BAIT
MMS21
NSE2, PSO10, SUMO ligase MMS21, L000001125, YEL019C
SUMO ligase and component of the SMC5-SMC6 complex; this complex plays a key role in the removal of X-shaped DNA structures that arise between sister chromatids during DNA replication and repair; required for efficient sister chromatid cohesion; mutants are sensitive to methyl methanesulfonate and show increased spontaneous mutation and mitotic recombination; SUMOylates and inhibits Snf1p function
GO Process (1)
GO Function (2)
GO Component (4)
Gene Ontology Biological Process
Gene Ontology Molecular Function
Gene Ontology Cellular Component
Saccharomyces cerevisiae (S288c)
PREY
SET1
YTX1, histone methyltransferase SET1, KMT2, L000003286, YHR119W
Histone methyltransferase, subunit of the COMPASS (Set1C) complex; COMPASS methylates histone H3K4; Set1p-dependent H3K4 trimethylation recruits Nrd1p, allowing efficient termination of snoRNAs and cryptic unstable transcripts (CUTs) by Nrd1p-Nab3p-Sen1p pathway; modulates histone acetylation levels in promoter proximal regions to ensure efficient Nrd1p-dependent termination; required in transcriptional silencing near telomeres and at silent mating type loci; has a SET domain
GO Process (9)
GO Function (4)
GO Component (1)
Gene Ontology Biological Process
- ascospore formation [IMP]
- chromatin silencing at rDNA [TAS]
- chromatin silencing at silent mating-type cassette [IMP]
- chromatin silencing at telomere [IMP]
- histone H3-K4 methylation [IDA, IMP]
- peptidyl-lysine dimethylation [IMP, IPI]
- positive regulation of histone acetylation [IGI]
- regulation of transcription from RNA polymerase II promoter in response to stress [IGI, IMP]
- telomere maintenance [IMP]
Gene Ontology Molecular Function
Gene Ontology Cellular Component
Saccharomyces cerevisiae (S288c)
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.
Publication
The functional role of SUMO E3 ligase Mms21p in the maintenance of subtelomeric silencing in budding yeast.
In Saccharomyces cerevisiae, subtelomeric silencing is involved in the propagation of Silent Information Regulator (SIR) proteins toward euchromatin. Numerous mechanisms are involved in antagonizing the local spread of Sir-dependent silent chromatin into neighboring euchromatin. Here, we identified a novel role for sumoylation E3 ligase Mms21 in the maintenance of subtelomeric silencing. We found that disruption of E3 ligase activity of ... [more]
Biochem. Biophys. Res. Commun. Jul. 31, 2013; 0(0); [Pubmed: 23911609]
Throughput
- Low Throughput
Ontology Terms
- phenotype: inviable (APO:0000112)
- phenotype: temperature sensitive growth (APO:0000092)
Curated By
- BioGRID