Abstract:
Compositions that include polymerases with features for improving entry of nucleotide analogues into active site regions and for coordinating with the nucleotide analogues in the active site region are provided. Methods of making the polymerases and of using the polymerases in sequencing and DNA replication and amplification as well as kinetic models of polymerase activity and computer-implemented methods of using the models are also provided.
Abstract:
Compositions, devices, systems and methods for reducing and/or preventing photo-induced damage of one or more reactants in an illuminated analytical reaction by addition of one or more photoprotective compounds to the reaction mixture and allowing the reaction to proceed for a period that is less than a photo-induced damage threshold period.
Abstract:
Compositions, devices, systems and methods for reducing and/or preventing photo-induced damage of one or more reactants in an illuminated analytical reaction by addition of one or more photo-induced damage mitigating agents to the reaction mixture and allowing the reaction to proceed for a period that is less than a photo-induced damage threshold period.
Abstract:
Methods of producing substrates having selected active chemical regions by employing elements of the substrates in assisting the localization of active chemical groups in desired regions of the substrate. The methods may include optical, chemical and/or mechanical processes for the deposition, removal, activation and/or deactivation of chemical groups in selected regions of the substrate to provide selective active regions of the substrate.
Abstract:
Methods, compositions, and systems are provided for characterization of modified nucleic acids. In certain preferred embodiments, single molecule sequencing methods are provided for identification of modified nucleotides within nucleic acid sequences. Modifications detectable by the methods provided herein include chemically modified bases, enzymatically modified bases, abasic sites, non-natural bases, secondary structures, and agents bound to a template nucleic acid.
Abstract:
Methods, compositions, and systems are provided for characterization of modified nucleic acids. In certain preferred embodiments, single molecule sequencing methods are provided for identification of modified nucleotides within nucleic acid sequences. Modifications detectable by the methods provided herein include chemically modified bases, enzymatically modified bases, abasic sites, non-natural bases, secondary structures, and agents bound to a template nucleic acid.
Abstract:
Controlled initiation of primer extension in determination of nucleic acid sequence information by incorporation of nucleotides or nucleotide analogs. Preferred aspects include photo-initiated extension through the use of photo-cleavable blocking groups on termini of primer sequences followed by non-terminating primer extension using nucleotides or nucleotide analogs that are not extension terminators.
Abstract:
Methods of producing substrates having selected active chemical regions by employing elements of the substrates in assisting the localization of active chemical groups in desired regions of the substrate. The methods may include optical, chemical and/or mechanical processes for the deposition, removal, activation and/or deactivation of chemical groups in selected regions of the substrate to provide selective active regions of the substrate.
Abstract:
Methods, compositions, and systems are provided for characterization of modified nucleic acids. In certain preferred embodiments, single molecule sequencing methods are provided for identification of modified nucleotides within nucleic acid sequences. Modifications detectable by the methods provided herein include chemically modified bases, enzymatically modified bases, abasic sites, non-natural bases, secondary structures, and agents bound to a template nucleic acid.
Abstract:
Methods, compositions, and systems are provided for characterization of modified nucleic acids. In certain preferred embodiments, single molecule sequencing methods are provided for identification of modified nucleotides within nucleic acid sequences. Modifications detectable by the methods provided herein include chemically modified bases, enzymatically modified bases, abasic sites, non-natural bases, secondary structures, and agents bound to a template nucleic acid.