TOP1
Gene Ontology Biological Process
- DNA strand elongation involved in DNA replication [IMP]
- DNA topological change [IDA, IMP]
- chromatin assembly or disassembly [IMP]
- chromatin silencing at rDNA [IMP]
- mitotic chromosome condensation [IGI, IMP]
- nuclear migration [IGI, IMP]
- regulation of mitotic recombination [IMP]
- regulation of transcription from RNA polymerase II promoter [IMP]
- transcription elongation from RNA polymerase II promoter [IMP]
Gene Ontology Molecular Function
TOP2
Gene Ontology Biological Process
- DNA strand elongation involved in DNA replication [IMP]
- DNA topological change [IDA]
- DNA unwinding involved in DNA replication [IMP]
- chromatin assembly or disassembly [IMP]
- chromatin remodeling at centromere [IMP]
- mitotic DNA integrity checkpoint [IMP]
- reciprocal meiotic recombination [IMP]
- regulation of mitotic recombination [IMP]
- replication fork progression beyond termination site [IMP]
- resolution of meiotic recombination intermediates [IBA]
- sister chromatid segregation [IBA]
Gene Ontology Molecular Function
Gene Ontology Cellular Component
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
Loss of Topoisomerase I leads to R-loop-mediated transcriptional blocks during ribosomal RNA synthesis.
Pre-rRNA transcription by RNA Polymerase I (Pol I) is very robust on active rDNA repeats. Loss of yeast Topoisomerase I (Top1) generated truncated pre-rRNA fragments, which were stabilized in strains lacking TRAMP (Trf4/Trf5-Air1/Air2-Mtr4 polyadenylation complexes) or exosome degradation activities. Loss of both Top1 and Top2 blocked pre-rRNA synthesis, with pre-rRNAs truncated predominately in the 18S 5' region. Positive supercoils in ... [more]
Throughput
- Low Throughput
Ontology Terms
- phenotype: rna accumulation (APO:0000224)
Additional Notes
- double mutants show complete inhibition of rRNA synthesis
Related interactions
| Interaction | Experimental Evidence Code | Dataset | Throughput | Score | Curated By | Notes |
|---|---|---|---|---|---|---|
| TOP2 TOP1 | 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 | -0.7085 | BioGRID | 2008863 | |
| TOP1 TOP2 | Phenotypic Enhancement 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. | Low | - | BioGRID | 258239 | |
| TOP1 TOP2 | Phenotypic Enhancement 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. | Low | - | BioGRID | 1435413 | |
| TOP1 TOP2 | Phenotypic Enhancement 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. | Low | - | BioGRID | 669111 | |
| TOP1 TOP2 | Phenotypic Enhancement 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. | Low | - | BioGRID | 2596048 | |
| TOP1 TOP2 | Phenotypic Enhancement 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. | Low | - | BioGRID | 796926 | |
| TOP1 TOP2 | Phenotypic Enhancement 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. | Low | - | BioGRID | 553685 | |
| TOP1 TOP2 | Phenotypic Enhancement 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. | Low | - | BioGRID | 156871 | |
| TOP1 TOP2 | Phenotypic Enhancement 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. | Low | - | BioGRID | 425853 | |
| TOP2 TOP1 | Phenotypic Suppression Phenotypic Suppression A genetic interaction is inferred when mutation or over expression of one gene results in suppression of any phenotype (other than lethality/growth defect) associated with mutation or over expression of another gene. | Low | - | BioGRID | 519164 | |
| TOP1 TOP2 | Synthetic Growth Defect Synthetic Growth Defect A genetic interaction is inferred when mutations in separate genes, each of which alone causes a minimal phenotype, result in a significant growth defect under a given condition when combined in the same cell. | Low | - | BioGRID | 160713 | |
| TOP1 TOP2 | Synthetic Growth Defect Synthetic Growth Defect A genetic interaction is inferred when mutations in separate genes, each of which alone causes a minimal phenotype, result in a significant growth defect under a given condition when combined in the same cell. | Low | - | BioGRID | 161140 | |
| TOP1 TOP2 | Synthetic Lethality Synthetic Lethality A genetic interaction is inferred when mutations or deletions in separate genes, each of which alone causes a minimal phenotype, result in lethality when combined in the same cell under a given condition. | Low | - | BioGRID | 159023 | |
| TOP1 TOP2 | Synthetic Lethality Synthetic Lethality A genetic interaction is inferred when mutations or deletions in separate genes, each of which alone causes a minimal phenotype, result in lethality when combined in the same cell under a given condition. | Low | - | BioGRID | 518745 |
Curated By
- BioGRID