Metallo-vesicular catalysis: A mixture of vesicular cysteine/iron mediates oxidative pH switchable catalysis
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- 作者：Mohammad Akbarzadeha ; Zainab Moosavi-Movahedib ; z.moosavi@ccerci.ac.ir" class="auth_mail" title="E-mail the corresponding author ; Abbas Shockravic ; Reza Jafaric ; Khodadad Nazarid ; Nader Sheibanie ; Ali Akbar Moosavi-Movahedia ; f ; moosavi@ut.ac.ir" class="auth_mail" title="E-mail the corresponding author
- 关键词：pH-switchable catalyst ; Multifunctional catalyst ; Peroxidase activity ; Chloroperoxidase activity ; Catalase activity
- 刊名：Journal of Molecular Catalysis A: Chemical
- 出版年：2016
- 出版时间：1 December 2016
- 年：2016
- 卷：424
- 期：Complete
- 页码：181-193
- 全文大小：3157 K
文摘
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Aqueous Mixture of Vesicular/Cysteine/Iron Mediates Oxidative pH-Switchable Multifunctional Catalysis.
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Designed and encapsulated in vesicular system (1:4 SDS/DTAB) in order to imitate a chloroperoxidase (CLP).
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This artificial catalyst behaved at pH 3 both as catalase and CLP, at pH 1 as peroxidase.
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Engineered two distinct vesicular cysteinate-Fe3+ binary complexes that function as a pH-switchable artificial-enzyme.
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Sulfur and ammonium moieties of Cys bind to metal-ion at pH 1 but that the ammonium-side chain is replaced by the carboxylate-group at pH 3.