H-1-NMR STUDIES ON LANTHANIDES SUBSTITUTED TRANSFERRINS

被引:8
|
作者
MESSORI, L
PICCIOLI, M
机构
[1] Department of Chemistry, University of Florence, Florence
关键词
D O I
10.1016/0162-0134(91)84004-S
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The binding of lanthanide(III) ions to human serum apotransferrin has been investigated through H-1 NMR spectroscopy. Several well resolved isotropically shifted signals have been observed between 100/-100 ppm for the Tm, Tb, Yb, and Dy derivatives. Significant spectroscopic inequivalence of the two metal binding sites has been revealed. Differences in the behavior of signals assigned to the C- and to the N-terminal site have been observed upon titration with sodium perchlorate.
引用
收藏
页码:185 / 190
页数:6
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