BAIT
PAP2
TRF4, non-canonical poly(A) polymerase PAP2, L000002953, YOL115W
Non-canonical poly(A) polymerase; involved in nuclear RNA degradation as a component of TRAMP; catalyzes polyadenylation of hypomodified tRNAs, and snoRNA and rRNA precursors; required for mRNA surveillance and maintenance of genome integrity, serving as a link between RNA and DNA metabolism; overlapping but non-redundant functions with Trf5p; relocalizes to cytosol in response to hypoxia
GO Process (18)
GO Function (4)
GO Component (4)
Gene Ontology Biological Process
- U4 snRNA 3'-end processing [IGI, IMP]
- base-excision repair [IGI, IMP]
- histone mRNA catabolic process [IGI]
- meiotic DNA double-strand break formation [IMP]
- ncRNA polyadenylation [IDA, IGI, IMP]
- negative regulation of DNA recombination [IMP]
- nuclear mRNA surveillance of mRNA 3'-end processing [IGI]
- nuclear polyadenylation-dependent CUT catabolic process [IGI, IMP]
- nuclear polyadenylation-dependent antisense transcript catabolic process [IMP]
- nuclear polyadenylation-dependent mRNA catabolic process [IGI]
- nuclear polyadenylation-dependent rRNA catabolic process [IGI, IMP]
- nuclear polyadenylation-dependent snRNA catabolic process [IMP]
- nuclear polyadenylation-dependent snoRNA catabolic process [IGI, IMP]
- nuclear polyadenylation-dependent tRNA catabolic process [IDA, IGI, IMP]
- polyadenylation-dependent mRNA catabolic process [IMP]
- polyadenylation-dependent snoRNA 3'-end processing [IGI]
- snoRNA polyadenylation [IGI]
- tRNA modification [IMP]
Gene Ontology Molecular Function
Saccharomyces cerevisiae (S288c)
PREY
GCN5
AAS104, ADA4, SWI9, histone acetyltransferase GCN5, KAT2, L000000684, YGR252W
Catalytic subunit of ADA and SAGA histone acetyltransferase complexes; modifies N-terminal lysines on histones H2B and H3; acetylates Rsc4p, a subunit of the RSC chromatin-remodeling complex, altering replication stress tolerance; relocalizes to the cytosol in response to hypoxia; mutant displays reduced transcription elongation in the G-less-based run-on (GLRO) assay; greater involvement in repression of RNAPII-dependent transcription than in activation
GO Process (4)
GO Function (4)
GO Component (6)
Gene Ontology Biological Process
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
Contribution of Trf4/5 and the nuclear exosome to genome stability through regulation of histone mRNA levels in Saccharomyces cerevisiae.
Balanced levels of histones are crucial for chromosome stability, and one major component of this control regulates histone mRNA amounts. The Saccharomyces cerevisiae poly(A) polymerases Trf4 and Trf5 are involved in a quality control mechanism that mediates polyadenylation and consequent degradation of various RNA species by the nuclear exosome. None of the known RNA targets, however, explains the fact that ... [more]
Genetics Mar. 01, 2007; 175(3);993-1010 [Pubmed: 17179095]
Throughput
- Low Throughput
Ontology Terms
- phenotype: inviable (APO:0000112)
Curated By
- BioGRID