Keywords: Carbon, Charge Transfer, Conformations, Dissociation, Electron Transitions, Electron Tunneling, Hydrogen Bonds, Probability Density Function, Electron Transfer, Integrated Density Function, Oligo-Peptides, Sequential Hopping, Nitrogen Compounds,
Affiliations: *** IBB - CNR ***
Dipartimento di Chimica, Università di Napoli Federico II, 80126 Napoli, Italy
Dipartimento di Scienze Chimiche, Università di Padova, 35131 Padova, Italy
Istituto di Biostrutture e Bioimmagini, CNR, 80134 Napoli, Italy
References: Not available.
Electron transfer to and conformational preferences of Aib oligo-peptides
The physico-chemical effects modulating the conformational behavior and the rate of intramolecular dissociative electron transfer in donor-Aib n-peroxide systems were studied experimentally and by using an integrated density functional/continuum solvent model. This study was aimed at understanding the anomalous distance effect on the electron transfer rate previously observed with a series of molecules in which the phthalimide radical anion served as the intramolecular donor. The experimental and theoretical results allowed us to rule out the sequential hopping mechanism. Besides the important role played by the intramolecular hydrogen-bond shortcuts, it also appears that, for certain peptide lengths, the process could be conformationally gated.
Electron transfer to and conformational preferences of Aib oligo-peptides
Aloj L, Aurilio M, Rinaldi V, D'Ambrosio L, Tesauro D, Peitl PK, Maina T, Mansi R, Von Guggenberg E, Joosten L, Sosabowski JK, Breeman WA, De Blois E, Koelewijn S, Melis M, Waser B, Beetschen K, Reubi JC, De Jong M * The EEE project(561 views) Proc Int Cosm Ray Conf Icrc Universidad Nacional Autonoma De Mexico, 2007; 5(HEPART2): 977-980. Impact Factor:0 ViewExport to BibTeXExport to EndNote