Article

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

Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy.
Journal of the American Chemical Society (impact factor: 9.91). 02/2005; 127(2):492-3. DOI:10.1021/ja043607e pp.492-3
Source: PubMed

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.

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    Roger R Hill, Sharon A Moore, David R Roberts
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Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

alpha-aminoisobutyric acid residue
 
donor-acceptor separation
 
electron-transfer activation energy
 
energy gap
 
intramolecular electron transfer
 
oligopeptides
 
peptide length