Abstract
A new computational scheme to analyze electron transfer (ET) pathways in large biomolecules is presented with applications to ETs in bacterial photosynthetic reaction center. It consists of a linear combination of fragment molecular orbitals and an electron tunneling current analysis, which enables an efficient first-principle analysis of ET pathways in large biomolecules. The scheme has been applied to the ET from menaquinone to ubiquinone via nonheme iron complex in bacterial photosynthetic reaction center. It has revealed that not only the central Fe2+ ion but also particular histidine ligands are involved in the ET pathways in such a way to mitigate perturbations that can be caused by metal ion substitution and depletion, which elucidates the experimentally observed insensitivity of the ET rate to these perturbations.
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Kitoh-Nishioka, H., Ando, K. (2015). Electron Transfer Pathway Analysis in Bacterial Photosynthetic Reaction Center. In: Akasaka, T., Osuka, A., Fukuzumi, S., Kandori, H., Aso, Y. (eds) Chemical Science of π-Electron Systems. Springer, Tokyo. https://doi.org/10.1007/978-4-431-55357-1_39
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DOI: https://doi.org/10.1007/978-4-431-55357-1_39
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-55356-4
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