A method of preparing a library of tagged nucleic acid fragments including contacting a population of cells directly with a lysis reagent having one or more protease to generate a cell lysate; inactivating the protease to generate an inactivated cell lysate, and applying a transposase and a transposon end composition containing a transferred strand to the inactivated cell lysate under conditions wherein the target nucleic acid and the transposon end composition undergo a transposition reaction.

The invention provides barcode libraries and methods of making and using them including obtaining a plurality of nucleic acid constructs in which each construct comprises a unique N-mer and a functional N-mer and segregating the constructs into a fluid compartments such that each compartment contains one or more copies of a unique construct. The invention further provides methods for digital PCR and for use of barcode libraries in digital PCR.

A method of preparing a library of tagged nucleic acid fragments including contacting a population of cells directly with a lysis reagent having one or more protease to generate a cell lysate; inactivating the protease to generate an inactivated cell lysate, and applying a transposase and a transposon end composition containing a transferred strand to the inactivated cell lysate under conditions wherein the target nucleic acid and the transposon end composition undergo a transposition reaction.

A method of preparing a library of tagged nucleic acid fragments including contacting a population of cells directly with a lysis reagent having one or more protease to generate a cell lysate; inactivating the protease to generate an inactivated cell lysate, and applying a transposase and a transposon end composition containing a transferred strand to the inactivated cell lysate under conditions wherein the target nucleic acid and the transposon end composition undergo a transposition reaction.

The invention relates to methods and compositions for improving on nucleic acid polymerization, including DNA replication by in vitro primer extension to generate, for example, polymers for nanopore-based single molecule sequencing of a DNA template. A nucleic acid polymerase reaction composition is provided with polymerization enhancement moieties, which allows enhanced DNA polymerase activity with nucleotide analogs, resulting in improved length of primer extension products for sequencing applications.

The invention includes a mutant Taq polymerase, which can significantly extend and amplify a target sequence where the extension conditions are time limited to as little as one second. The mutant Taq polymerase, or a biologically active fragment thereof, has one or more substitutions differing from the wild type as shown in Table I.

Embodiments disclosed herein provide a general, scalable, high-throughput, and high-resolution approach for experimental dissection of regulatory regions and driver nucleotides in the context of human biology and disease. Applicants present HiDRA, a novel high-resolution global screen for transcriptional regulatory activity in accessible chromatin regions, enabling high-efficiency, high-throughput, and high-resolution inference of regulatory activity.

Embodiments disclosed herein provide a general, scalable, high-throughput, and high-resolution approach for experimental dissection of regulatory regions and driver nucleotides in the context of human biology and disease. Applicants present HiDRA, a novel high-resolution global screen for transcriptional regulatory activity in accessible chromatin regions, enabling high-efficiency, high-throughput, and high-resolution inference of regulatory activity.

The invention provides barcode libraries and methods of making and using them including obtaining a plurality of nucleic acid constructs in which each construct comprises a unique N-mer and a functional N-mer and segregating the constructs into a fluid compartments such that each compartment contains one or more copies of a unique construct. The invention further provides methods for digital PCR and for use of barcode libraries in digital PCR.

The invention includes a mutant Taq polymerase, which can significantly extend and amplify a target sequence where the extension conditions are time limited to as little as one second. The mutant Taq polymerase, or a biologically active fragment thereof, has one or more substitutions differing from the wild type as shown in Table I.