Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Nanoscale patterning of kinesin motor proteins and its role in guiding microtubule motility

Nanoscale patterning of kinesin motor proteins and its role in guiding microtubule motility Biomolecular motor proteins have the potential to be used as ‘nano-engines’ for controlled bioseparations and powering nano- and microelectromechanical systems. In order to engineer such systems, biocompatible nanofabrication processes are needed. In this work, we demonstrate an electron beam nanolithography process for patterning kinesin motor proteins. This process was then used to fabricate discontinuous kinesin tracks to study the directionality of microtubule movement under the exclusive influence of surface bound patterned kinesin. Microtubules moved much farther than predicted from a model assuming infinite microtubule stiffness on tracks with discontinuities of 3 μm or less, consistent with a free-end searching mechanism. As the track discontinuities exceeded 3 μm, the measured and predicted propagation distances converged. Observations of partially fixed microtubules suggest that this behavior results from the interaction of the microtubules with the surface and is not governed predominately by the microtubule flexural rigidity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Biomedical Microdevices Springer Journals

Nanoscale patterning of kinesin motor proteins and its role in guiding microtubule motility

Loading next page...
 
/lp/springer-journal/nanoscale-patterning-of-kinesin-motor-proteins-and-its-role-in-guiding-6RqbXjgb2T

References (31)

Publisher
Springer Journals
Copyright
Copyright © 2008 by Springer Science+Business Media, LLC
Subject
Engineering; Biomedical Engineering; Biological and Medical Physics, Biophysics; Nanotechnology; Engineering Fluid Dynamics
ISSN
1387-2176
eISSN
1572-8781
DOI
10.1007/s10544-008-9237-9
pmid
18989786
Publisher site
See Article on Publisher Site

Abstract

Biomolecular motor proteins have the potential to be used as ‘nano-engines’ for controlled bioseparations and powering nano- and microelectromechanical systems. In order to engineer such systems, biocompatible nanofabrication processes are needed. In this work, we demonstrate an electron beam nanolithography process for patterning kinesin motor proteins. This process was then used to fabricate discontinuous kinesin tracks to study the directionality of microtubule movement under the exclusive influence of surface bound patterned kinesin. Microtubules moved much farther than predicted from a model assuming infinite microtubule stiffness on tracks with discontinuities of 3 μm or less, consistent with a free-end searching mechanism. As the track discontinuities exceeded 3 μm, the measured and predicted propagation distances converged. Observations of partially fixed microtubules suggest that this behavior results from the interaction of the microtubules with the surface and is not governed predominately by the microtubule flexural rigidity.

Journal

Biomedical MicrodevicesSpringer Journals

Published: Nov 7, 2008

There are no references for this article.