CAJ | 학술논문

为了构建高效的离子交换/反相二维液相色谱(IEC/RPLC)分离平台系统,提高复杂蛋白质样品的分离效率,对色谱柱进行了评价与筛选.通过对实际人肝蛋白质样品的分离效果的比较,选择确定了TSKgel DEAE-5PW弱阴离子交换色谱柱(WAX)作为第一维色谱分离柱;考察了同一规格的10支代表性反相色谱柱(250 mm×4.6 mm,5 μm,30 nm,C4、C8或C18),通过评价其对尿嘧啶、硝基苯、萘和芴的分离性能以及对3种标准蛋白质样品的非特异性吸附、对人肝蛋白质样品的WAX馏分的分离效果,最终确定以Jupiter 300 C4反相色谱柱作为第二维色谱分离柱.对两维色谱柱的选择优化为蛋白质高效分离二维液相色谱平台的搭建提供了可靠基础.
위료구건고효적리자교환/반상이유액상색보(IEC/RPLC)분리평태계통,제고복잡단백질양품적분리효솔,대색보주진행료평개여사선.통과대실제인간단백질양품적분리효과적비교,선택학정료TSKgel DEAE-5PW약음리자교환색보주(WAX)작위제일유색보분리주;고찰료동일규격적10지대표성반상색보주(250 mm×4.6 mm,5 μm,30 nm,C4、C8혹C18),통과평개기대뇨밀정、초기분、내화물적분리성능이급대3충표준단백질양품적비특이성흡부、대인간단백질양품적WAX류분적분리효과,최종학정이Jupiter 300 C4반상색보주작위제이유색보분리주.대량유색보주적선택우화위단백질고효분리이유액상색보평태적탑건제공료가고기출.
In order to optimize two-dimensional liquid chromatographic (2D-LC) columns for highly efficient separation of proteins,several liquid chromatographic columns were investigated and evaluated.Weak anion-exchange (WAX) column was chosen as the first dimension because of its extensive protein separation power.By comparison of different WAX chromatographic columns for human liver protein separation,TSKgel DEAE-5PW column was selected as the first dimension of a 2D-LC system.For the second dimension,ten typical reversed-phase (RP) LC columns (250 mm×4.6 mm,5 μm,30 nm) were investigated and evaluated.Their silica based RP stationary phases were butyl (C4),octyl (C8) or octadecyl (C18).To evaluate the retention behavior and non-specific protein adsorption ability of these ten columns,four neutral compounds (uracil,nitrobenzene,naphthalene and fluorene) and three standard proteins (cytochrome C,myoglobin and albumin from chicken egg white) were adopted and separated by RPLC.Meantime,WAX fractions were used to investigate the separation ability of different alkyl-bonded silica stationary phase columns for complex protein samples.By comparison of column separation efficiency,adsorption of intact proteins and sample analysis,Jupiter 300 C4 column was finally employed for its excellent separation ability.Optimization of WAX and RPLC columns offers reliable foundation for the construction of 2D-LC protein separation systems.