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Mass Spectrometry Characteristics of Ferritin Subunits Binding to TEA and Proteomics of Hela Cells Apoptosis Exposed to TEA

Abstract

摘要 大量研究指出,铁蛋白主要生理功能是释放铁给细胞,合成含铁的酶蛋白,储存细胞中的过量铁,避免产生铁中毒现象。哺乳动物铁蛋白由H和L亚基组成,其中H亚基负责络合亚铁离子和氧化亚铁形成高铁组分,L亚基负责铁核形成与矿化。有关铁蛋白亚基类型、亚基之间的相互作用强度和执行新生理功能还存在着争议。本文以猪胰脏铁蛋白(pigpancreasferritin,PPF)为实验材料,优化铁蛋白分离技术,小批量制备高纯度的PPF。选用SDS-PAGE方法分析了PPF由H(21.0kDa),L亚基(19.0kDa)和SH(smallHsubunits)小亚基组成。选用基质辅助激光解吸电离飞行时间质谱仪(MAL...Abstract Many research studies indicate that main physiological function of ferritin is releasing iron to cell, iron-related proteins synthesis, excess iron storage within cell and avoid from iron-toxicity. Mammals’ ferritins are composed of H(heavy)and L(light)subunits. The H subunit is responsible for Fe2+ binding and oxidizes Fe2+ into Fe3+, L subunit is responsible for Fe3+-nuclei formation a...学位:理学博士院系专业:生命科学学院生物化学与生物技术系_生物化学与分子生物学学号:2172009015354

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