1gqp

Structural highlights

Function

APC10_YEAST Component of the anaphase promoting complex/cyclosome (APC/C), a cell cycle-regulated E3 ubiquitin-protein ligase complex that controls progression through mitosis and the G1 phase of the cell cycle. The APC/C is thought to confer substrate specificity and, in the presence of ubiquitin-conjugating E2 enzymes, it catalyzes the formation of protein-ubiquitin conjugates that are subsequently degraded by the 26S proteasome. In early mitosis, the APC/C is activated by CDC20 and targets securin PDS1, the B-type cyclin CLB5, and other anaphase inhibitory proteins for proteolysis, thereby triggering the separation of sister chromatids at the metaphase-to-anaphase transition. In late mitosis and in G1, degradation of CLB5 allows activation of the APC/C by CDH1, which is needed to destroy CDC20 and the B-type cyclin CLB2 to allow exit from mitosis and creating the low CDK state necessary for cytokinesis and for reforming prereplicative complexes in G1 prior to another round of replication. DOC1 is required, together with the coactivators CDH1 and CDC20, for recognition and binding of the substrates.^{[1] [2]}

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

References

1. ↑ Carroll CW, Morgan DO. The Doc1 subunit is a processivity factor for the anaphase-promoting complex. Nat Cell Biol. 2002 Nov;4(11):880-7. PMID:12402045 doi:http://dx.doi.org/10.1038/ncb871
2. ↑ Passmore LA, McCormack EA, Au SW, Paul A, Willison KR, Harper JW, Barford D. Doc1 mediates the activity of the anaphase-promoting complex by contributing to substrate recognition. EMBO J. 2003 Feb 17;22(4):786-96. PMID:12574115 doi:http://dx.doi.org/10.1093/emboj/cdg084