Int J Biol Sci 2011; 7(8):1203-1213. doi:10.7150/ijbs.7.1203
Photoactivation Studies of Zinc Porphyrin-Myoglobin System and Its Application for Light-Chemical Energy Conversion
1. Department of Biological Science and Technology, National Chiao Tung University, 30068, Hsin-Chu, Taiwan, Republic of China
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 regeneration steps involved in chemical transformation and/or energy conversion.
Keywords: photoelectrochemical energy conversion, zinc protoporphyrin, myoglobin, oxidoredox reaction, biosensitizer
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How to cite this article:
Chang CH, Hu YT, Lo CF, Luo L, Lin HM, Chang CH, Lin CY, Diau EWG, Wu TK. Photoactivation Studies of Zinc Porphyrin-Myoglobin System and Its Application for Light-Chemical Energy Conversion. Int J Biol Sci 2011; 7(8):1203-1213. doi:10.7150/ijbs.7.1203. Available from http://www.ijbs.com/v07p1203.htm