PhD student

Uhlmann Lab | Chromosome Organisation by Dynamic Cohesin Complexes

Key information

Research topics

A 2027 Crick PhD project with Frank Uhlmann.

Project background and description

In the Chromosome Segregation Laboratory, we investigate molecular mechanisms that underpin faithful chromosome segregation during cell division. We use various model organisms to study the contribution of Structural Maintenance of Chromosome (SMC) complexes to sister chromatid cohesion and chromosome condensation, essential processes that ensure faithful segregation of centimetre-long chromosomal DNA molecules within micrometre-sized cells.

In this project, we will investigate how the SMC complex ‘Cohesin’ fulfils a second important role by building interphase chromatin architectural features, including chromatin loops and topologically associating domains. Widely recognised as contributing to genome organisation and transcriptional control, the mechanism by which cohesin shapes the interphase genome remains incompletely understood.

This project will use chemical biology and genomics tool development to visualise the real-time behaviour of Cohesin while it builds interphase chromatin architectural features. The outcome will inform our understanding not only of Cohesin function, but also of how the wider family of SMC complexes act in genome organisation and stability.
Below you can find a recent review on the subject(1), as well as research publications from the last four PhD students who graduated from our laboratory(2-5).

Candidate background

This project requires a strong interest in molecular mechanisms that underpin fundamental cellular processes, in this case chromatin organisation in the cell nucleus. A background in, and experience with, genomics techniques and computational data analysis will be an advantage. Projects might also use biochemical, structural, and biophysical approaches.

Lab-specific question

Why would you like to join the Chromosome Segregation Laboratory, and how does your past experience prepare you for joining us.

References

1. Uhlmann, F. (2025) A unified model for cohesin function in sisterchromatid cohesion and chromatin loop formation. Molecular Cell85 : 1058–1071. PubMed abstract
2. Glaser, S., Molodtsov, M.I., Diffley, J.F.X. and Uhlmann, F. (2025) Replisome passage through the cohesin ring. Cell188 : 5618–5631 .e5614. PubMed abstract
3. Takacs, L., Gerontogianni, L., Quililan, K., Flynn, H. and Uhlmann, F. (2025) Evidence of substrate control of Cdk phosphorylation during the budding yeast cell cycle. Cell Reports44 : . PubMed abstract
4. Richeldi, M., Pobegalov, G., Higashi, T.L., Gmurczyk, K., Uhlmann, F. and Molodtsov, M.I. (2024) Mechanical disengagement of the cohesin ring. Nature Structural & Molecular Biology31 : 23–31. PubMed abstract
5. Tang, M., Pobegalov, G., Tanizawa, H., Chen, Z.A., Rappsilber, J., Molodtsov, M., . . . Uhlmann, F. (2023) Establishment of dsDNA-dsDNA interactions by the condensin complex. Molecular Cell83 : 3787–3800 .e3789. PubMed abstract

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