Using the Energy Landscape to Elucidate Protein-Ligand Interactions

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• Alasdair Keith, University of Cambridge
• Wednesday 29 May 2019, 14:15-14:35
• Department of Chemistry, Cambridge, Unilever lecture theatre.

If you have a question about this talk, please contact Lisa Masters.

First Year PhD Report

Due to polymorphism and the long timescales involved, it is difficult to characterise the precise nature of protein-ligand interactions experimentally. Many biological systems exhibit broken ergodicity, thus limiting the usefulness of standard molecular dynamics and Monte Carlo procedures. Basin-hopping and discrete path sampling provide alternative techniques that can effectively explore configuration space and provide data to construct kinetic transition networks, respectively. These methods have been applied to the enzyme HemS, which experiment suggests can regulate haem and NADH interactions to control a novel oxygen-independent haem-breakdown process. Specifically, the results presented provide new insight into the conformation of a double-phenylalanine gate – thought to be essential to the regulatory nature of the protein – and its response to the approach of NADH towards haem.

This talk is part of the Theory - Chemistry Research Interest Group series.

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