Accurate segregation of the genetic material during cell division requires that sister chromatids are kept together by cohesion proteins until anaphase, when the chromatids become separated and distributed to the two daughter cells. Studies in yeast revealed that chromatid cohesion is essential for viability and is triggered by the conserved protein Eco1 (Ctf7). Cohesion must be established already in S phase in order to tie up sister chromatids instantly after replication, but how this crucial timing is achieved remains enigmatic. Here, we report that in yeast and humans Eco1 is directly physically coupled to the replication protein PCNA, a ring-shaped cofactor of DNA polymerases. Binding to PCNA is crucial, as yeast Eco1 mutants deficient in Eco1-PCNA interaction are defective in cohesion and inviable. Our study thus indicates that PCNA, a central matchmaker for replication-linked functions, is also crucially involved in the establishment of cohesion in S phase.
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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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| Evidence ID | Analyze ID | File | Description |
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