BAIT
AIR1
S000028413, YIL079C
Zinc knuckle protein; involved in nuclear RNA processing and degradation as a component of the TRAMP complex; stimulates the poly(A) polymerase activity of Pap2p in vitro; AIR1 has a paralog, AIR2, that arose from the whole genome duplication; although Air1p and Air2p are homologous TRAMP subunits, they have nonredundant roles in regulation of substrate specificity of the exosome
GO Process (7)
GO Function (1)
GO Component (2)
Gene Ontology Biological Process
- ncRNA polyadenylation [IDA]
- nuclear mRNA surveillance of mRNA 3'-end processing [IGI]
- nuclear polyadenylation-dependent CUT catabolic process [IGI]
- nuclear polyadenylation-dependent rRNA catabolic process [IGI]
- nuclear polyadenylation-dependent snRNA catabolic process [IGI]
- nuclear polyadenylation-dependent snoRNA catabolic process [IGI]
- nuclear polyadenylation-dependent tRNA catabolic process [IDA]
Gene Ontology Molecular Function
Gene Ontology Cellular Component
Saccharomyces cerevisiae (S288c)
PREY
SEM1
DSS1, HOD1, proteasome regulatory particle lid subunit SEM1, L000003539, L000004647, YDR363W-A
Component of lid subcomplex of 26S proteasome regulatory subunit; involved in mRNA export mediated by TREX-2 complex (Sac3p-Thp1p); assumes different conformations in different contexts, functions as molecular glue stabilizing the Rpn3p/Rpn7p regulatory heterodimer, and tethers it to lid helical bundle; ortholog of human DSS1; protein abundance increases in response to DNA replication stress
GO Process (10)
GO Function (0)
GO Component (4)
Gene Ontology Biological Process
- SAGA complex localization to transcription regulatory region [IMP]
- exocytosis [IGI, IPI]
- filamentous growth [IMP]
- histone deubiquitination [IMP]
- mRNA export from nucleus [IGI, IMP, IPI]
- maintenance of DNA trinucleotide repeats [IMP]
- proteasome assembly [IMP]
- proteasome-mediated ubiquitin-dependent protein catabolic process [IDA, IMP]
- regulation of cell cycle [IMP]
- ubiquitin-dependent protein catabolic process [IMP]
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
A yeast exosome cofactor, Mpp6, functions in RNA surveillance and in the degradation of noncoding RNA transcripts.
A genome-wide screen for synthetic lethal (SL) interactions with loss of the nuclear exosome cofactors Rrp47/Lrp1 or Air1 identified 3'-->5' exonucleases, the THO complex required for mRNP assembly, and Ynr024w (Mpp6). SL interactions with mpp6Delta were confirmed for rrp47Delta and nuclear exosome component Rrp6. The results of bioinformatic analyses revealed homology between Mpp6 and a human exosome cofactor, underlining the ... [more]
Mol. Cell. Biol. Sep. 01, 2008; 28(17);5446-57 [Pubmed: 18591258]
Throughput
- Low Throughput
Ontology Terms
- phenotype: inviable (APO:0000112)
Curated By
- BioGRID