期刊
BIOPHYSICAL JOURNAL
卷 96, 期 2, 页码 329-338出版社
CELL PRESS
DOI: 10.1016/j.bpj.2008.09.046
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资金
- Maurice E. Muller Foundation of Switzerland
- Swiss National Center of Competence in Research on Nanoscale Science
- European Commission Project [29084 NANOMOT]
- Swiss University Conference
- JPK Instruments AG, Berlin, Germany
Atomic force microscopy (AFM) is an ideal method to study the surface topography of biological membranes. It allows membranes that are adsorbed to flat solid supports to be raster-scanned in physiological solutions with an atomically sharp tip. Therefore, AFM is capable of observing biological molecular machines at work. In addition, the tip can be tethered to the end of a single membrane protein, and forces acting on the tip upon its retraction indicate barriers that occur during the process of protein unfolding. Here we discuss the fundamental limitations of AFM determined by the properties of cantilevers, present aspects of sample preparation, and review results achieved on reconstituted and native biological membranes.
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