BAIT

PRP38

L000001510, YGR075C
Unique component of the U4/U6.U5 tri-snRNP particle; tri-snRNP is required for conformational changes which result in the catalytic activation of the spliceosome; dispensable for spliceosome assembly
GO Process (1)
GO Function (0)
GO Component (1)

Gene Ontology Biological Process

Gene Ontology Cellular Component

Saccharomyces cerevisiae (S288c)
PREY

SQS1

PFA1, YNL224C
Protein that stimulates the ATPase and helicase activities of Prp43p; acts with Prp43p to stimulate 18s rRNA maturation by Nob1p; overexpression antagonizes the suppression of splicing defects by spp382 mutants; component of pre-ribosomal particles; relocalizes from nucleus to nucleolus upon DNA replication stress
Saccharomyces cerevisiae (S288c)

Dosage Lethality

A genetic interaction is inferred when over expression or increased dosage of one gene causes lethality in a strain that is mutated or deleted for another gene.

Publication

Spp382p interacts with multiple yeast splicing factors, including possible regulators of Prp43 DExD/H-Box protein function.

Pandit S, Paul S, Zhang L, Chen M, Durbin N, Harrison SM, Rymond BC

Prp43p catalyzes essential steps in pre-mRNA splicing and rRNA biogenesis. In splicing, Spp382p stimulates the Prp43p helicase to dissociate the postcatalytic spliceosome and, in some way, to maintain the integrity of the spliceosome assembly. Here we present a dosage interference assay to identify Spp382p-interacting factors by screening for genes that when overexpressed specifically inhibit the growth of a conditional lethal ... [more]

Genetics Sep. 01, 2009; 183(1);195-206 [Pubmed: 19581443]

Throughput

  • Low Throughput

Ontology Terms

  • phenotype: viability (APO:0000111)
  • phenotype: inviable (APO:0000112)

Additional Notes

  • Overexpression of SQS1 is lethal in a PRP38/SPP382 double mutant
  • genetic complex

Curated By

  • BioGRID