BAIT

HSM3

L000004729, YBR272C
Proteasome-interacting protein; involved in the assembly of the base subcomplex of the 19S proteasomal regulatory particle (RP); involved in DNA mismatch repair during slow growth; weak similarity to Msh1p; related to human 19S subunit S5b; structural study suggests Hsm3p is a scaffold protein for Rpt1p-Rpt2p complex formation
UPS Project
GO Process (2)
GO Function (0)
GO Component (4)

Gene Ontology Biological Process

Gene Ontology Cellular Component

Saccharomyces cerevisiae (S288c)
PREY

UBP6

L000004586, YFR010W
Ubiquitin-specific protease; situated in the base subcomplex of the 26S proteasome, releases free ubiquitin from branched polyubiquitin chains; negatively regulates degradation of ubiquitinated proteins by the proteasome; works in opposition to Hul5p polyubiquitin elongation activity; mutant has aneuploidy tolerance
UPS Project
GO Process (2)
GO Function (1)
GO Component (2)

Gene Ontology Biological Process

Gene Ontology Molecular Function

Gene Ontology Cellular Component

Saccharomyces cerevisiae (S288c)

Phenotypic Enhancement

A genetic interaction is inferred when mutation or overexpression of one gene results in enhancement of any phenotype (other than lethality/growth defect) associated with mutation or over expression of another gene.

Publication

The catalytic activity of Ubp6 enhances maturation of the proteasomal regulatory particle.

Sakata E, Stengel F, Fukunaga K, Zhou M, Saeki Y, Foerster F, Baumeister W, Tanaka K, Robinson CV

The 26S proteasome is a 2.5 MDa macromolecular machine responsible for targeted protein degradation. Recently, four chaperones were identified that promote the assembly of the 19S regulatory particle (RP). Here, we probe the dynamic architecture of the proteasome by applying quantitative proteomics and mass spectrometry (MS) of intact complexes to provide a detailed characterization of how Ubp6 assists this assembly ... [more]

Mol. Cell Jun. 10, 2011; 42(5);637-49 [Pubmed: 21658604]

Throughput

  • Low Throughput

Ontology Terms

  • phenotype: protein/peptide distribution (APO:0000209)

Additional Notes

  • Defects in proteasomal assembly are enhanced in hsm3 ubp6 double mutants.

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
HSM3 UBP6
Synthetic Growth Defect
Synthetic Growth Defect

A genetic interaction is inferred when mutations in separate genes, each of which alone causes a minimal phenotype, result in a significant growth defect under a given condition when combined in the same cell.

Low-BioGRID
568602
HSM3 UBP6
Synthetic Lethality
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.

Low-BioGRID
568603

Curated By

  • BioGRID