Abstract: A method for separating a target allele from a mixture of nucleic acids by (a) providing a mixture of nucleic acids in fluidic contact with a stabilized ternary complex that is attached to a solid support, wherein the stabilized ternary complex includes a polymerase, primed nucleic acid template, and next correct nucleotide, wherein the template has a target allele, wherein the next correct nucleotide is a cognate nucleotide for the target allele, and wherein the stabilized ternary complex is attached to the solid support via a linkage between the polymerase and the solid support or via a linkage between the next correct nucleotide and the solid support; and (b) separating the solid support from the mixture of nucleic acids, thereby separating the target allele from the mixture of nucleic acids.

Abstract: Provided are compositions, methods and systems for determining the sequence of a template nucleic acid using a polymerase-based, sequencing-by-binding procedure. An examination step involves monitoring the interaction between a polymerase and template nucleic acid in the presence of one or more nucleotides. Identity of the next correct nucleotide in the sequence is determined without incorporation of any nucleotide into the structure of the primer by formation of a phosphodiester bond. An optional incorporation step can be used after the examination step to extend the primer by one or more nucleotides, thereby incrementing the template nucleotides that can be examined in a subsequent examination step. The sequencing-by-binding procedure does not require the use of labeled nucleotides or polymerases, but optionally can employ these reagents.

Abstract: A method for separating a target allele from a mixture of nucleic acids by (a) providing a mixture of nucleic acids in fluidic contact with a stabilized ternary complex that is attached to a solid support, wherein the stabilized ternary complex includes a polymerase, primed nucleic acid template, and next correct nucleotide, wherein the template has a target allele, wherein the next correct nucleotide is a cognate nucleotide for the target allele, and wherein the stabilized ternary complex is attached to the solid support via a linkage between the polymerase and the solid support or via a linkage between the next correct nucleotide and the solid support; and (b) separating the solid support from the mixture of nucleic acids, thereby separating the target allele from the mixture of nucleic acids.

Abstract: Method and apparatus to facilitate separation of solution-phase components surrounding an immobilized multicomponent complex while stabilizing association of the components within the complex. The technique can be used for reducing background signal arising from the presence of non-complexed components harboring detectable labels, thereby enhancing signal-to-background ratios and allowing enhanced detection of the multicomponent complex.

Abstract: Provided are compositions, methods and systems for determining the sequence of a template nucleic acid using a polymerase-based, sequencing-by-binding procedure. An examination step involves monitoring the interaction between a polymerase and template nucleic acid in the presence of one or more nucleotides. Identity of the next correct nucleotide in the sequence is determined without incorporation of any nucleotide into the structure of the primer by formation of a phosphodiester bond. An optional incorporation step can be used after the examination step to extend the primer by one or more nucleotides, thereby incrementing the template nucleotides that can be examined in a subsequent examination step. The sequencing-by-binding procedure does not require the use of labeled nucleotides or polymerases, but optionally can employ these reagents.

Abstract: Provided are methods and systems for detecting formation of nucleotide- specific ternary complexes comprising a DNA polymerase, a nucleic acid, and a nucleotide complementary to the templated base of the primed template nucleic acid. The methods and systems facilitate determination of the next correct nucleotide without requiring chemical incorporation of the nucleotide into the primer. This advantageously improves signal-to-noise ratios and increases the quality of results obtainable in a sequencing-by-binding protocol, and enables extended read lengths. These results can even be achieved in procedures employing unlabeled, native nucleotides.

Abstract: A method for separating a target allele from a mixture of nucleic acids by (a) providing a mixture of nucleic acids in fluidic contact with a stabilized ternary complex that is attached to a solid support, wherein the stabilized ternary complex includes a polymerase, primed nucleic acid template, and next correct nucleotide, wherein the template has a target allele, wherein the next correct nucleotide is a cognate nucleotide for the target allele, and wherein the stabilized ternary complex is attached to the solid support via a linkage between the polymerase and the solid support or via a linkage between the next correct nucleotide and the solid support; and (b) separating the solid support from the mixture of nucleic acids, thereby separating the target allele from the mixture of nucleic acids.

Abstract: A method for identifying target alleles, that includes steps of (a) forming a plurality of stabilized ternary complexes at a plurality of features on an array, wherein the stabilized ternary complexes each has a polymerase, a template nucleic acid having a target allele of a locus, a primer hybridized to the locus, and a next correct nucleotide having a cognate in the locus, wherein either (i) the primer is an allele-specific primer having a 3? nucleotide that is a cognate nucleotide for the target allele, or (ii) the primer is a locus-specific primer and the next correct nucleotide hybridizes to the target allele; and (b) detecting stabilized ternary complexes at the features, thereby identifying the target alleles.

Abstract: Method and composition for identifying cognate nucleotides in a Sequencing By Binding™ procedure, wherein one or more labeled nucleotides are detected in ternary complexes but never incorporated. Labeled nucleotides can be incorporable nucleotides that contact preformed blocked primed template nucleic acids. Alternatively, labeled nucleotides are labeled non-incorporable nucleotides. Labeled nucleotides, including labeled non-incorporable nucleotides, can be detected in ternary complexes in the same reaction mixture that incorporates a reversible terminator nucleotide to create a blocked primed template nucleic acid. Detection of ternary complexes can take place in the presence of a catalytic metal ion.

Abstract: Method of identifying a cognate nucleotide (i.e., the “next correct nucleotide”) for a primed template nucleic acid molecule. In some embodiments, an ordered or random array of primed target nucleic acids characterized by different cognate nucleotides can be evaluated using a single imaging step to identify different cognate nucleotides for a collection of different primed template nucleic acid molecules. An optional incorporation step can follow the identifying step. A polymerase different from the ones used in the binding and examination steps can be used to incorporate a nucleotide, such as a reversible terminator nucleotide, preliminary to identification of the next cognate nucleotide.

Abstract: A method for identifying target alleles, that includes steps of (a) forming a plurality of stabilized ternary complexes at a plurality of features on an array, wherein the stabilized ternary complexes each has a polymerase, a template nucleic acid having a target allele of a locus, a primer hybridized to the locus, and a next correct nucleotide having a cognate in the locus, wherein either (i) the primer is an allele-specific primer having a 3? nucleotide that is a cognate nucleotide for the target allele, or (ii) the primer is a locus-specific primer and the next correct nucleotide hybridizes to the target allele; and (b) detecting stabilized ternary complexes at the features, thereby identifying the target alleles.

Abstract: Provided are compositions, methods and systems for determining the sequence of a template nucleic acid using a polymerase-based, sequencing-by-binding procedure. An examination step involves monitoring the interaction between a polymerase and template nucleic acid in the presence of one or more nucleotides. Identity of the next correct nucleotide in the sequence is determined without incorporation of any nucleotide into the structure of the primer by formation of a phosphodiester bond. An optional incorporation step can be used after the examination step to extend the primer by one or more nucleotides, thereby incrementing the template nucleotides that can be examined in a subsequent examination step. The sequencing-by-binding procedure does not require the use of labeled nucleotides or polymerases, but optionally can employ these reagents.

Abstract: Provided are compositions, methods and systems for determining the sequence of a template nucleic acid using a polymerase-based, sequencing-by-binding procedure. An examination step involves monitoring the interaction between a polymerase and template nucleic acid in the presence of one or more nucleotides. Identity of the next correct nucleotide in the sequence is determined without incorporation of any nucleotide into the structure of the primer by formation of a phosphodiester bond. An optional incorporation step can be used after the examination step to extend the primer by one or more nucleotides, thereby incrementing the template nucleotides that can be examined in a subsequent examination step. The sequencing-by-binding procedure does not require the use of labeled nucleotides or polymerases, but optionally can employ these reagents.