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

APC2 Cullin protein and APC11 RING protein comprise the minimal ubiquitin ligase module of the anaphase-promoting complex.

Tang Z, Li B, Bharadwaj R, Zhu H, Ozkan E, Hakala K, Deisenhofer J, Yu H

In mitosis, the anaphase-promoting complex (APC) regulates the onset of sister-chromatid separation and exit from mitosis by mediating the ubiquitination and degradation of the securin protein and mitotic cyclins. With the use of a baculoviral expression system, we have reconstituted the ubiquitin ligase activity of human APC. In combination with Ubc4 or UbcH10, a heterodimeric complex of APC2 and APC11 ... [more]

Mol. Biol. Cell Dec. 01, 2001; 12(12);3839-51 [Pubmed: 11739784]

Throughput

  • Low Throughput

Additional Notes

  • The in vitro reaction contained only E1, UBC4 [E2] and the substrate cyclin B1 (no E3 enzyme). Zinc (Zn2+) ions alone enhanced the activity of Ubc4 to ubiquitinate cyclin B1, and other divalent ions (Cd2+, Co2+, or Ni2+) had the same effect.

Curated By

  • BioGRID