sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification