An in vitro assay for Cdc20-dependent mitotic anaphase-promoting complex activity from budding yeast.

@article{Schuyler2009AnIV,
  title={An in vitro assay for Cdc20-dependent mitotic anaphase-promoting complex activity from budding yeast.},
  author={Scott C. Schuyler and Andrew W. Murray},
  journal={Methods in molecular biology},
  year={2009},
  volume={545},
  pages={
          271-85
        }
}
Cell cycle transitions are controlled, in part, by ubiquitin-dependent proteolysis. In mitosis, the metaphase to anaphase transition is governed by an E3 ubiquitin ligase called the cyclosome or Anaphase-Promoting Complex (APC), and a WD40-repeat protein co-factor called Cdc20. In vitro Cdc20-dependent APC (APC(Cdc20)) assays have been useful in the identification and validation of target substrates, and in the study of APC enzymology and regulation. Many aspects of the regulation of cell cycle… 

Figures from this paper

Peptide inhibitors of the anaphase promoting-complex that cause sensitivity to microtubule poison
TLDR
It is hypothesized that Cdc20 Mad2-binding motif peptides, Tyc1 and human hp31 peptide can serve as novel molecular tools for investigating APC/C inhibition that leads to sensitivity to microtubule poison in vivo.
Mps1Mph1 Kinase Phosphorylates Mad3 to Inhibit Cdc20Slp1-APC/C and Maintain Spindle Checkpoint Arrests
TLDR
This genetic dissection of APC/C inhibition demonstrates that Mps1Mph1 kinase-dependent modifications of Mad3 and Mad2 act in a concerted manner to maintain spindle checkpoint arrests.
Cdc48 Chaperone and Adaptor Ubx4 Distribute the Proteasome in the Nucleus for Anaphase Proteolysis*
TLDR
It is proposed that Cdc48-Ubx4 acts on the proteasome and uses the chaperone activity to promote its nuclear distribution, thereby optimizing the prote asome level for efficient degradation of mitotic regulators.
Mps 1 Mph 1 Kinase Phosphorylates Mad 3 to Inhibit Cdc 20 Slp 1-APC / C and Maintain Spindle Checkpoint Arrests
TLDR
It is demonstrated that Mps1 kinase-dependent modifications of Mad3 and Mad2 act in a concerted manner to maintain spindle checkpoint arrests, and biochemically that Mad3 phospho-mimics are potent APC/C inhibitors in vitro, demonstrating thatMad3p modification can directly influence Cdc20-APC/ C activity.

References

SHOWING 1-10 OF 16 REFERENCES
Purification and assay of the budding yeast anaphase-promoting complex.
Phosphorylation by Cdc28 Activates the Cdc20-Dependent Activity of the Anaphase-Promoting Complex
TLDR
Results show that Cdc28 activates the APC in budding yeast to trigger anaphase, and it is shown that, like cdc28 mutants, cdc5 mutants affect APC phosphorylation in vivo.
Identification of Subunits of the Anaphase-Promoting Complex of Saccharomyces cerevisiae
TLDR
Two additional subunits of the budding yeast APC were identified: the largest subunit, encoded by the APC1 gene, is conserved between fungi and vertebrates and shows similarity to BIMEp from Aspergillus nidulans.
Mass spectrometric analysis of the anaphase-promoting complex from yeast: identification of a subunit related to cullins.
TLDR
The newly identified proteins Apc2p, Apc5p, and the RING-finger protein Apc11p are conserved from yeast to humans and are similar to the cullin Cdc53p, which is a subunit of the ubiquitin-protein ligase complex SCFCdc4 required for the initiation of DNA replication.
Enzymology of the anaphase-promoting complex.
The Doc1 subunit is a processivity factor for the anaphase-promoting complex
TLDR
It is shown that highly purified APC from Saccharomyces cerevisiae ubiquitinates a model cyclin substrate in a processive manner and analysis of mutant APC lacking the Doc1/Apc10 subunit indicates that Doc1 is required for processivity.
Doc1 mediates the activity of the anaphase‐promoting complex by contributing to substrate recognition
TLDR
It is shown that both the D and KEN boxes contribute to substrate recognition and that coactivator is required for substrate binding, implying that Doc1p/Apc10 may play a role to regulate the binding of specific substrates, similar to that of the coactivators.
Mitotic regulation of the human anaphase‐promoting complex by phosphorylation
TLDR
Immunofluorescence microscopy using phospho‐antibodies indicates that APC phosphorylation is initiated in prophase during nuclear uptake of cyclin B1, implying thatAPC activation is initiated by Cdk1 already in the nuclei of late prophase cells.
...
1
2
...