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

Identification of N-glycan-binding proteins for E3 ubiquitin ligases.

Tai T

N-glycans serve as a degradation signal by the SCF(Fbx2) ubiquitin ligase complex in the cytosol. Fbx2, an F-box protein, binds specifically to proteins attached with N-linked high-mannose type oligosaccharides, and subsequently contributes to ubiquitination of glycoproteins. Pre-integrin beta1 is identified as one of the Fbx2 targets. These two proteins bind in the cytosol after inhibition of the proteasome. These results ... [more]

Meth. Enzymol. Nov. 23, 2006; 415(0);20-30 [Pubmed: 17116465]

Throughput

  • Low Throughput

Additional Notes

  • The in vitro reaction contained E1, Ubc4 [E2], SCF-Fbx2 (Flag-Skp1/Cul1-HA/His-Fbx2/T7-Roc1) [E3], and ubiquitin. The F-box substrate recognition subunit is FBX2 (FBXO2).

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
FBXO2 AHSG
Biochemical Activity
Biochemical Activity

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.

Low-BioGRID
479536
FBXO2 AHSG
Reconstituted Complex
Reconstituted Complex

An interaction is inferred between proteins in vitro. This can include proteins in recombinant form or proteins isolated directly from cells with recombinant or purified bait. For example, GST pull-down assays where a GST-tagged protein is first isolated and then used to fish interactors from cell lysates are considered reconstituted complexes (e.g. PUBMED: 14657240, Fig. 4A or PUBMED: 14761940, Fig. 5). This can also include gel-shifts, surface plasmon resonance, isothermal titration calorimetry (ITC) and bio-layer interferometry (BLI) experiments. The bait-hit directionality may not be clear for 2 interacting proteins. In these cases the directionality is up to the discretion of the curator.

Low-BioGRID
-

Curated By

  • BioGRID