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
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.
陈婷婷1，黄晓华1，杜江燕1，冯玉英1，刘长鹏2，邢 巍2，陆天虹1, 2* . 微过氧化物酶-8的聚集程度对其与La3+相互作用的影响[J]. 光谱学与光谱分析, 2005, 25(08): 1270-1273.
CHEN Ting-ting1, HUANG Xiao-hua1, DU Jiang-yan1, FENG Yu-ying1, LIU Chang-peng2, XING Wei1, LU Tian-hong1, 2* . Effect of Aggregation Extent of Microperoxidase-8 on Its Interaction with La3+ . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(08): 1270-1273.
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