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Electrical Conductivity of Ferritin Proteins by Conductive AFMElectrical conductivity measurements were performed on single apoferritin and holoferritin molecules by conductive atomic force microscopy. Conductivity of self-assembled monolayer films of ferritin molecules on gold surfaces was also measured. Holoferritin was 5-25 times more conductive than apoferritin, indicating that for holoferritin most electron-transfer goes through the ferrihydrite core. With 1 V applied, the average electrical currents through single holoferritin and apoferritin molecules were 2.6 PA and 0.19 PA, respectively.
Document ID
20060045797
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
Authors
Xu, Degao
(Brigham Young Univ. Provo, UT, United States)
Watt, Gerald D.
(Brigham Young Univ. Provo, UT, United States)
Harb, John N.
(Brigham Young Univ. Provo, UT, United States)
Davis, Robert C.
(Brigham Young Univ. Provo, UT, United States)
Date Acquired
August 23, 2013
Publication Date
March 25, 2005
Publication Information
Publication: Nano Letters
Publisher: American Chemical Society
Volume: 5
Issue: 4
Subject Category
Chemistry And Materials (General)
Funding Number(s)
CONTRACT_GRANT: NCC1-02005
Distribution Limits
Public
Copyright
Other

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