On Sunday, April 20th 2025, starting 8:30am GMT, there will be maintenance work that will involve the website being unavailable during parts of the day. We apologize for any inconvenience this may cause and appreciate your understanding.
We noted you are experiencing viewing problems
-
Check with your IT department that JWPlatform, JWPlayer and Amazon AWS & CloudFront are not being blocked by your network. The relevant domains are *.jwplatform.com, *.jwpsrv.com, *.jwpcdn.com, jwpltx.com, jwpsrv.a.ssl.fastly.net, *.amazonaws.com and *.cloudfront.net. The relevant ports are 80 and 443.
-
Check the following talk links to see which ones work correctly:
Auto Mode
HTTP Progressive Download Send us your results from the above test links at access@hstalks.com and we will contact you with further advice on troubleshooting your viewing problems. -
No luck yet? More tips for troubleshooting viewing issues
-
Contact HST Support access@hstalks.com
-
Please review our troubleshooting guide for tips and advice on resolving your viewing problems.
-
For additional help, please don't hesitate to contact HST support access@hstalks.com
We hope you have enjoyed this limited-length demo
This is a limited length demo talk; you may
login or
review methods of
obtaining more access.
- Co-ordination of G1 Progression
-
1. START control in yeast
- Prof. Curt Wittenberg
-
2. The pRB/E2F pathway
- Prof. Jacqueline Lees
-
3. Cell cycle control by the ubiquitin system in mammals
- Prof. Michele Pagano
- Chromosome Duplication
-
4. Replication licensing
- Prof. Julian Blow
-
5. Initiation of DNA replication
- Prof. Bruce Stillman
-
6. Regulation of replication fork progression and stability
- Dr. Luis Aragón
-
7. Nucleosome assembly during DNA replication
- Dr. Alain Verreault
- Preparing for Mitosis
-
8. Sister chromatid cohesion: simple concept, complex reality
- Prof. Douglas Koshland
-
9. Mitotic chromosome condensation
- Prof. Andrew Belmont
-
10. Centrosome duplication and separation in animal cells
- Prof. Andrew Fry
- Spindle Assembly and Chromosome Segregation
-
11. Bipolar spindle assembly
- Dr. Eric Karsenti
-
12. Chromosome bi-orientation in yeast
- Prof. Mike Stark
- Prof. Tomo Tanaka
- Mitotic Exit and Cytokinesis
-
14. Cleavage furrow formation and ingression during animal cytokinesis
- Dr. Pier Paolo D'Avino
- Checkpoints Governing Cell Cycle Progression
-
15. The DNA damage response
- Dr. Vincenzo Costanzo
-
16. The spindle checkpoint
- Dr. Kevin Hardwick
-
17. Spindle movement and checkpoint control during mitosis in yeast
- Prof. John Cooper
-
18. The G2/M transition
- Prof. Dr. René Medema
- The Cell Cycle in Development and Cancer
-
19. Mouse models to investigate cell cycle and cancer
- Dr. Philipp Kaldis
-
20. Cell cycle: a complex network of signals regulating cell proliferation
- Prof. Antonio Giordano
-
21. Drug discovery and target validation in the p53 pathway
- Prof. Sir David Lane
-
22. Role and regulation of Cdk inhibitors in development and cancer
- Prof. Martine Roussel
-
24. The Myc transcription factor network
- Prof. Robert N. Eisenman
- Meiosis: A Specialized Cell Cycle
-
25. Recombination and the formation of chiasmata in meiosis
- Prof. Matthew Whitby
- Archived Lectures *These may not cover the latest advances in the field
-
26. Geometric regulation of kinetochore orientation
- Prof. Yoshinori Watanabe
Printable Handouts
Navigable Slide Index
- Introduction
- Ubiquitin-proteasome and cell cycle progression
- What regulates the cell division cycle?
- Cyclin-dependent kinases
- Cdk1, Cdk2 and their regulators
- Regulated proteolysis is unidirectional
- Regulation by phosphorylation vs. proteolysis
- Advantages of regulated proteolysis
- The Ubiquitin-proteasome system
- The hierarchy of the ubiquitin pathway
- E2s and E3s ensure substrate specificity
- Regulation of the cell cycle by proteolysis
- Two major ubiquitin ligases control cell cycle
- SCF ubiquitin ligases
- Role of F-box proteins in the SCF complex
- Spatial arrangement of the SCF complex
- Mechanism of catalysis by the SCF
- Super-enzyme vs. typical enzyme
- The various F-box proteins in human
- 5 F-box proteins and their respective substrates
- Skp2 (Fbxl1)
- Skp2 is a positive regulator of CDKs
- Targeting of p21 to degradation by APC/C-Cdc20
- Beta-Trcp1 (Fbxw1) and beta-Trcp2 (Fbxw11)
- Function of beta-Trcp during replication stress
- beta-Trcp, after recovery from the replication stress
- Negative and positive regulation by beta-Trcp
- Fbxw7 (Fbw7 or Cdc4)
- Fbxw7 is a negative regulator of CDKs (when?)
- APC/C (anaphase promoting complex/cyclosome)
- APC/C contribution to cell cycle progression
- Activity of APC/C containing Cdc20 or Cdh1
- SCF controls mitosis by regulating APC/C activity
- APC/C controls G1 by regulating Skp2 stability
- APC/C-Cdh1 is mainly active in G1
- APC/C-Cdh1 activated in G2 after DNA damage
- Ubiquitin system and cell cycle - summary (1)
- Ubiquitin system and cell cycle - summary (2)
- Complexity of the system
- Cell cycle, ubiquitin system and cancer
- Proto-oncoprotein and tumor-suprresors
- Skp2 is a positive regulator of CDKs
- Skp2 is a proto-oncoprotein
- Tumor suppressors targeted by Skp2
- Fbxw7 is a negative regulator of CDKs
- Fbxw7 is a tumor suppressor
- Proto-oncoproteins targeted by Fbxw7
- beta-Trcp is a negative & positive CDKs regulator
- beta-Trcp is a proto-oncoprotein
- Cdh1 is a tumor suppressor
- Concluding remarks
Topics Covered
- Ubiquitin-proteasome system
- What regulates the cell division cycle?
- Cyclin dependent kinases
- Advantages of regulated proteolysis
- The hierarchy of the ubiquitin pathway
- E2s and E3s ensure substrate specificity
- Regulation of the cell cycle by proteolysis
- Two major ubiquitin ligases control cell cycle progression
- SCF ubiquitin ligases
- Mechanism of catalysis by the SCF
- F-box proteins
- Skp2
- betaTrcp1 and betaTrcp2
- DNA replication stress
- Fbxw7
- Anaphase promoting complex or cyclosome
- Cell cycle, ubiquitin system and cancer
Talk Citation
Pagano, M. (2009, April 30). Cell cycle control by the ubiquitin system in mammals [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved April 19, 2025, from https://doi.org/10.69645/FKST5886.Export Citation (RIS)
Publication History
- Published on April 30, 2009
Financial Disclosures
- Prof. Michele Pagano has not informed HSTalks of any commercial/financial relationship that it is appropriate to disclose.
Cell cycle control by the ubiquitin system in mammals
Published on April 30, 2009
35 min