BAIT

NCL1

TRM4, YBL024W
S-adenosyl-L-methionine-dependent tRNA: m5C-methyltransferase; methylates cytosine to m5C at several positions in tRNAs and intron-containing pre-tRNAs; increases proportion of tRNALeu(CAA) with m5C at wobble position in response to hydrogen peroxide, causing selective translation of mRNA from genes enriched in TTG codon; loss of NCL1 confers hypersensitivity to oxidative stress; similar to Nop2p and human proliferation associated nucleolar protein p120
GO Process (3)
GO Function (2)
GO Component (1)

Gene Ontology Biological Process

Gene Ontology Molecular Function

Gene Ontology Cellular Component

Saccharomyces cerevisiae (S288c)
PREY

XRN1

DST2, KEM1, RAR5, SEP1, SKI1, chromatin-binding exonuclease XRN1, L000000891, L000001902, YGL173C
Evolutionarily-conserved 5'-3' exonuclease; component of cytoplasmic processing (P) bodies involved in mRNA decay; also enters the nucleus and positively regulates transcription initiation and elongation; plays a role in microtubule-mediated processes, filamentous growth, ribosomal RNA maturation, and telomere maintenance; activated by the scavenger decapping enzyme Dcs1p
Saccharomyces cerevisiae (S288c)

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.

Publication

Degradation of several hypomodified mature tRNA species in Saccharomyces cerevisiae is mediated by Met22 and the 5'-3' exonucleases Rat1 and Xrn1.

Chernyakov I, Whipple JM, Kotelawala L, Grayhack EJ, Phizicky EM

Mature tRNA is normally extensively modified and extremely stable. Recent evidence suggests that hypomodified mature tRNA in yeast can undergo a quality control check by a rapid tRNA decay (RTD) pathway, since mature tRNA(Val(AAC)) lacking 7-methylguanosine and 5-methylcytidine is rapidly degraded and deacylated at 37 degrees C in a trm8-Delta trm4-Delta strain, resulting in temperature-sensitive growth. We show here that ... [more]

Genes Dev. May. 15, 2008; 22(10);1369-80 [Pubmed: 18443146]

Throughput

  • Low Throughput

Ontology Terms

  • phenotype: protein/peptide accumulation (APO:0000149)
  • phenotype: protein/peptide modification (APO:0000131)

Additional Notes

  • tRNA Val(AAC) is aminoacylated to nearly WT levels and is not degraded in a trm8 trm4 rat1 xrn1 quadruple mutant.
  • tRNAVal(AAC) is aminoacylated to nearly WT levels and is not degraded in a trm8 trm4 rat1 xrn1 quadruple mutant.

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
NCL1 XRN1
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-0.1561BioGRID
2077706

Curated By

  • BioGRID