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产单核细胞李斯特菌溶血素的纯化 被引量:11

Purification of listeriolysin O from L.monocytogenes
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摘要 本文旨在探讨产单核细胞李斯特菌溶血素(LLO)的纯化方法。将产单核细胞李斯特菌(LM)接种于BHI液体培养基中培养,得到含LLO的培养液上清(LLO1),再经70%饱和硫酸铵沉淀、透析,得到溶血素粗提物(LLO2),LLO2经凝胶过滤层析,聚乙二醇浓缩,得到活性峰收集液(LLO3)。通过以上三步的纯化,溶血素的比活提高160倍,纯化蛋白在SDS-PAGE中呈现一条带,达电泳级纯度。 The Listeriolysin O (LLO) of L.monocytogenes, LLO was purified from the culture supematant in three steps, including precipitation with 70 % (NH4)2SO4, dialysis and Sephadex G-100 gel filtration chromatograph. SDS-PAGE showed that the purified LLO appeared as a single band with a molecular mass of 60 ku. The purified protein showed an increased LLO activity up to 160 fold,
出处 《中国预防兽医学报》 CAS CSCD 北大核心 2008年第8期605-607,共3页 Chinese Journal of Preventive Veterinary Medicine
基金 北京市自然科学基金A类重点项目(6061001) 北京市教委人才强教“学术创新团队”中药方剂研究(5090245)
关键词 产单核细胞李斯特菌 溶血素 纯化 L.monocytogenes listeriolysin O (LLO) purification
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参考文献8

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