This unit describes the ChIP-exo methodology, which combines chromatin immunoprecipitation (ChIP) with lambda exonuclease digestion followed by high-throughput sequencing. ChIP-exo allows identification of a nearly complete set of the binding locations of DNA-binding proteins at near-single-nucleotide resolution with almost no background. The process is initiated by cross-linking DNA and associated proteins. Chromatin is then isolated from nuclei and subjected to sonication. Subsequently, an antibody against the desired protein is used to immunoprecipitate specific DNA-protein complexes. ChIP DNA is purified, sequencing adaptors are ligated, and the adaptor-ligated DNA is then digested by lambda exonuclease, generating 25- to 50-nucleotide fragments for high-throughput sequencing. The sequences of the fragments are mapped back to the reference genome to determine the binding locations. The 5' ends of DNA fragments on the forward and reverse strands indicate the left and right boundaries of the DNA-protein binding regions, respectively.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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