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Review pathway analysis for peptide‐mediated electronic coupling in the super‐exchange mechanism of ET and EET
Author(s) -
Kawatsu Tsutomu
Publication year - 2013
Publication title -
peptide science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.22142
Subject(s) - quantum tunnelling , chemistry , coupling (piping) , chemical physics , electronic structure , singlet state , excitation , condensed matter physics , computational chemistry , physics , atomic physics , quantum mechanics , excited state , materials science , metallurgy
Electron and excitation energy transfers (ET and EET) have an important role in biological energy‐exchange processes. Proteins are an inhomogeneous and anisotropic medium for ET and EET. The protein structure influences electronic coupling, an important factor for ET and EET. The structure factor may be predicted by obtaining information about the tunneling pathways. The present paper mainly focuses on tunneling pathway analysis using the tunneling current (flux) of the electron or configuration density. The tunneling pathways for ET and singlet EET through peptides are introduced using tunneling current (flux) analysis. These tunneling pathways differ greatly between ET and singlet EET. This paper also reviews both the theoretical background and other methods for determining electronic tunneling pathways. These pathways are related to the effect of protein coordinates on the electronic coupling between the initial and final states of the ET and EET. © 2012 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 100: 100–113, 2013.