Abstract: Provided herein are compositions and methods for sequencing using at least altering electrical characteristics of polymer bridges. In some examples, the bridges may span the space between first and second electrodes and may include first and second polymer chains that are hybridized to one another. A plurality of nucleotides may be coupled to corresponding labels. A polymerase may be coupled to the bridge and may add nucleotides to a first polynucleotide using at least a sequence of a second polynucleotide. The labels corresponding to those nucleotides respectively may alter hybridization between the first and second polymer chains. Detection circuitry may detect a sequence in which the polymerase adds the nucleotides to the first polynucleotide using at least changes in an electrical signal through the bridge, the changes being responsive to the respective alterations of hybridization using the labels corresponding to those nucleotides.

Abstract: Provided herein are compositions and methods for electronically sequencing polynucleotides using partially double-stranded polymer bridges. The bridges may span the space between first and second electrodes. A plurality of nucleotides may be coupled to corresponding labels. A polymerase may add nucleotides to a first polynucleotide using at least a sequence of a second polynucleotide. The labels corresponding to those nucleotides respectively may hybridize to a portion of the bridge that is not double-stranded. Detection circuitry may detect a sequence in which the polymerase adds the nucleotides to the first polynucleotide using at least changes in an electrical signal through the bridge, the changes being responsive to the respective hybridizations between the non-double stranded portion of the bridge and the labels corresponding to those nucleotides.

Abstract: In some examples, a device includes first and second electrodes separated from one another by a space; a particle coupled to the first electrode via a first plurality of bonds, and coupled to the second electrode via a second plurality of bonds; and a polymerase coupled to the particle. In some examples, a composition includes first and second electrodes separated from one another by a space; a fluid including a first electrically conductive label having a length at least as long as a length of the space; and detection circuitry to generate a first signal responsive to transient formation, using the first electrically conductive label, of a first electrically conductive bridge between the first and second electrodes.

Abstract: Sequencing polynucleotides using nanopores is provided herein. A polynucleotide is disposed through a nanopore's aperture such that its 3? end is on the nanopore's first side and its 5? end is on the nanopore's second side. On the nanopore's first side, a duplex with the polynucleotide is formed that includes a 3? end. The duplex is extended on the first side of the nanopore by adding a nucleotide to the 3? end of the duplex. A first force is applied disposing the 3? end of the duplex within the aperture, and the nanopore inhibits translocation of the 3? end of the duplex to the second side of the nanopore. A value of an electrical property of the 3? end of the duplex and a single-stranded portion of the polynucleotide is measured. The nucleotide at the 3? end of the duplex is identified using the measured value.

Abstract: Provided is a method including detecting an incorporation of a labelled nucleotide into a nascent polynucleotide strand complementary to a template polynucleotide strand by a polymerase, wherein the polymerase is tethered to a solid support conductive channel by a tether and the labelled nucleotides is a compound of Formula I:

Abstract: A labeled nucleotide includes a nucleotide, a linking molecule attached to a phosphate group of the nucleotide, and a redox-active charge tag attached to the linking molecule. The redox-active charge tag is to be oxidized or reduced by an electrically conductive channel when maintained in proximity of a sensing zone of the electrically conductive channel.

Abstract: A method is provided that includes adding, using a polymerase coupled to a substrate, nucleotides in a solution to a first polynucleotide using at least a sequence of a second polynucleotide. The method includes separating, using labels respectively coupled to the nucleotides, quenchers from respective fluorophores. The method includes then detecting a sequence in which the polymerase adds the nucleotides to the first polynucleotide using at least fluorescence from the respective fluorophores.

Abstract: Provided is a method including hybridizing a polynucleotide to a template, contacting a first template nucleotide 5-prime adjacent to a 5-prime-most nucleotide of the plurality of nucleotides that are complementary to the polynucleotide with a polymerase and a charge-tagged nucleotide, wherein the charge-tagged nucleotide is complementary to the first template nucleotide and includes a charge tag attached to a 5-prime polyphosphate of the charge-tagged nucleotide.

Abstract: The present disclosure relates to methods comprising (a) contacting a polymerase with a template polynucleotide and a plurality of free nucleotides, wherein the template polynucleotide is hybridized to a complementary polynucleotide comprising a 3? end overhung by a 5? terminal fragment of the template polynucleotide, and the plurality of free nucleotides comprise a compound Formula (I); wherein said contacting occurs under a complexation condition, the complexation condition effective to form a complex but not effective to form polymerization, wherein the complex comprises the polymerase, the template polynucleotide, the complementary polynucleotide, and one of the plurality of free nucleotides that is complementary to a first nucleotide of the 5? terminal fragment of the template polynucleotide; (b) detecting a signal from the fluorescent label; and (c) exposing the complex to a polymerization condition.

Abstract: The invention is in general directed to the rapid exponential amplification of short DNA or RNA sequences at a constant temperature.

Abstract: Provided is a method including detecting an incorporation of a labelled nucleotide into a nascent polynucleotide strand complementary to a template polynucleotide strand by a polymerase, wherein the polymerase is tethered to a solid support conductive channel by a tether and the labelled nucleotides is a compound of Formula I:

Abstract: The invention is in general directed to the rapid exponential amplification of short DNA or RNA sequences at a constant temperature.

Abstract: Provided is a method including detecting an incorporation of a labelled nucleotide into a nascent polynucleotide strand complementary to a template polynucleotide strand by a polymerase, wherein the polymerase is tethered to a solid support conductive channel by a tether and the labelled nucleotides is a compound of Formula I:

Abstract: A labeled nucleotide includes a nucleotide, a linking molecule attached to a phosphate group of the nucleotide, and a redox-active charge tag attached to the linking molecule. The redox-active charge tag is to be oxidized or reduced by an electrically conductive channel when maintained in proximity of a sensing zone of the electrically conductive channel.

Abstract: Provided is a method including detecting an incorporation of a labelled nucleotide into a nascent polynucleotide strand complementary to a template polynucleotide strand by a polymerase, wherein the polymerase is tethered to a solid support conductive channel by a tether and the labelled nucleotides is a compound of Formula I:

Abstract: The invention is in general directed to the rapid exponential amplification of short DNA or RNA sequences at a constant temperature.

Abstract: The invention is in general directed to the rapid exponential amplification of short DNA or RNA sequences at a constant temperature.

Abstract: The invention is in general directed to the rapid exponential amplification of short DNA or RNA sequences at a constant temperature.

Abstract: The invention is in general directed to the rapid exponential amplification of short DNA or RNA sequences at a constant temperature.

Abstract: The invention is in general directed to the rapid exponential amplification of short DNA or RNA sequences at a constant temperature.