The authors have declared no conflicts of interest in relation to this article.
Insights into the binding of intrinsically disordered proteins from molecular dynamics simulation
Article first published online: 27 AUG 2013
© 2013 John Wiley & Sons, Ltd.
Wiley Interdisciplinary Reviews: Computational Molecular Science
Volume 4, Issue 3, pages 182–198, May/June 2014
How to Cite
Baker, C. M. and Best, R. B. (2014), Insights into the binding of intrinsically disordered proteins from molecular dynamics simulation. WIREs Comput Mol Sci, 4: 182–198. doi: 10.1002/wcms.1167
- Issue published online: 11 APR 2014
- Article first published online: 27 AUG 2013
- FEBS Return to Europe Fellowship
- Intramural Research Program of the National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health (NIH)
Intrinsically disordered proteins (IDPs) are a class of protein that, in the native state, possess no well-defined secondary or tertiary structure, existing instead as dynamic ensembles of conformations. They are biologically important, with approximately 20% of all eukaryotic proteins disordered, and found at the heart of many biochemical networks. To fulfil their biological roles, many IDPs need to bind to proteins and/or nucleic acids. And although unstructured in solution, IDPs typically fold into a well-defined three-dimensional structure upon interaction with a binding partner. The flexibility and structural diversity inherent to IDPs makes this coupled folding and binding difficult to study at atomic resolution by experiment alone, and computer simulation currently offers perhaps the best opportunity to understand this process. But simulation of coupled folding and binding is itself extremely challenging; these molecules are large and highly flexible, and their binding partners, such as DNA or cyclins, are also often large. Therefore, their study requires either simplified representations, advanced enhanced sampling schemes, or both. It is not always clear that existing simulation techniques, optimized for studying folded proteins, are well suited to IDPs. In this article, we examine the progress that has been made in the study of coupled folding and binding using molecular dynamics simulation. We summarize what has been learnt, and examine the state of the art in terms of both methodologies and models. We also consider the lessons to be learnt from advances in other areas of simulation and highlight the issues that remain of be addressed.