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Persistence of structure over fluctuations in biological electron-transfer reactions.

Publication ,  Journal Article
Balabin, IA; Beratan, DN; Skourtis, SS
Published in: Physical review letters
October 2008

In the soft-wet environment of biomolecular electron transfer, it is possible that structural fluctuations could wash out medium-specific electronic effects on electron tunneling rates. We show that beyond a transition distance (2-3 A in water and 6-7 A in proteins), fluctuation contributions to the mean-squared donor-to-acceptor tunneling matrix element are likely to dominate over the average matrix element. Even though fluctuations dominate the tunneling mechanism at larger distances, we find that the protein fold is "remembered" by the electronic coupling, and structure remains a key determinant of electron transfer kinetics.

Duke Scholars

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

October 2008

Volume

101

Issue

15

Start / End Page

158102

Related Subject Headings

  • Thermodynamics
  • Proteins
  • Protein Structure, Secondary
  • Myoglobin
  • Models, Molecular
  • Models, Chemical
  • Models, Biological
  • General Physics
  • Escherichia coli Proteins
  • Cytochrome b Group
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Balabin, I. A., Beratan, D. N., & Skourtis, S. S. (2008). Persistence of structure over fluctuations in biological electron-transfer reactions. Physical Review Letters, 101(15), 158102. https://doi.org/10.1103/physrevlett.101.158102
Balabin, Ilya A., David N. Beratan, and Spiros S. Skourtis. “Persistence of structure over fluctuations in biological electron-transfer reactions.Physical Review Letters 101, no. 15 (October 2008): 158102. https://doi.org/10.1103/physrevlett.101.158102.
Balabin IA, Beratan DN, Skourtis SS. Persistence of structure over fluctuations in biological electron-transfer reactions. Physical review letters. 2008 Oct;101(15):158102.
Balabin, Ilya A., et al. “Persistence of structure over fluctuations in biological electron-transfer reactions.Physical Review Letters, vol. 101, no. 15, Oct. 2008, p. 158102. Epmc, doi:10.1103/physrevlett.101.158102.
Balabin IA, Beratan DN, Skourtis SS. Persistence of structure over fluctuations in biological electron-transfer reactions. Physical review letters. 2008 Oct;101(15):158102.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

October 2008

Volume

101

Issue

15

Start / End Page

158102

Related Subject Headings

  • Thermodynamics
  • Proteins
  • Protein Structure, Secondary
  • Myoglobin
  • Models, Molecular
  • Models, Chemical
  • Models, Biological
  • General Physics
  • Escherichia coli Proteins
  • Cytochrome b Group