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The role of Zn in the interplay among Langmuir-Blodgett multilayer and myelin basic protein: a quantitative analysis of XANES spectra
Benfatto, M; Della Longa, S; Qin, Y; Li, Q; Pan, G; Wu, Z; Morante, S; Wu ZY(吴自玉)
2004
发表期刊BIOPHYSICAL CHEMISTRY
卷号110期号:1-2页码:#REF!
通讯作者Morante, S (reprint author), Univ Roma Tor Vergata, Dept Phys, Via Ric Sci 1, I-00133 Rome, Italy.
文章类型Article
摘要We have performed a quantitative analysis of the X-ray absorption near-edge structure (XANES) spectra at the Zinc K-edge of systems formed by phospholipid Langmuir-Blodgett multilayers (LBMLs) in the presence and in the absence of myelin basic protein (MBP) and in two hydration conditions. These spectra have been analysed by a new procedure called Minuit XANes (MXAN) which is able to perform a quantitative fit of XANES data in terms of structural parameters. By this method, we have been able to correlate the relevant differences between the spectra observed in the XANES range with the coordination changes due to reduction of the space around the Zinc when the level of hydration is lowered and/or the myelin basic protein is added. These spectral differences are peculiar of the XANES energy range, and are not present in the extended X-ray absorption fine structure (EXAFS) energy range where the analysis was previously performed. With this investigation, we give an unambiguous answer to the question of the role of zinc in such complexes by showing that the metal interacts with both the phospholipid heads of the substrate and the myelin basic protein. (C) 2004 Elsevier B.V All rights reserved.
关键词Langmuir-Blodgett multilayers myelin basic protein zinc X-ray absorption spectroscopy near-edge structure
学科领域Biochemistry & Molecular Biology; Biophysics; Chemistry
DOI10.1016/j.bpc.2004.02.003
收录类别SCI
WOS类目Biochemistry & Molecular Biology ; Biophysics ; Chemistry, Physical
WOS记录号WOS:000222735700016
引用统计
被引频次:20[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226824
专题多学科研究中心
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GB/T 7714
Benfatto, M,Della Longa, S,Qin, Y,et al. The role of Zn in the interplay among Langmuir-Blodgett multilayer and myelin basic protein: a quantitative analysis of XANES spectra[J]. BIOPHYSICAL CHEMISTRY,2004,110(1-2):#REF!.
APA Benfatto, M.,Della Longa, S.,Qin, Y.,Li, Q.,Pan, G.,...&吴自玉.(2004).The role of Zn in the interplay among Langmuir-Blodgett multilayer and myelin basic protein: a quantitative analysis of XANES spectra.BIOPHYSICAL CHEMISTRY,110(1-2),#REF!.
MLA Benfatto, M,et al."The role of Zn in the interplay among Langmuir-Blodgett multilayer and myelin basic protein: a quantitative analysis of XANES spectra".BIOPHYSICAL CHEMISTRY 110.1-2(2004):#REF!.
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