Immobilized nucleic acid complexes for sequence analysis
First Claim
1. A method of sequencing a nucleic acid, the method comprising:
- fixing a template nucleic acid to a solid surface through a template localizing moiety, wherein the template localizing moiety topologically encircles the template such that the template can move through the template localizing moiety;
sequencing a portion of at least one strand of the template nucleic acid with a first sequencing enzyme;
exchanging the first sequencing enzyme with a second sequencing enzyme; and
,continuing sequencing of the strand with the second sequencing enzyme.
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Accused Products
Abstract
Provided are methods for sequencing a nucleic acid that include fixing a template to a surface through a template localizing moiety and sequencing the nucleic acid with a sequencing enzyme, e.g. a polymerase or exonuclease. The sequencing enzyme can optionally be exchanged with a second sequencing enzyme, which continues the sequencing of the nucleic acid. The template localizing moiety can optionally anneal with the nucleic acid and/or associate with the sequencing enzyme. Also provided are compositions comprising a nucleic acid fixed to a surface via a template localizing moiety, and a first sequencing enzyme, which can sequence the nucleic acid and optionally exchange with a second sequencing enzyme present in the composition. Compositions in which a template localizing moiety is immobilized on a surface are provided. Compositions for sequencing reactions are provided. Also provided are sequencing systems comprising reaction regions in which or near which template localizing moieties are immobilized.
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Citations
15 Claims
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1. A method of sequencing a nucleic acid, the method comprising:
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fixing a template nucleic acid to a solid surface through a template localizing moiety, wherein the template localizing moiety topologically encircles the template such that the template can move through the template localizing moiety; sequencing a portion of at least one strand of the template nucleic acid with a first sequencing enzyme; exchanging the first sequencing enzyme with a second sequencing enzyme; and
,continuing sequencing of the strand with the second sequencing enzyme. - View Dependent Claims (2, 3, 7, 8, 12, 14)
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4. A method of sequencing a template nucleic acid, the method comprising:
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fixing a circular template nucleic acid to a solid surface through a template localizing moiety, wherein the template localizing moiety topologically encircles the template such that the template can move through the template localizing moiety; annealing an oligonucleotide primer to the template nucleic acid; initiating template-directed nascent strand synthesis by a polymerase that is not immobilized to the solid surface; synthesizing a nascent strand complementary to the template nucleic acid with the polymerase detecting incorporations of nucleotides into the nascent strand, wherein a temporal sequence of the incorporations is indicative of the sequence of the nucleic acid. - View Dependent Claims (5, 6, 9, 10, 11, 13, 15)
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Specification