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An introduction to cell motility for the physical scientist.pdf

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An introduction to cell motility for the physical scientist

This content has been downloaded from IOPscience. Please scroll down to see the full text. Download details: IP Address: 99 This content was downloaded on 05/07/2014 at 15:23 Please note that terms and conditions apply. An introduction to cell motility for the physical scientist View the table of contents for this issue, or go to the journal homepage for more 2004 Phys. Biol. 1 T1 (/1478-3975/1/1/T01) Home Search Collections Journals About Contact us My IOPscience INSTITUTE OF PHYSICS PUBLISHING PHYSICAL BIOLOGY Phys. Biol. 1 (2004) T1–T10 PII: S1478-3967(04)70333-2 TUTORIAL An introduction to cell motility for the physical scientist Daniel A Fletcher1 and Julie A Theriot2 1 Department of Bioengineering and Biophysics Program, University of California at Berkeley, Berkeley, CA 94720, USA 2 Departments of Biochemistry and of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA Received 10 October 2003 Accepted for publication 11 December 2003 Published 12 February 2004 Online at /PhysBio/1/T1 (DOI: 10.1088/1478-3967/1/1/T01) Abstract Directed, purposeful movement is one of the qualities that we most closely associate with living organisms, and essentially all known forms of life on this planet exhibit some type of self-generated movement or motility. Even organisms that remain sessile most of the time, like flowering plants and trees, are quite busy at the cellular level, with large organelles, including chloroplasts, constantly racing around within cellular boundaries. Directed biological movement requires that the cell be able to convert its abundant stores of chemical energy into mechanical energy. Understanding how this mechanochemical energy transduction takes place and understanding how small biological forces generated at the molecular level are marshaled and organized for large-scale cellular or organismal movements are the focus of the field of cell motility. This tutorial, aimed at readers with a background in physica