Postgraduate Seminar Thursday 12th July, room 564, 5pm Reverse Monte Carlo Modelling of GeO2 Glass Robin Orman Germania is one of the three most-studied systems in glass science, but still the differences between its structure and that of silica glass have not been definitively discriminated. This talk will present neutron and high-energy X-ray diffraction data of vitreous GeO2 that have been modelled with a Reverse Monte Carlo technique, and from the results the relationship to the structure of SiO2 and the First Sharp Diffraction Peak will be discussed. Structural determination of Membrane Proteins by Solid-State NMR Amy Webber Determining the three-dimensional structure of biological molecules such as proteins is a key step to understanding their function and their role in disease mechanisms. Despite their relevance in structural biology, less than 100 membrane proteins structures have been solved as compared to 30,000 for soluble proteins. The solid-state NMR methodology is hence applied to probe membrane protein structures in their natural lipid environment, via a combination of Double Quantum filtration and two dimensional experiments to determine throughspace and bonding arrangements. The postgraduate seminar series is a series of informal talks run by postgraduates for postgraduates. All postgraduates are welcome and refreshments are always provided!