Orientation of biomolecular assemblies in a microfluidic jet

Details Orientation of biomolecular assemblies in a microfluidic jet Orientation of biomolecular assemblies in a microfluidic jet

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010njph...12d3056p&link_type=abstract

New Journal of Physics, Volume 12, Issue 4, pp. 043056 (2010).

Physics

Scientific paper

We have investigated multilamellar lipid assemblies in a microfluidic jet, operating at high shear rates of the order of 107 s-1. Compared to classical Couette cells or rheometers, the shear rate was increased by at least 2-3 orders of magnitude, and the sample volume was scaled down correspondingly. At the same time, the jet is characterized by high extensional stress due to elongational flow. A focused synchrotron x-ray beam was used to measure the structure and orientation of the lipid assemblies in the jet. The diffraction patterns indicate conventional multilamellar phases, aligned with the membrane normals oriented along the velocity gradient of the jet. The results indicate that the setup may be well suited for coherent diffractive imaging of oriented biomolecular assemblies and macromolecules at the future x-ray free electron laser (XFEL) sources.

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