Abstract
An artificial zinc porphyrin-myoglobin-based photo-chemical energy conversion system, consisting of ZnPP-Mb or ZnPE1-Mb as a photosensitizer, NADP+ as an electron acceptor, and triethanolamine as an electron donor, has been constructed to mimic photosystem I. The photoirradiated product is able to reduce a single-electron acceptor protein cytochrome c, but cannot catalyze the two-electron reduction of acetaldehyde by alcohol dehydrogenase, thus demonstrating a single electron transfer mechanism. Furthermore, the artificial system can bifunctionally promote oxidoredox reactions, depending on the presence or absence of a sacrificial electron donor, thus suggesting its potential application in electrochemical regen-eration steps involved in chemical transformation and/or energy conversion.
Original language | English |
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Pages (from-to) | 1203-1213 |
Number of pages | 11 |
Journal | International journal of biological sciences |
Volume | 7 |
Issue number | 8 |
DOIs | |
State | Published - 1 Jan 2011 |
Keywords
- Biosensitizer
- Myoglobin
- Oxidoredox reaction
- Photoelectrochemical energy conversion
- Zinc protoporphyrin