Method for nucleic acid sequencing
First Claim
1. A method of incorporating nucleotides with a polymerase comprising;
- providing a polymerase-nucleic acid complex, the polymerase-nucleic acid complex comprising;
a nucleic acid comprising a circular template strand and a primer strand,a polymerase comprising a nucleic acid binding cleft, anda topological tether,wherein the topological tether is attached to the polymerase through at least two anchors that straddle the nucleic acid binding cleft, whereby the topological tether entraps the template strand in the nucleic acid binding cleft of the polymerase, andextending the primer strand by incorporating nucleotides to form a product strand complementary to the template strand of the nucleic acid.
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Abstract
The present invention provides novel compositions, methods and apparatus for DNA sequencing that can be performed, e.g., in a two-electrode chamber. The present invention also provides a method for sequencing a nucleic acid comprising immobilizing a plurality of complexes comprising a target nucleic acid, a primer nucleic acid, and a polymerase onto a surface, contacting the surface with a plurality of charged particles comprising a nucleotide phosphate by applying an electric field, reversing the electric field to transport unbound charged particles away from the surface, and detecting the incorporation of a nucleotide phosphate into a single molecule of the primer nucleic acid.
30 Citations
18 Claims
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1. A method of incorporating nucleotides with a polymerase comprising;
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providing a polymerase-nucleic acid complex, the polymerase-nucleic acid complex comprising; a nucleic acid comprising a circular template strand and a primer strand, a polymerase comprising a nucleic acid binding cleft, and a topological tether, wherein the topological tether is attached to the polymerase through at least two anchors that straddle the nucleic acid binding cleft, whereby the topological tether entraps the template strand in the nucleic acid binding cleft of the polymerase, and extending the primer strand by incorporating nucleotides to form a product strand complementary to the template strand of the nucleic acid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification