BAIT
PDI1
MFP1, TRG1, protein disulfide isomerase PDI1, L000001360, YCL043C
Protein disulfide isomerase; multifunctional protein of ER lumen, essential for formation of disulfide bonds in secretory and cell-surface proteins, unscrambles non-native disulfide bonds; key regulator of Ero1p; forms complex with Mnl1p that has exomannosidase activity, processing unfolded protein-bound Man8GlcNAc2 oligosaccharides to Man7GlcNAc2, promoting degradation in unfolded protein response; PDI1 has a paralog, EUG1, that arose from the whole genome duplication
GO Process (1)
GO Function (4)
GO Component (1)
Gene Ontology Biological Process
Gene Ontology Molecular Function
Gene Ontology Cellular Component
Saccharomyces cerevisiae (S288c)
PREY
GET3
ARR4, guanine nucleotide exchange factor GET3, YDL100C
Guanine nucleotide exchange factor for Gpa1p; amplifies G protein signaling; functions as a chaperone under ATP-depleted oxidative stress conditions; subunit of the GET complex, which is involved in ATP dependent Golgi to ER trafficking and insertion of tail-anchored (TA) proteins into the ER membrane under non-stress conditions; has low-level ATPase activity; protein abundance increases in response to DNA replication stress
GO Process (7)
GO Function (3)
GO Component (2)
Gene Ontology Biological Process
- ATP-independent chaperone mediated protein folding [IDA]
- pheromone-dependent signal transduction involved in conjugation with cellular fusion [IMP]
- posttranslational protein targeting to membrane [IDA]
- protein insertion into ER membrane [IMP]
- response to heat [IMP]
- response to metal ion [IMP]
- retrograde vesicle-mediated transport, Golgi to ER [IDA, IGI, 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 unfolded protein response is necessary but not sufficient to compensate for defects in disulfide isomerization.
Pdi1p (protein-disulfide isomerase) is a folding assistant of the endoplasmic reticulum (ER) that catalyzes disulfide formation and the isomerization of incorrect disulfides. Its disulfide forming activity is its essential function in Saccharomyces cerevisiae. A truncation mutant (Pdi1a') that is competent in disulfide formation but deficient in catalyzing isomerization has only a small effect on growth, although the maturation of isomerase-requiring ... [more]
J. Biol. Chem. Apr. 17, 2009; 284(16);10400-8 [Pubmed: 19233841]
Throughput
- High Throughput|Low Throughput
Ontology Terms
- phenotype: heat sensitivity (APO:0000147)
- phenotype: inviable (APO:0000112)
Additional Notes
- Low throughput verification of the synthetic lethal phenotype of a subset of genes identified by dSLAM. The experiment involved the temperature-sensitive PDI1 gene (tsPDIa') and was carried out at the semipermissive temperature of 30 degrees Celsius.
- diploid synthetic lethality array method (dSLAM)
Curated By
- BioGRID