| 光谱学与光谱分析 |
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| Effect of Aggregation Extent of Microperoxidase-8 on Its Interaction with La3+ |
| CHEN Ting-ting1, HUANG Xiao-hua1, DU Jiang-yan1, FENG Yu-ying1, LIU Chang-peng2, XING Wei1, LU Tian-hong1, 2* |
1.College of Chemistry and Environment Science, Nanjing Normal University，Nanjing 210097, China
2.Changchun Institute of Applied Chemistry, Chinese Academy of Sciences，Changchun 130022, China |
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Abstract The results of UV-Vis absorption spectroscopic investigation indicated that La3+ coordinates strongly with carboxylate oxygen of two propionic acid groups of the heme group in an MP-8 molecule, leading to an increase in the non-planarity of the porphyrin ring of the heme group.The increasing extent in the non-planarity of the porphyrin ring of the heme group due to the interaction of La3+ and MP-8 molecule would be significantly decreased because NaCl could increase the aggregation extent of MP-8 molecules.Although methanol can reduce the aggregation extent of MP-8 molecules, it has little influence on the increasing extent in the non-planarity of the porphyrin ring of the heme group due to the interaction of La3+ and MP-8 molecule.
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Received: 2004-03-05
Accepted: 2004-06-26
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Corresponding Authors:
LU Tian-hong
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| Cite this article: |
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CHEN Ting-ting,HUANG Xiao-hua,DU Jiang-yan, et al. Effect of Aggregation Extent of Microperoxidase-8 on Its Interaction with La3+ [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(08): 1270-1273.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2005/V25/I08/1270 |
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