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首页> 外文期刊>International Journal of Biological Macromolecules: Structure, Function and Interactions >Biological assays of BF2-naphthyridine compounds: Tyrosinase and acetylcholinesterase activity, CT-DNA and HSA binding property evaluations
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Biological assays of BF2-naphthyridine compounds: Tyrosinase and acetylcholinesterase activity, CT-DNA and HSA binding property evaluations

机译:BF2-萘吡啶化合物的生物学测定:酪氨酸酶和乙酰胆碱酯酶活性,CT-DNA和HSA结合性评估

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The present work reports the biological assays between synthetic BF2-naphtyridine complexes and four proteins: human serum albumin (HSA). calf-thymus DNA (CT-DNA), tyrosinase and acetylcholinesterase enzymes via spectroscopic analysis at physiological conditions, combined with molecular docking simulations. The BF2-complexes presented spontaneous and moderate binding ability to HSA through the ground-state association (static fluorescence quenching mechanism). The main binding site is Sudlow's site I (subdomain IIA) and the binding does not perturb significantly both secondary and surface structure of HSA. Despite BF2-complexes showed good binding ability with HSA, these compounds presented weak intercalative ability with CT-DNA (the most conventional and simple model to preliminary studies), except in the case of 1 h, which suggested that the presence of electronic donor groups in both aromatic ring moieties of BF2-complex structure can increase the intercalative ability for DNA strands. Competitive binding displacement assays in the presence of methyl green and molecular docking calculations indicated that the studied compounds interact preferentially in the major groove of DNA In addition, the assayed compounds presented the ability to activate or inhibit both tyrosinase (the decontrolled activity can induce melanoma carcinoma) or AChE (involved in reactions related to the function of neurotransmitters) enzymes. (C) 2020 Published by Elsevier B.V.
机译:本作者报告了合成BF2-基吡啶络合物和四种蛋白质:人血清白蛋白(HSA)之间的生物学测定。 CALF-THYMUS DNA(CT-DNA),酪氨酸酶和乙酰胆碱酯酶酶通过光谱分析在生理条件下进行,结合分子对接模拟。通过地状态关联(静态荧光猝灭机构),BF2复合物向HSA呈现自发和中等的结合能力。主要绑定站点是Sudlow的Site I(子域IIA),并且绑定不会扰乱HSA的二级和表面结构。尽管BF2复合物显示出良好的HSA结合能力,但这些化合物呈现弱的间隔性能力,与CT-DNA(最常规和最简单的初步研究的模型)呈现弱,除了1小时之外,这表明电子捐助团的存在在BF2复合结构的两个芳环部分中,可以增加DNA链的插入能力。竞争性结合位移测定在甲基绿色和分子对接计算的存在下表明,所研究的化合物优先在DNA的主槽中相互作用,测定化合物呈现激活或抑制酪氨酸酶(解除控制的活性可以诱导黑色素瘤癌的能力)或疼痛(参与与神经递质的功能有关的反应)酶。 (c)2020由elsevier b.v发布。

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