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The Biophysics Group (formerly the Protein Dynamics Unit) is interested in the permeation of ions through biological membrane channels such as potassium, calcium, sodium and gramicidin chanels. We use various theoretical and computational tools such as Molecular dynamics and Brownian dynamics to gain a physical insight into the permeation processes. |
Research Staff |
Collaborations |
| Theoretical Physics: | |
| ANUSF: | Thomas Huber, Andrey Bliznyuk, Alistair Rendell |
| ANUSF Visualisation: | Drew Whitehouse, Ajay Limaye, Stuart Ramsden |
Animations |
See our Animations and Demonstrations page |
Potassium Channel (Stuart Ramsden, NUSF) |
Current Research |
The Potassium Channel:Using the recently unveiled structure of the Potassium Channel we employ a combination of electrostatics, Brownian dynamics and molecular dynamics to investigate the way in which this biological channel discriminates between potasisum and sodium ions, and reproduce some physiological attributes of conduction.Visit our potassium channel page for a chapter by chapter explanation of the this channel using samples from our recent narrated video of the K + channel. |
The
Calcium Channel:
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Testing Continuum Models of Ion Channels:We have been making a systematic study of the validity of continuum theories of biological ion channels by comparison with Brownian dynamics simulations. More details can be found here |
Gramicidin A:Here we show a summary of our efforts to determine the energy landscape in Gramicidin A using a variety of theoretical techniques. |
Photo Gallery |