The conserved lysine in the Walker A motif of the ATP-binding domain encoded by the yeast RFC1, RFC2, RFC3, and RFC4 genes was mutated to glutamic acid. Complexes of replication factor C with a N-terminal truncation (Delta2-273) of the Rfc1 subunit (RFC) containing a single mutant subunit were overproduced in Escherichia coli for biochemical analysis. All of the mutant RFC complexes were capable of interacting with PCNA. Complexes containing a rfc1-K359E mutation were similar to wild type in replication activity and ATPase activity; however, the mutant complex showed increased susceptibility to proteolysis. In contrast, complexes containing either a rfc2-K71E mutation or a rfc3-K59E mutation were severely impaired in ATPase and clamp loading activity. In addition to their defects in ATP hydrolysis, these complexes were defective for DNA binding. A mutant complex containing the rfc4-K55E mutation performed as well as a wild type complex in clamp loading, but only at very high ATP concentrations. Mutant RFC complexes containing rfc2-K71R or rfc3-K59R, carrying a conservative lysine --> arginine mutation, had much milder clamp loading defects that could be partially (rfc2-K71R) or completely (rfc3-K59R) suppressed at high ATP concentrations.
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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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