引用本文:
李臻, 夏春谷. 水溶性锰卟啉模拟酶体系快速混合停流谱研究[J]. 物理化学学报,
2001, 17(02): 101-106.
doi:
10.3866/PKU.WHXB20010202
Citation: Li Zhen, Xia Chun-Gu. Rapid-Mixing Stopped-Flow Spectra Studies on Water-soluble Manganese Porphyrin Enzyme-Mimic Systems[J]. Acta Physico-Chimica Sinica, 2001, 17(02): 101-106. doi: 10.3866/PKU.WHXB20010202
Citation: Li Zhen, Xia Chun-Gu. Rapid-Mixing Stopped-Flow Spectra Studies on Water-soluble Manganese Porphyrin Enzyme-Mimic Systems[J]. Acta Physico-Chimica Sinica, 2001, 17(02): 101-106. doi: 10.3866/PKU.WHXB20010202
水溶性锰卟啉模拟酶体系快速混合停流谱研究
摘要:
采用快速混合停流技术,考察了不同pH值条件下水溶性锰卟啉MnⅢ(TMPyP)与四种单氧给体mCPBA、KHSO5、NaOCl及H2O2构建的细胞色素P450模拟酶体系催化氧化活性物种的生成及催化烯烃环氧化过程.低pH值时,主要生成四价锰氧中间体2;而在高pH值时,首先生成五价锰氧中间体1,该中间体再向四价中间体2转化.
English
Rapid-Mixing Stopped-Flow Spectra Studies on Water-soluble Manganese Porphyrin Enzyme-Mimic Systems
Abstract:
The reaction of watersoluble Manganese porphyrin complex,MnⅢ(TMPyP) with a variety of oxidants(mCPBA,KHSO5,NaOCl and H2O2) under ambient conditions at different pH was investigated by stoppedflow techniques.Oxomanganese(IV) porphyrin complex intermediate (2) was the main product at lower pH.Highvalent oxomanganese(V) porphyrin (1) was fully formed and subsequently decayed to oxoMn(Ⅳ) at higher pH.It was shown that oxomanganese(V) porphyrin was the reactive complex with reducing substrates.
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