Reference: Parnell EJ and Stillman DJ (2019)
Reference Help
Abstract
Activation of the Saccharomyces cerevisiae HO promoter is highly regulated, requiring the ordered recruitment of activators and coactivators and allowing production of only a few transcripts in mother cells within a short cell cycle window. We conducted genetic screens to identify the negative regulators of HO expression necessary to limit HO transcription. Known repressors of HO (Ash1 and Rpd3) were identified, as well as several additional chromatin-associated factors including the Hda1 histone deacetylase, the Isw2 chromatin remodeler, and the corepressor Tup1 We also identified clusters of HO promoter mutations that suggested roles for the Dot6/Tod6 (PAC site) and Ume6 repression pathways. We used ChIP assays with synchronized cells to validate the involvement of these factors and map the association of Ash1, Dot6, and Ume6 with the HO promoter to a brief window in the cell cycle between binding of the initial activating transcription factor and initiation of transcription. We found that Ash1 and Ume6 each recruit the Rpd3 histone deacetylase to HO, and their effects are additive. In contrast, Rpd3 was not recruited significantly to the PAC site, suggesting this site has a distinct mechanism for repression. Increases in HO expression and SWI/SNF recruitment were all additive upon loss of Ash1, Ume6, and PAC site factors, indicating the convergence of independent pathways for repression. Our results demonstrate that multiple protein complexes are important for limiting the spread of SWI/SNF-mediated nucleosome eviction across the HO promoter, suggesting that regulation requires a delicate balance of activities that promote and repress transcription.
- Reference Type
-
Journal Article |
Research Support, N.I.H., Extramural
- Authors
-
Parnell EJ,
Stillman DJ
... Show all
Show fewer
- DOT6 | UME6 | ASH1 | HO | SWI5 | ACE2 | SWI/SNF chromatin remodelling complex
- HDA3 | RPD3 | TUP1 | ISW2 | tup1-H575Y
Gene Ontology Annotations
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 |
Phenotype Annotations
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 |
Disease Annotations
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 |
Regulation Annotations
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, or SPELL.
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 |
Post-translational Modifications
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 |
Interaction Annotations
Genetic Interactions
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 |
Physical Interactions
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.
| Interactor | Interactor | Assay | Annotation | Action | Modification |
No physical interaction data for Parnell EJ and Stillman DJ (2019) |
Functional Complementation Annotations
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 |