BAIT

STUB1

CHIP, HSPABP2, NY-CO-7, SCAR16, SDCCAG7, UBOX1, LA16c-313D11.6
STIP1 homology and U-box containing protein 1, E3 ubiquitin protein ligase
GO Process (15)
GO Function (15)
GO Component (10)
Homo sapiens
PREY

CDKN1A

CAP20, CDKN1, CIP1, MDA-6, P21, SDI1, WAF1, p21CIP1
cyclin-dependent kinase inhibitor 1A (p21, Cip1)
GO Process (27)
GO Function (4)
GO Component (6)
Homo sapiens

Biochemical Activity (Ubiquitination)

An interaction is inferred from the biochemical effect of one protein upon another, for example, GTP-GDP exchange activity or phosphorylation of a substrate by a kinase. The bait protein executes the activity on the substrate hit protein. A Modification value is recorded for interactions of this type with the possible values Phosphorylation, Ubiquitination, Sumoylation, Dephosphorylation, Methylation, Prenylation, Acetylation, Deubiquitination, Proteolytic Processing, Glucosylation, Nedd(Rub1)ylation, Deacetylation, No Modification, Demethylation.

Publication

The E3 Ligase CHIP Mediates p21 Degradation to Maintain Radioresistance.

Biswas K, Sarkar S, Du K, Brautigan DL, Abbas T, Larner JM

Lung cancer resists radiotherapy, making it one of the deadliest forms of cancer. Here, we show that human lung cancer cell lines can be rendered sensitive to ionizing radiation (IR) by RNAi knockdown of C-terminus of Hsc70-interacting protein (CHIP/STUB1), a U-box-type E3 ubiquitin ligase that targets a number of stress-induced proteins. Mechanistically, ubiquitin-dependent degradation of the cyclin-dependent kinase (CDK) inhibitor, ... [more]

Mol. Cancer Res. Jun. 01, 2017; 15(6);651-659 [Pubmed: 28232384]

Throughput

  • Low Throughput

Additional Notes

  • ubiquitination reaction uses Uba1(Ube1) as E1, UbcH5C(Ube2D3) as E2, CHIP as E3 and Hsp70(presumably HSPA4) and Hsp40(DNAJB1) as accessory proteins

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
STUB1 CDKN1A
Affinity Capture-Western
Affinity Capture-Western

An interaction is inferred when a bait protein is affinity captured from cell extracts by either polyclonal antibody or epitope tag and the associated interaction partner identified by Western blot with a specific polyclonal antibody or second epitope tag. This category is also used if an interacting protein is visualized directly by dye stain or radioactivity. Note that this differs from any co-purification experiment involving affinity capture in that the co-purification experiment involves at least one extra purification step to get rid of potential contaminating proteins.

Low-BioGRID
-
CDKN1A STUB1
Affinity Capture-Western
Affinity Capture-Western

An interaction is inferred when a bait protein is affinity captured from cell extracts by either polyclonal antibody or epitope tag and the associated interaction partner identified by Western blot with a specific polyclonal antibody or second epitope tag. This category is also used if an interacting protein is visualized directly by dye stain or radioactivity. Note that this differs from any co-purification experiment involving affinity capture in that the co-purification experiment involves at least one extra purification step to get rid of potential contaminating proteins.

Low-BioGRID
-

Curated By

  • BioGRID