Abstract: The present disclosure provides engineered cross-type-nucleic-acid targeting nucleic acids and compositions thereof. Nucleic acid sequences encoding the engineered cross-type-nucleic-acid targeting nucleic acids, as well as expression cassettes, vectors and cells comprising such nucleic acid sequences, are described. Also, methods are disclosed for making and using the engineered cross-type-nucleic-acid targeting nucleic acids and compositions thereof.

Abstract: The present disclosure provides DNA-guided CRISPR systems; polynucleotides comprising DNA, RNA and mixtures thereof for use with CRISPR systems; and methods of use involving such polynucleotides and DNA-guided CRISPR systems.

Abstract: This disclosure provides for compositions and methods for the use of nucleic acid-targeting nucleic acids and complexes thereof.

Abstract: The present disclosure provides engineered cross-type-nucleic-acid targeting nucleic acids and compositions thereof. Nucleic acid sequences encoding the engineered cross-type-nucleic-acid targeting nucleic acids, as well as expression cassettes, vectors and cells comprising such nucleic acid sequences, are described. Also, methods are disclosed for making and using the engineered cross-type-nucleic-acid targeting nucleic acids and compositions thereof.

Abstract: The present disclosure provides DNA-guided CRISPR systems; polynucleotides comprising DNA, RNA and mixtures thereof for use with CRISPR systems; and methods of use involving such polynucleotides and DNA-guided CRISPR systems.

Abstract: The present disclosure provides engineered cross-type-nucleic-acid targeting nucleic acids and compositions thereof. Nucleic acid sequences encoding the engineered cross-type-nucleic-acid targeting nucleic acids, as well as expression cassettes, vectors and cells comprising such nucleic acid sequences, are described. Also, methods are disclosed for making and using the engineered cross-type-nucleic-acid targeting nucleic acids and compositions thereof.

Abstract: The present disclosure provides engineered polynucleotide sequences that form scaffolds and nucleoprotein complexes comprising such engineered polynucleotide sequences that form scaffolds and nucleic acid binding proteins. Nucleic acid sequences encoding the engineered polynucleotide sequences that form scaffolds, as well as expression cassettes, vectors and cells comprising such polynucleotide sequences, are described. A variety of methods for making and using the engineered polynucleotide sequences that form scaffolds are also disclosed.

Abstract: The present disclosure provides DNA-guided CRISPR systems; polynucleotides comprising DNA, RNA and mixtures thereof for use with CRISPR systems; and methods of use involving such polynucleotides and DNA-guided CRISPR systems.

Abstract: The present disclosure provides DNA-guided CRISPR systems; polynucleotides comprising DNA, RNA and mixtures thereof for use with CRISPR systems; and methods of use involving such polynucleotides and DNA-guided CRISPR systems.

Abstract: The disclosure provides for compositions, methods and kits, for reducing off-target effects of genome engineering.

Abstract: The present disclosure provides engineered cross-type-nucleic-acid targeting nucleic acids and compositions thereof. Nucleic acid sequences encoding the engineered cross-type-nucleic-acid targeting nucleic acids, as well as expression cassettes, vectors and cells comprising such nucleic acid sequences, are described. Also, methods are disclosed for making and using the engineered cross-type-nucleic-acid targeting nucleic acids and compositions thereof.

Abstract: The present disclosure provides compositions and methods for enhancing directed nucleic acid repair, which are useful in the area of genome engineering.

Abstract: The present disclosure provides DNA-guided CRISPR systems; polynucleotides comprising DNA, RNA and mixtures thereof for use with CRISPR systems; and methods of use involving such polynucleotides and DNA-guided CRISPR systems.

Abstract: The present specification discloses engineered Type II CRISPR-Cas9 systems comprising split-nexus Cas9-associated polynucleotides (sn-casPNs), including systems comprising three split-nexus Cas9-associated polynucleotides (sn1-casPN/sn2-casPN/sn3-casPN) and systems comprising two split-nexus Cas9-associated polynucleotides (sn1-casPN/sn2-casPN). Together with a Cas9 protein, the sn-casPNs facilitate site-specific modifications, including cleavage and mutagenesis, of a target polynucleotide in vitro and in vivo. Furthermore, the engineered Type II CRISPR-Cas9 systems comprising sn-casPNs are useful in methods of regulating expression of a target nucleic acid. Methods are described herein for the creation of a variety of engineered Type II CRISPR-Cas9 systems comprising two or more sn-casPNs. Polynucleotide sequences, expression cassettes, vectors, compositions, and kits for carrying out a variety of methods are also described.

Abstract: This disclosure provides for compositions and methods for the use of nucleic acid-targeting nucleic acids and complexes thereof.

Abstract: The present specification discloses engineered Type II CRISPR-Cas9 systems comprising split-nexus Cas9-associated polynucleotides (sn-casPNs), including systems comprising three split-nexus Cas9-associated polynucleotides (sn1-casPN/sn2-casPN/sn3-casPN) and systems comprising two split-nexus Cas9-associated polynucleotides (sn1-casPN/5n2-casPN). Together with a Cas9 protein, the sn-casPNs facilitate site-specific modifications, including cleavage and mutagenesis, of a target polynucleotide in vitro and in vivo. Furthermore, the engineered Type II CRISPR-Cas9 systems comprising sn-casPNs are useful in methods of regulating expression of a target nucleic acid. Methods are described herein for the creation of a variety of engineered Type II CRISPR-Cas9 systems comprising two or more sn-casPNs. Polynucleotide sequences, expression cassettes, vectors, compositions, and kits for carrying out a variety of methods are also described.

Abstract: The present specification discloses engineered Type II CRISPR-Cas9 systems comprising split-nexus Cas9-associated polynucleotides (sn-casPNs), including systems comprising three split-nexus Cas9-associated polynucleotides (sn1-casPN/sn2-casPN/sn3-casPN) and systems comprising two split-nexus Cas9-associated polynucleotides (sn1-casPN/sn2-casPN). Together with a Cas9 protein, the sn-casPNs facilitate site-specific modifications, including cleavage and mutagenesis, of a target polynucleotide in vitro and in vivo. Furthermore, the engineered Type II CRISPR-Cas9 systems comprising sn-casPNs are useful in methods of regulating expression of a target nucleic acid. Methods are described herein for the creation of a variety of engineered Type II CRISPR-Cas9 systems comprising two or more sn-casPNs. Polynucleotide sequences, expression cassettes, vectors, compositions, and kits for carrying out a variety of methods are also described.

Abstract: The present disclosure provides DNA-guided CRISPR systems; polynucleotides comprising DNA, RNA and mixtures thereof for use with CRISPR systems; and methods of use involving such polynucleotides and DNA-guided CRISPR systems.

Abstract: Class 2 CRISPR-Cas nucleoprotein complexes are disclosed comprising a Class 2 CRISPR-Cas protein, a CRISPR-Cas associated polynucleotide lacking a spacer element (casPN), and a distinct spacer element sequence polynucleotide (sesPN) comprising a target nucleic acid binding sequence. These complexes are capable of site-directed binding to a target nucleic acid complementary to the target nucleic acid binding sequence of the sesPN. The Class 2 CRISPR-Cas nucleoprotein complexes facilitate site-specific modifications, including cleavage and mutagenesis, of a target nucleic acid sequence. Polynucleotide sequences, expression cassettes, vectors, compositions, and kits for carrying out a variety of methods are also described.

Abstract: This disclosure provides for compositions and methods for the use of nucleic acid-targeting nucleic acids and complexes thereof. Genome engineering can refer to altering the genome by deleting, inserting, mutating, or substituting specific nucleic acid sequences. The altering can be gene or location specific. Genome engineering can use nucleases to cut a nucleic acid thereby generating a site for the alteration. Engineering of non-genomic nucleic acid is also contemplated.