A lipidic-sponge phase screen for membrane protein crystallization

Wöhri, A.B. et al. (2008) A lipidic-sponge phase screen for membrane protein crystallization. Structure, 16(7), pp. 1003-1009. (doi:10.1016/j.str.2008.06.003)

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Abstract

A major current deficit in structural biology is the lack of high-resolution structures of eukaryotic membrane proteins, many of which are key drug targets for the treatment of disease. Numerous eukaryotic membrane proteins require specific lipids for their stability and activity, and efforts to crystallize and solve the structures of membrane proteins that do not address the issue of lipids frequently end in failure rather than success. To help address this problem, we have developed a sparse matrix crystallization screen consisting of 48 lipidic-sponge phase conditions. Sponge phases form liquid lipid bilayer environments which are suitable for conventional hanging- and sitting-drop crystallization experiments. Using the sponge phase screen, we obtained crystals of several different membrane proteins from bacterial and eukaryotic sources. We also demonstrate how the screen may be manipulated by incorporating specific lipids such as cholesterol; this modification led to crystals being recovered from a bacterial photosynthetic core complex.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Fraser, Dr Niall and Cogdell, Professor Richard
Authors: Wöhri, A.B., Johansson, L.C., Wadsten-Hindrichsen, P., Wahlgren, W.Y., Fischer, G., Horsefield, R., Katona, G., Nyblom, M., Öberg, F., Young, G., Cogdell, R.J., Fraser, N.J., Engström, S., and Neutze, R.
College/School:College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology
College of Medical Veterinary and Life Sciences > Institute of Cardiovascular and Medical Sciences
Journal Name:Structure
ISSN:0969-2126

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