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J Am Chem Soc. 2005 Jan 19;127(2):492-3.

Evidence against the hopping mechanism as an important electron transfer pathway for conformationally constrained oligopeptides.

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  • 1Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy.

Abstract

The rate constant of intramolecular electron transfer through oligopeptides based on the alpha-aminoisobutyric acid residue was determined as a function of the peptide length and found to depend weakly on the donor-acceptor separation. By measuring the electron-transfer activation energy and estimating the energy gap between donor and bridge, we were able to discard the electron hopping mechanism.

PMID:
15643851
[PubMed - indexed for MEDLINE]
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