Cohesin is a protein that plays a key role in the cohesion and separation of sister chromatids. During the duplication of chromatids, cohesin holds sister chromatids together until the onset of anaphase, and thereby prevents the premature separation of sister chromatids which would otherwise jeopardize the faithful segregation of chromosomes. To investigate the molecular mechanisms of sister chromatid cohesion, we have isolated multicopy suppressors of a temperature-sensitive (ts) mutation in the SCC1/MCD1/RHC21 gene which encodes a component of the cohesin complex in budding yeast. Isolation of multicopy suppressors of rhc21-sk16 and further genetic analyses revealed that several distinct biological pathways are involved in the regulation of SCC1/MCD1/RHC21 function. Firstly, PDE2 and BCY1, each of which inhibits the activity of protein kinase A (PKA), suppressed the temperature sensitivity of the rhc21-sk16 mutant. Secondly, PDE2 suppressed the temperature sensitivity of the cdc16-1 mutant. These results suggest that SCC1/MCD1/RHC21 is negatively regulated by the PKA pathway via the anaphase promoting complex (APC). Thirdly, ZDS1, a multicopy suppressor of cdc28-1N, and its homologue ZDS2 were isolated as multicopy suppressors of rhc21-sk16. Furthermore, the rhc21-sk16 mutant did not grow in the presence of the cdc28-1N mutation. Hence, SCC1/MCD1/RHC21 is positively regulated by the mitotic CDK, CDC28. Finally, SCC1/MCD1/RHC21 was found to interact genetically with CDC20, an activator of APC. Overexpression of CDC20 suppressed the temperature sensitivity of rhc21-sk16, and rhc21-sk16 was shown to be synthetically lethal with cdc20-1. In addition, the growth of the rhc21-sk16 mutant was inhibited by overproduction of the anaphase inhibitor Pds1p, whose degradation is mediated by Cdc20p in APC-dependent proteolysis. The functional relationships between SCC1/MCD1/RHC21 and PKA, CDK or APC are discussed.
Increase the total number of rows showing on this page using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table.
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 |
---|
Increase the total number of rows showing on this page using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table; click on the small "i" buttons located within a cell for an annotation to view further details.
Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
---|
Increase the total number of rows showing on this page using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table.
Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
---|
Increase the total number of rows displayed on this page using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; to filter the table by a specific experiment type, type a keyword into the Filter box (for example, “microarray”); download this table as a .txt file using the Download button or click Analyze to further view and analyze the list of target genes using GO Term Finder, GO Slim Mapper, SPELL, or YeastMine.
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 |
---|
Increase the total number of rows showing on this page by using the pull-down located below the table, or use the page scroll at the table's top right to browse through its pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table.
Site | Modification | Modifier | Source | Reference |
---|
Increase the total number of rows showing on this page by using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table; click on the small "i" buttons located within a cell for an annotation to view further details about experiment type and any other genes involved in the interaction.
Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
---|
Increase the total number of rows showing on this page by using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table; click on the small "i" buttons located within a cell for an annotation to view further details about experiment type and any other genes involved in the interaction.
Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
---|
Increase the total number of rows showing on this page by using the pull-down located below the table, or use the page scroll at the table's top right to browse through its pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table.
Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
---|
Increase the total number of rows displayed on this page using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table; download this table as a .txt file using the Download button;
Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
---|