柱状假丝酵母脂肪酶同工酶的一种高效液相色谱分离新方法 |
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引用本文: | 胡霄雪,辛嘉英,徐毅,崔俊儒,李树本,夏春谷. 柱状假丝酵母脂肪酶同工酶的一种高效液相色谱分离新方法[J]. 分析化学, 2002, 30(8): 981-983 |
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作者姓名: | 胡霄雪 辛嘉英 徐毅 崔俊儒 李树本 夏春谷 |
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作者单位: | 中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室,兰州,730000;中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室,兰州,730000;中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室,兰州,730000;中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室,兰州,730000;中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室,兰州,730000;中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室,兰州,730000 |
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基金项目: | 国家自然科学基金重点资助项目 ( 2 99330 4 0 ) |
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摘 要: | 建立一种“疏水界面亲和色谱”分离柱状假丝酵母脂肪酶同工酶的高效液相色谱新方法。将商品化的CRL经离子交换色谱分离为两个同工酶组分 (CRLA和CRLB) ,在极低离子强度下 ,根据同工酶活性中心周围处于“开放”构象的疏水腔具亲疏水界面的特性 ,用疏水界面亲和色谱在NucleosilC4 (10 μ ,3 0 0 ,2 5 0× 4.60mm)柱上将CRLA和CRLB都分离为 4种同工酶组分。疏水界面亲和色谱非常适用于分离这种结构差异轻微的同工酶组分
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关 键 词: | 疏水界面亲和色谱 高效液相色谱 分离 柱状假丝酵母脂肪酶同工酶 |
Separation and Characterization of Candida Rugosa Lipase Isoenzymes by High Performance Liquid Chromatograpy |
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Abstract: | A high performance liquid chromatographic method, hydrophobic interfacial affinity chromatography, to separate commercial Candida rugosa lipase has been established. Commercial Candida rugosa lipase has been separated into two distinct fractions (CRLA and CRLB) by anion exchange chromatography. Based on the mechanism of lipase adsorption on solid hydrophobic interfaces at low ionic strength, The hydrophobic interfacial affinity chromatography was employed for the fine separation of CRL isoenzymes. At low ionic strength, both CRLA and CRLB can be separated into four isoenzymes on the column of Nucleosil C 4. They have different hydrophobicity and UV spectra, suggest that the open extent of large hydrophobic pocket of the four isoenzymes may be different. This method seems to be very suitable for meticulous separation of such slightly different isoenzymes fractions. |
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Keywords: | Hydrophobic interfacial affinity chromatography high performance liquid chromatography Candida rugosa lipase isoenzymes separation |
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