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Probing DNA properties by a combination of molecular modelling and EPR spectroscopy (OGANESYANU16SF)

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  • Full or part time
    Dr Oganesyan
  • Application Deadline
    No more applications being accepted
  • Self-Funded PhD Students Only
    Self-Funded PhD Students Only

Project Description

The knowledge about structures and conformational dynamics of nucleic acids in DNA is crucial to understand their biological functions (e.g. DNA reparation and replication mechanisms), including interactions with proteins and lipids. Such knowledge is important for the drug development strategies. Electron Paramagnetic Resonance (EPR) with paramagnetic spin probes is particularly suitable spectroscopic technique to study the dynamics and conformational changes in complex molecular systems such as DNA.

Recent research undertaken in the Oganesyan group has demonstrated that EPR in combination with Molecular Dynamics (MD) simulations are able to offer a detailed information about the molecular motions and structure in complex soft matter and bio-molecular systems [1, 2]. Such a combined MD-EPR simulation approach greatly simplifies the interpretation and analysis of experimental spectra providing a new level of detail in molecular motions and order. Our MD-EPR methodology has been successfully applied to characterise liquid crystals [3, 4] and proteins [2, 5]. This included the ability to characterise protein motions and molecular behaviour across the critical points of the phase transitions in liquid crystals.

The goal of this PhD project is apply a combined MD-EPR approach to DNA systems. It will involve developing computer models of spin labelled DNA molecules as well as DNA-protein and DNA-lipid complexes and testing them against experimental EPR measurements carried out under different conditions.
The project will combine state-of-the-art MD modelling techniques with EPR and will provide a PhD student with the unique opportunity for training in both computer modelling and experimental methods.

Funding Notes

This PhD project is offered on a self-funding basis. It is open to applicants with funding or those applying to funding sources. Details of tuition fees can be found at http://www.uea.ac.uk/pgresearch/pgrfees.

A bench fee is also payable on top of the tuition fee to cover specialist equipment or laboratory costs required for the research. The amount charged annually will vary considerably depending on the nature of the project and applicants should contact the primary supervisor for further information about the fee associated with the project.

References

1) V.S. Oganesyan in SPR: Electron Paramagnetic Resonance, Royal Society of Chemistry, London, 2015, 24, 32-61.
2) V.S. Oganesyan, Phys. Chem. Chem. Phys. 2011, 13, 4724-4737.
3) F. Chami, M.R. Wilson, V.S. Oganesyan, Soft Matter 2012, 8, 6823-6833.
4) H. Gopee, A.N. Cammidge, V.S. Oganesyan, Angew. Chem. Int. Ed. 2013, 52, 8917-8920.
5) E. Kuprusevicius, G.F. White and V.S. Oganesyan, Faraday Discuss. 2011, 148, 283-298.

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