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Exploiting advanced methods for protein structure prediction

  • Full or part time
    Dr Rigden
  • Application Deadline
    Applications accepted all year round
  • Self-Funded PhD Students Only
    Self-Funded PhD Students Only

Project Description

Protein structural information is crucial for an understanding of protein function and evolution. Currently, only there is only experimental data for a tiny fraction of the protein universe. Homology modelling allows structure predictions for many more proteins, but there is no structural information at all for a large number of families. Membrane protein families are particularly poorly understood due to the extra experimental difficulties they bring.

The project will entail application of new methods for protein structure prediction, the state-of-the-art fragment assembly ab initio program Rosetta and/or contact prediction-based methods such as Pconsfold (Michel et al., 2014). The proteins to be addressed may be of various origins, including locally produced genomes and proteomes, but are likely to include families of currently unknown structure but proven medical or biotechnological interest. Membrane proteins will also be a distinct focus. In order to achieve the fullest possible picture, a battery of structure-based function prediction methods will be applied to models produced and those data complemented by sequence- and context-derived information (Rigden, 2011). There may also be opportunities for the student to further the development of AMPLE, a joint Liverpool-CCP4 program for solving crystal structures using ab initio models (Bibby et al., 2012).

The project offers an exciting chance to work at the cutting edge of protein bioinformatics, leveraging information from structure predictions, complemented by a broad range of additional methods, to shed light on protein function.

Training:
The project focuses on the fast-moving cutting edge of protein modelling and will provide extensive training in the current leading program Rosetta. Ab initio and contact prediction-based modelling are among the most exciting areas of contemporary bioinformatics and the student will be well placed on completion of the project to exploit the ever-increasing possibilities for its application. A full exploration of the predictive power of ab initio models for protein function requires an integrated approach to understand structure-function and their co-evolution with time. The student will therefore also be exposed to the full spectrum of protein sequence- and structure-based methods and to techniques for inferring functional relationships from genomic data.

Funding Notes

This project is open to applicants who are able to obtain their own funding for tuition fee, consumable laboratory costs and living expenses.

A fees bursary may be available for suitably qualified applicants.

The 2015-16 PhD tuition fees are: UK/EU students £4,052.00 p.a.; international students £17,690.00.

In addition fees of between £1,000 and £12,000 per year are required for research costs depending on the type of project. An estimated maintenance allowance of £820 per month is required to cover accommodation, meals, transport etc.

The above figures are for guidance only, details will be provided when an offer is made.

References

Bibby J., Keegan R.M., Mayans O., Winn M.D. and Rigden D.J. (2012) AMPLE: a cluster-and-truncate approach to solve crystal structures of small proteins using rapidly computed ab initio models. Acta Crystallographica D68, 1622-1631.
Michel, M., Hayat, S., Skwark, M. J., Sander, C., Marks, D. S., and Elofsson, A. (2014). PconsFold: improved contact predictions improve protein models. Bioinformatics, 30(17), i482-i488.
Rigden, D.J. (2011) Ab initio modelling led annotation suggests nucleic acid binding function for many DUFs. OMICS: A Journal of Integrative Biology 15, 431-438.

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