Photoactivation studies of zinc porphyrin-myoglobin system and its application for light-chemical energy conversion

Chin Hao Chang, Yi Ting Hu, Chen Fu Lo, Liyang Luo, Hung Ming Lin, Cheng Hsiang Chang, Ching Yao Lin, Wei-Guang Diau, Tung-Kung Wu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

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 languageEnglish
Pages (from-to)1203-1213
Number of pages11
JournalInternational journal of biological sciences
Volume7
Issue number8
DOIs
StatePublished - 1 Jan 2011

Keywords

  • Biosensitizer
  • Myoglobin
  • Oxidoredox reaction
  • Photoelectrochemical energy conversion
  • Zinc protoporphyrin

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