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Citation: LI Mei-Lin, CHEN Ting-Ting, HUANG Xiao-Hua, FENG Yu-Ying, XING Wei, LU Tian-Hong. Interaction Mechanism between Microperoxidase-11 and Yb³⁺ via UV-Vis Absorption Spectroscopy[J]. Chinese Journal of Applied Chemistry, ;2006, 23(2): 157-160. shu

Interaction Mechanism between Microperoxidase-11 and Yb³⁺ via UV-Vis Absorption Spectroscopy

1.
a Environment Friendship Laboratory, College of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097;
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b College of Chemistry and Chemical Engineering, Nantong University, Nantong;
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c Changchun institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Corresponding author: LU Tian-Hong,
Received Date: 28 March 2005
Available Online: 30 May 2005
Fund Project: 国家自然科学基金(20471030) (20471030)国家计委稀土专项基金(GJX01100626) (GJX01100626)

The interaction mechanism between microperoxidase-11 and Yb³⁺ was studied by means of UV-Vis absorption spectroscopic technique.It was found that Yb³⁺ could bond with the carbonyl oxygen of the metacetonic acid group in the heme group of the MP-11 molecule.One Yb³⁺ ion links with one carbonyl oxygen of the metacetonic acid group.This kind of interaction results in the increase in the non-planarity of the porphyrin group in the heme group and the decrease in the energy for the π-π^* transition.However,the probability of the π-π^* transition is decreased.Yb³⁺ could not link with the carbonyl oxygen of the amido group in the peptide of the MP-11 molecule because the carbonyl oxygen of the amido group in the peptide is embedded in the hydrophobic environment in the peptide.
- Microperoxidase-11,
- UV-vis absorption spectroscopy,
- peptide
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Interaction Mechanism between Microperoxidase-11 and Yb3+ via UV-Vis Absorption Spectroscopy

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通讯作者: 陈斌, bchen63@163.com

Interaction Mechanism between Microperoxidase-11 and Yb³⁺ via UV-Vis Absorption Spectroscopy