The present invention relates to a mutant of Argonaute protein lacking a DNA cleavage activity but having a DNA binding activity, wherein the mutation of the mutant is located in a PIWI domain. The present invention also relates to a use based on the protein mutant, especially in enrichment of a target DNA and construction of sequence libraries. Therefore, the present invention also relates to a method for enrichment of a target DNA, comprising the following steps: (a) designing a guide sequence for a specific sequence in the target DNA; (b) binding the mutant according to the present invention, the guide sequence and the target DNA to obtain a mutant-guide sequence-target DNA ternary complex; (c) capturing the mutant-guide sequence-target DNA ternary complex through a capture medium; and (d) separating the target DNA from the captured mutant-guide sequence-target DNA ternary complex to obtain an enriched target DNA.

Aspects of the technology disclosed herein relate to methods of preparing and analyzing nucleic acids, e.g., nucleic acids encoding immune receptors and immunoglobulins. In some embodiments, methods for preparing nucleic acids for sequence analysis (e.g., using next-generation sequencing) are provided herein

Aspects of the technology disclosed herein relate to methods of preparing and analyzing nucleic acids, e.g., nucleic acids encoding immune receptors and immunoglobulins. In some embodiments, methods for preparing nucleic acids for sequence analysis (e.g., using next-generation sequencing) are provided herein

Methods and compositions for performing highly sensitive in vitro assays to define substrate preferences and off-target sites of nucleic-acid binding, modifying, and cleaving agents.

Methods and compositions for performing highly sensitive in vitro assays to define substrate preferences and off-target sites of nucleic-acid binding, modifying, and cleaving agents.

Methods and devices for enriching and analyzing target molecules from a sample are provided herein. In some embodiments, methods and devices involve enrichment of target molecules (e.g., using SCODA) and subsequent detection and analysis using sequencing.

Methods and devices for enriching and analyzing target molecules from a sample are provided herein. In some embodiments, methods and devices involve enrichment of target molecules (e.g., using SCODA) and subsequent detection and analysis using sequencing.

A method to detect chromatin-interacting RNAs in any given state of a cell or tissue by examining global RNA interactions with DNA by deep sequencing. A method to generate a global view of chromatin-RNA interactome by mapping the binding locations on the genome of each detected chromatin interacting RNA.

A method to detect chromatin-interacting RNAs in any given state of a cell or tissue by examining global RNA interactions with DNA by deep sequencing. A method to generate a global view of chromatin-RNA interactome by mapping the binding locations on the genome of each detected chromatin interacting RNA.

Methods and compositions for performing highly sensitive in vitro assays to define substrate preferences and off-target sites of nucleic-acid binding, modifying, and cleaving agents.