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Yusuf Hamied Department of Chemistry

 

Professor of Chemical Physics

The self-assembly of complex mesoscopic structures, the folding of proteins, and the complicated phenomenology of glasses are all manifestations of the underlying potential energy surface (PES). In each of these fields related ideas have emerged to explain and predict chemical and physical properties in terms of the PES. In studies of clusters and glasses the PES itself is often investigated directly, whereas for proteins and other biomolecules it is also common to define free energy surfaces, as the figure below illustrates for lysozyme.

Applications of energy landscape theory in my group range from studies of tunnelling splitting patterns in small molecules to computer simulation of protein folding and misfolding, including aggregation of misfolded proteins. Other active research topics include global optimisation and investigation of how the thermodynamic and dynamic properties of glasses are related to the underlying PES.

Two recent advances are now providing new insight into larger systems. Discrete path sampling enables dynamical properties to be obtained efficiently, and is being used to calculate folding rates for proteins. Unexpected connections between dynamics and thermodynamics have also been revealed by the application of catastrophe theory to energy landscapes, and new results are now being obtained to characterize phase transitions.

Publications

Combining experiment and energy landscapes to explore anaerobic heme breakdown in multifunctional hemoproteins.
AD Keith, EB Sawyer, DCY Choy, Y Xie, GS Biggs, OJ Klein, PD Brear, DJ Wales, PD Barker
– Physical Chemistry Chemical Physics
(2023)
Energy landscapes for proteins described by the UNRES coarse-grained potential.
PA Wesołowski, AK Sieradzan, MJ Winnicki, JWR Morgan, DJ Wales
– Biophysical chemistry
(2023)
303,
107107
Global analysis of energy landscapes for materials modeling: A test case for C60.
G Csányi, JWR Morgan, DJ Wales
– Journal of Chemical Physics
(2023)
159,
104107
Energy landscapes and heat capacity signatures for peptides correlate with phase separation propensity.
Nicy, R Collepardo-Guevara, JA Joseph, DJ Wales
– QRB discovery
(2023)
4,
e7
Exploring energy landscapes for solid-state systems with variable cells at the extended tight-binding level
P Pracht, JWR Morgan, DJ Wales
– The Journal of chemical physics
(2023)
159,
064801
Exact electronic states with shallow quantum circuits from global optimisation
HGA Burton, D Marti-Dafcik, DP Tew, DJ Wales
– npj Quantum Information
(2023)
9,
75
On the Mechanism of Polaritonic Rate Suppression from Quantum Transition Paths
MC Anderson, EJ Woods, TP Fay, DJ Wales, DT Limmer
– The journal of physical chemistry letters
(2023)
14,
6888
Triplet-Encoded Prebiotic RNA Aminoacylation.
M Su, C Schmitt, Z Liu, SJ Roberts, KC Liu, K Röder, A Jäschke, DJ Wales, JD Sutherland
– J Am Chem Soc
(2023)
145,
15971
Energy Landscapes and Heat Capacity Signatures for Monomers and Dimers of Amyloid-Forming Hexapeptides.
Nicy, DJ Wales
– International journal of molecular sciences
(2023)
24,
10613
Stable and scalable computation of state visitation probabilities in finite Markov chains.
DJ Sharpe, DJ Wales
– The Journal of Chemical Physics
(2023)
158,
211103
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Research Group

Research Interest Groups

Telephone number

01223 336354

Email address

dw34@cam.ac.uk