Electron transfer across Aib oligopeptides

摘要

Long-range electron transfer(ET)in proteins relies on the efficiency of the peptide chains to support charge transfer processes.Therefore,understanding how the electron tunneling between a donor(D)and an acceptor(A)separated by model peptide bridges takes place is a relevant issue.Although a variety of studies has outlined interesting features of the ET processes,there are still aspects that remain elusive.The role of the peptide secondary structure is one of them,mainly because of the poor conformational control of the bridges so far employed and/or the absence of intramolecular hydrogen bonding.We have recently started a research programme aimed at unravelling the ET dynamics across well-defined peptide bridges.