BAIT

TTI2

YJR136C
Subunit of the ASTRA complex, involved in chromatin remodeling; telomere length regulator involved in the stability or biogenesis of PIKKs such as TORC1; similar to S. pombe Tti2p; may interact with Rsm23p; GFP-fusion protein localizes to the cytoplasm
GO Process (0)
GO Function (0)
GO Component (2)

Gene Ontology Cellular Component

Saccharomyces cerevisiae (S288c)
PREY

HSC82

HSP90, Hsp90 family chaperone HSC82, L000000813, YMR186W
Cytoplasmic chaperone of the Hsp90 family; plays a role in determining prion variants; redundant in function and nearly identical with Hsp82p, and together they are essential; expressed constitutively at 10-fold higher basal levels than HSP82 and induced 2-3 fold by heat shock; contains two acid-rich unstructured regions that promote the solubility of chaperone-substrate complexes; HSC82 has a paralog, HSP82, that arose from the whole genome duplication
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

Saccharomyces cerevisiae Tti2 Regulates PIKK Proteins and Stress Response.

Hoffman KS, Duennwald ML, Karagiannis J, Genereaux J, McCarton AS, Brandl CJ

The TTT complex is composed of the three essential proteins Tel2, Tti1, and Tti2 The complex is required to maintain steady state levels of phosphatidylinositol 3-kinase-related kinase (PIKK) proteins, including mTOR, ATM/Tel1, ATR/Mec1, and TRRAP/Tra1, all of which serve as regulators of critical cell signaling pathways. Due to their association with heat shock proteins, and with newly synthesized PIKK peptides, ... [more]

G3 (Bethesda) Jun. 01, 2016; 6(6);1649-59 [Pubmed: 27172216]

Throughput

  • Low Throughput

Ontology Terms

  • phenotype: inviable (APO:0000112)

Additional Notes

  • Overexpressing Hsp90 chaperones and cochaperones is lethal when Tti2 is depleted

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
TTI2 HSC82
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-0.4455BioGRID
840354

Curated By

  • BioGRID