Holliday junctions are four-way DNA structures that may arise during meiotic recombination, double-strand break repair, or postreplicative repair by the reciprocal exchange of single strands between two DNA molecules. Given their ability to effectively bridge two sister chromatids or homologous chromosomes, cells have implemented various pathways to ensure their timely removal. One of them is the nucleolytic processing of the Holliday junctions by specialized structure-selective endonucleases termed resolvases, which sever the connection between the linked molecules. These Holliday junction resolvases are essential tools of the DNA damage repair machinery to ensure accurate chromosomal segregation, whose activities can be modulated by posttranslational modifications like phosphorylation. Here, we describe a protocol to purify S. cerevisiae Yen1 resolvase in two different phosphorylation states (high and low) and to set up a biochemical assay to compare their ability to process a synthetic, oligonucleotide-based Holliday junction structures.
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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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