BAIT
ISW1
SGN2, chromatin-remodeling ATPase ISW1, L000004447, YBR245C
ATPase subunit of imitation-switch (ISWI) class chromatin remodelers; with Ioc3p forms Isw1a complex involved in repression of transcription initiation; with Ioc2p and Ioc4p forms Isw1b complex involved in regulation of transcription elongation; Isw1b recruited to ORFs by H3K36 methylation and acts with Chd1p to prevent trans-histone exchange over coding regions; Isw1p import into nucleus depends on C-terminal bipartite nuclear targeting signal KRIR X19 KKAK
GO Process (11)
GO Function (4)
GO Component (4)
Gene Ontology Biological Process
- DNA-templated transcription, elongation [IDA, IMP]
- chromatin organization involved in regulation of transcription [IMP]
- chromatin remodeling [IGI, IMP, IPI]
- heterochromatin maintenance involved in chromatin silencing [IGI, IMP]
- negative regulation of histone exchange [IMP]
- nucleosome positioning [IGI, IMP]
- positive regulation of transcription from RNA polymerase II promoter [IMP]
- regulation of chromatin organization [IMP]
- regulation of transcriptional start site selection at RNA polymerase II promoter [IGI]
- termination of RNA polymerase I transcription [IGI]
- termination of RNA polymerase II transcription [IGI]
Gene Ontology Molecular Function
Gene Ontology Cellular Component
Saccharomyces cerevisiae (S288c)
PREY
RTF1
CSL3, L000001782, YGL244W
Subunit of RNAPII-associated chromatin remodeling Paf1 complex; regulates gene expression by directing cotranscriptional histone modification, influences transcription and chromatin structure through several independent functional domains; directly or indirectly regulates DNA-binding properties of Spt15p and relative activities of different TATA elements; involved in transcription elongation as demonstrated by the G-less-based run-on (GLRO) assay
GO Process (19)
GO Function (3)
GO Component (3)
Gene Ontology Biological Process
- DNA-templated transcription, termination [IMP]
- global genome nucleotide-excision repair [IMP]
- mRNA 3'-end processing [IMP]
- negative regulation of transcription from RNA polymerase II promoter [IMP]
- positive regulation of phosphorylation of RNA polymerase II C-terminal domain serine 2 residues [IMP]
- positive regulation of transcription elongation from RNA polymerase I promoter [IDA]
- positive regulation of transcription elongation from RNA polymerase II promoter [IMP]
- recruitment of 3'-end processing factors to RNA polymerase II holoenzyme complex [IMP]
- regulation of chromatin silencing at telomere [IMP]
- regulation of histone H2B conserved C-terminal lysine ubiquitination [IDA, IMP]
- regulation of histone H2B ubiquitination [IMP]
- regulation of histone H3-K4 methylation [IMP]
- regulation of histone H3-K79 methylation [IMP]
- regulation of phosphorylation of RNA polymerase II C-terminal domain serine 2 residues [IMP]
- regulation of transcription from RNA polymerase II promoter [IGI]
- regulation of transcription-coupled nucleotide-excision repair [IGI]
- snoRNA 3'-end processing [IMP]
- snoRNA transcription from an RNA polymerase II promoter [IMP]
- transcription elongation from RNA polymerase II promoter [IGI, IMP]
Gene Ontology Molecular Function
Gene Ontology Cellular Component
Saccharomyces cerevisiae (S288c)
Phenotypic Enhancement
A genetic interaction is inferred when mutation or overexpression of one gene results in enhancement of any phenotype (other than lethality/growth defect) associated with mutation or over expression of another gene.
Publication
A direct interaction between the Chd1 CHCT domain and Rtf1 controls Chd1 distribution and nucleosome positioning on active genes.
The nucleosome remodeler Chd1 is required for the re-establishment of nucleosome positioning in the wake of transcription elongation by RNA Polymerase II. Previously, we found that Chd1 occupancy on gene bodies depends on the Rtf1 subunit of the Paf1 complex in yeast. Here, we identify an N-terminal region of Rtf1 and the CHCT domain of Chd1 as sufficient for their ... [more]
Nucleic Acids Res Aug. 27, 2025; 53(16); [Pubmed: 40867051]
Throughput
- Low Throughput
Ontology Terms
- chromosome/plasmid maintenance (APO:0000143)
- protein/peptide distribution (APO:0000209)
Additional Notes
- isw1/rtf1 double mutants have altered mononucleosome positioning
Related interactions
| Interaction | Experimental Evidence Code | Dataset | Throughput | Score | Curated By | Notes |
|---|---|---|---|---|---|---|
| ISW1 RTF1 | Negative Genetic Negative Genetic Mutations/deletions in separate genes, each of which alone causes a minimal phenotype, but when combined in the same cell results in a more severe fitness defect or lethality under a given condition. This term is reserved for high or low throughput studies with scores. | High | -0.1255 | BioGRID | 2083893 |
Curated By
- BioGRID