硫脲壳聚糖铜配合物与牛血清白蛋白的相互作用 |
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引用本文: | 李小芳,冯小强,杨声.硫脲壳聚糖铜配合物与牛血清白蛋白的相互作用[J].中兽医医药杂志,2012,31(3):17-19. |
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作者姓名: | 李小芳 冯小强 杨声 |
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作者单位: | 1. 天水师范学院生化学院,甘肃天水,741001 2. 定西师范高等专科学校 |
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基金项目: | 天水师范学院物理无机化学重点学科基金(ZD0840);天水师范学院中青年教师科研资助项目(TSA1003);天水师范“青蓝”人才工程资助项目 |
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摘 要: | 在模拟动物体生理pH条件下,采用紫外吸收和荧光光谱研究硫脲壳聚糖铜(TUCS-Cu)配合物与牛血清白蛋白(BSA)的结合反应,探讨TUCS-Cu对BSA荧光猝灭过程的猝灭机理。结果表明,TUCS-Cu和BSA结合形成复合物,导致BSA内源性荧光猝灭机理属于静态猝灭。在室温下,TUCS-Cu与BSA的结合常数KA为2.68×106 L/mol。
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关 键 词: | 硫脲壳聚糖铜 牛血清白蛋白 紫外光谱 荧光光谱 |
Interaction of thiourea-chitosan'copper complex with bovine serum albumin |
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Affiliation: | LI Xino-fang, FENG Xiao-qiang (College of Life Science and Chemistry, Tianshui Not'real University. Tianshui Gansu 741001, China) |
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Abstract: | In physiological condition, the binding reaction of thiourea-chitosan-copper (TUCS-Cu) with bovine serum albumin t BSA) was studied by uhraviolet spectrum and fluorescence spectrum. The results showed that TUCS-Cu combined with BSA to form a new comprmnd system, the quenching belonged to static fluorescence quenching. The binding constant ( K A) of TUCS-Cu with BSA at room temperature was 2.68×10^6 1· mol^-1. |
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Keywords: | thiourea-chitosan-eopper complex bovine serum albumin : ultraviolet speelrum fluorescence spectum |
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