Abstract:
Provided herein, among other things, are a variety of methods that comprise inserting a plurality of barcoded transposons into a population of DNA fragments that comprise DNA fragments of less than 1 kb in length, to produce transposon-tagged fragments that each comprise a barcoded transposon. Kits for performing this method are also provided.
Abstract:
Provided herein is a method of sample analysis. In certain embodiments, the method comprises: a) cross-linking protein of a cell using a first compound to produce a first cross-linked product comprising cross-linked protein, and RNA; b) contacting the first cross-linked product and a second compound under conditions by which an oligonucleotide portion of the second compound hybridizes to the RNA; c) activating a reaction the first and second compound, thereby covalently crosslinking the oligonucleotide to the cross-linked protein to produce a second cross-linked product; d) isolating the second cross-linked product using an affinity tag; and e) analyzing the isolated second cross-linked product. Compounds for performing the method are also provided.
Abstract:
A method for fragmenting a genome is provided. In certain embodiments, the method comprises: (a) combining a genomic sample containing genomic DNA with a plurality of Cas9-gRNA complexes, wherein the Cas9-gRNA complexes comprise a Cas9 protein and a set of at least 10 Cas9-associated guide RNAs that are complementary to different, pre-defined, sites in a genome, to produce a reaction mixture; and (b) incubating the reaction mixture to produce at least 5 fragments of the genomic DNA. Also provided is a composition comprising at least 100 Cas9-associated guide RNAs that are each complementary to a different, pre-defined, site in a genome. Kits for performing the method are also provided. In addition, other methods, compositions and kits for manipulating nucleic acids are also provided.
Abstract:
Provided herein is method comprising: contacting an initial RNA sample containing a population of different RNA molecules with a divalent cation and a set of DNAzymes that are designed to cleave multiple target RNAs in the initial sample, thereby producing a product RNA sample that comprises: a) uncleaved RNA molecules and b) cleaved RNA fragments that contain a 2′,3′-cyclic-phosphate and a 5′ hydroxyl as the result of DNAzyme cleavage.