The Cdc45 protein is crucial for the initiation of chromosome replication in eukaryotic cells, as it allows the activation of prereplication complexes (pre-RCs) that contain the MCM helicase. This causes the unwinding of origins and the establishment of DNA replication forks. The incorporation of Cdc45 at nascent forks is a highly regulated and poorly understood process that requires, in budding yeast, the Sld3 protein and the GINS complex. Previous studies suggested that Sld3 is also important for the progression of DNA replication forks after the initiation step, as are Cdc45 and GINS. In contrast, we show here that Sld3 does not move with DNA replication forks and only associates with MCM in an unstable manner before initiation. After the establishment of DNA replication forks from early origins, Sld3 is no longer essential for the completion of chromosome replication. Unlike Sld3, GINS is not required for the initial recruitment of Cdc45 to origins and instead is necessary for stable engagement of Cdc45 with the nascent replisome. Like Cdc45, GINS then associates stably with MCM during 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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