【摘 要】
：
Interaction between rare earth ion praseodymium (Pr(Ⅲ)) and MP11 with/without hydrogen ion (H+) in different media( aqueous, phosphate buffer, physiological co
【机 构】
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Department of Chemistry,College of Chemistry and Environment Science,School of Biotechnology
论文部分内容阅读
Interaction between rare earth ion praseodymium (Pr(Ⅲ)) and MP11 with/without hydrogen ion (H+) in different media( aqueous, phosphate buffer, physiological condition) were studied by UV-Vis spectroscopy. All the results indicate that Pr(Ⅲ) interacts with MP11, increasing the non-planarity of porphyrin periphery, leading MP11 to form two conformations when titrated by Pr(Ⅲ). Excessive Pr(Ⅲ) acts as a contaminant in living organism. H+ and Pr(Ⅲ) have antagonistic effect on MP11, suggesting that at suitable concentration under physiological conditions, Pr(Ⅲ) can be used as biomodulator in protecting plants from acid rain stress or in rehabilitating the harm.
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