首页> 外文期刊>RSC Advances >The interaction of (7-chloroquinolin-4-yl)-(2,5-dimethoxyphenyl)-amine hydrochloride dihydrate with serum albumin proteins, inputs from spectroscopic, molecular docking and X-ray diffraction studies
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The interaction of (7-chloroquinolin-4-yl)-(2,5-dimethoxyphenyl)-amine hydrochloride dihydrate with serum albumin proteins, inputs from spectroscopic, molecular docking and X-ray diffraction studies

机译:(7-氯喹啉-4-基) - (2,5-二甲氧基苯基)-amine盐酸二水合物的相互作用与血清白蛋白蛋白,光谱,分子对接和X射线衍射研究的输入

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摘要

The interaction of (7-chloroquinolin-4-yl)-(2,5-dimethoxyphenyl)-amine hydrochloride dihydrate (CQDPA), an amodiaquine analog and a combination partner in antimalarial therapy, with serum albumin proteins (BSA and HSA) was assessed using spectroscopic techniques. Fluorescence studies at three different temperatures confirmed the binding of CQDPA to the active sites of the proteins. The thermodynamic properties such as the enthalpy change (Delta H-0), Gibbs free energy change (Delta G(0)) and entropy change (Delta S-0) suggest that the CQDPA molecule binds to site I (subdomain II) of both BSA and HSA through hydrophobic interactions. Based on Forster's theory of non-radiation energy transfer, the average binding distance r values between the donor (BSA or HSA) and acceptor (CQDPA) were found to be 2.63 and 2.77 for BSA and HSA respectively. A CD study revealed that the alpha-helical content remained intact in both BSA and HSA on the addition of the amodiaquine analogue but with decreased intensity. The computational analysis and molecular docking of CQDPA with BSA & HSA also corroborated the experimental results.
机译:评估(7-氯喹啉-4-基) - (2,5-二甲氧基苯基) - (2,5-二甲氧基苯基) - 盐酸二水合物(CQDPA),血清白蛋白(BSA和HSA)中的盐酸二水合物(CQDPA),Amodiaquine类似物和组合伴侣的相互作用使用光谱技术。三种不同温度的荧光研究证实了CQDPA对蛋白质的活性位点的结合。诸如焓变化(Delta H-0)的热力学性质(Delta H-0)(Delta G(0))和熵变(Delta S-0)表明CQDPA分子与两者的位点I(亚域II)结合BSA和HSA通过疏水性相互作用。基于Forster的非辐射能量转移理论,分别发现供体(BSA或HSA)和受体(CQDPA)之间的平均结合距离R值分别为BSA和HSA的2.63和2.77。 CD研究表明,BSA和HSA中的α-螺旋含量在添加了积极的类似物,但强度降低。 CQDPA与BSA&HSA的计算分析和分子对接也得到了实验结果。

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  • 来源
    《RSC Advances》 |2015年第104期|共8页
  • 作者单位

    Univ Delhi Dept Chem Biol Chem Lab Delhi 110007 India;

    Univ Delhi Dept Chem Biol Chem Lab Delhi 110007 India;

    Univ Delhi Dept Chem Biol Chem Lab Delhi 110007 India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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