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.
MeSH terms
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Acetates
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Acetic Acid
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Adsorption
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Aluminum Silicates
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DNA / metabolism*
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Electrochemistry
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Macromolecular Substances
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Magnesium
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Magnesium Chloride
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Microscopy, Electron*
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Molecular Structure
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Protein Conformation
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Rec A Recombinases / metabolism*
Substances
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Acetates
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Aluminum Silicates
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Macromolecular Substances
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Magnesium Chloride
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DNA
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Rec A Recombinases
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Magnesium
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Acetic Acid
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mica