The present invention provides for novel methods for regulating and detecting the cytosine methylation status of DNA. The invention is based upon identification of a novel and surprising catalytic activity for the family of TET proteins, namely TET1, TET2, TET3, and CXXC4. The novel activity is related to the enzymes being capable of converting the cytosine nucleotide 5-methylcytosine into 5-hydroxymethylcytosine by hydroxylation.

The present invention provides for novel methods for regulating and detecting the cytosine methylation status of DNA. The invention is based upon identification of a novel and surprising catalytic activity for the family of TET proteins, namely TET1, TET2, TET3, and CXXC4. The novel activity is related to the enzymes being capable of converting the cytosine nucleotide 5-methylcytosine into 5-hydroxymethylcytosine by hydroxylation.

The present invention provides for novel methods for regulating and detecting the cytosine methylation status of DNA. The invention is based upon identification of a novel and surprising catalytic activity for the family of TET proteins, namely TET1, TET2, TET3, and CXXC4. The novel activity is related to the enzymes being capable of converting the cytosine nucleotide 5-methylcytosine into 5-hydroxymethylcytosine by hydroxylation.

The invention relates to the use of recombinant/semi-synthetic nucleosomes carrying histone and/or DNA modifications as a reference standard for quantification of covalently modified (on the histone proteins or wrapping DNA), variant, or mutant nucleosomes (collectively modified nucleosomes or nucleosome modifications) from a biological sample. The invention further relates to methods of using the assay to accurately quantify single or combinatorial nucleosome modifications as biomarkers of disease.

The invention relates to the use of recombinant/semi-synthetic nucleosomes carrying histone and/or DNA modifications as a reference standard for quantification of covalently modified (on the histone proteins or wrapping DNA), variant, or mutant nucleosomes (collectively modified nucleosomes or nucleosome modifications) from a biological sample. The invention further relates to methods of using the assay to accurately quantify single or combinatorial nucleosome modifications as biomarkers of disease.

The present invention provides for novel methods for regulating and detecting the cytosine methylation status of DNA. The invention is based upon identification of a novel and surprising catalytic activity for the family of TET proteins, namely TET1, TET2, TET3, and CXXC4. The novel activity is related to the enzymes being capable of converting the cytosine nucleotide 5-methylcytosine into 5-hydroxymethylcytosine by hydroxylation.

The present invention provides for novel methods for regulating and detecting the cytosine methylation status of DNA. The invention is based upon identification of a novel and surprising catalytic activity for the family of TET proteins, namely TET1, TET2, TET3, and CXXC4. The novel activity is related to the enzymes being capable of converting the cytosine nucleotide 5-methylcytosine into 5-hydroxymethylcytosine by hydroxylation.

The present invention provides for novel methods for regulating and detecting the cytosine methylation status of DNA. The invention is based upon identification of a novel and surprising catalytic activity for the family of TET proteins, namely TET1, TET2, TET3, and CXXC4. The novel activity is related to the enzymes being capable of converting the cytosine nucleotide 5-methylcytosine into 5-hydroxymethylcytosine by hydroxylation.

The present invention provides for novel methods for regulating and detecting the cytosine methylation status of DNA. The invention is based upon identification of a novel and surprising catalytic activity for the family of TET proteins, namely TET1, TET2, TET3, and CXXC4. The novel activity is related to the enzymes being capable of converting the cytosine nucleotide 5-methylcytosine into 5-hydroxymethylcytosine by hydroxylation.

A method for detecting the binding of a chromatin-associated factor of interest to a sequence of chromatin DNA in a cell, including: contacting a permeabilized cell or nucleus with a specific binding agent that specifically recognizes the chromatin-associated factor of interest, wherein the specific binding agent is linked to a nuclease that is inactive or an activatable transposome; activating the nuclease or transposase, thereby excising the sequence of chromatin DNA bound to the chromatin-associated factor of interest; isolating the excised DNA; and determining the sequence of the excised DNA, thereby detecting binding of a chromatin-associated factor of interest to a sequence of chromatin DNA in the cell.