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Scanning tunneling microscopy of uncoated recA-DNA complexes
1Institute of Cell Biology, Swiss Federal Institute of Technology, Zurich, Switzerland.
Science (New York, N.Y.)
|March 31, 1989
Abstract:
Uncoated recA-DNA complexes were imaged with the scanning tunneling microscope (STM). The images, which reveal the right-handed helical structure of the complexes with subunits clearly resolved, are comparable in quality to STM images of metal-coated specimens. Possible conduction mechanisms that allow STM imaging of biological macromolecules are discussed.