PhD Thesis in Biophysics and Biophysical Chemistry
Lateral Diffusion and Correlation of Membrane Proteins by
the Combination of Single Molecule Microscopy and Surface Scattering
Physical Chemistry of Biosystems, Univ. Heidelberg (Prof. M. Tanaka)
Within the graduate course GRK 1114 “Optical Techniques for Measurement of Interfacial Transport
Phenomena”, we develop new experimental and theoretical tools to
quantitatively determine (i) the frictional drags exerted to membrane proteins
(e.g. various surface glycoproteins from trypanosoma) and (ii) the influence of
external fields, e.g. hydrodynamic shear fields (micro-fluidics) or tangential
electric fields (membrane electrophoresis) on their lateral
correlation/diffusion.
The lateral diffusion of proteins in the length scales of some tens of nm up to some tens
of µm can be tracked by the two color single molecule tracking microscopy
developed in our lab, while the lateral correlation of proteins can be
determined by the grazing-incidence small angle x-ray/neutron scattering
with a micro-focused beam. X-ray/neutron scattering experiments will be
conducted at large facilities such as European Synchrotron Radiation Facility
(Grenoble) and Institute Laue-Langevin (Grenoble).
If you have interests, please contact:
Prof. Motomu Tanaka (Tanaka_at_uni-heidelberg.de)
Dr. Wasim Abuillan (abuillan_at_uni-heidelberg.de)
References
M. Tanaka and E. Sackmann, Nature, 437, 656 (2005)
O. Purrucker, A. Förtig, R. Jordan, E. Sackmann, M. Tanaka, Phys. Rev. Lett. 98,
078102 (2007)
R. Oliveira, E. Schneck, B. Quinn, O. Konovalov, K. Brandenburg, T. Gutsmann, T.
Gill, C. Hanna, D. Pink, M. Tanaka, Phys. Rev. E, 81, 041901 (2010)