节点文献

人TLR-2胞外肽段的分段表达及其活性鉴定

Prokaryotic expression and binding activity of different extracellular fragments of human TLR-2

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 刘艳君罗冰赵文忠朱平富宁

【Author】 LIU Yan-jun~(1),LUO Bing~(1),ZHAO Wen-zhong~(2),ZHU Ping~(1),FU Ning~(1)(1.Department of Immunology,Southern Medical University,Guangzhou 510515,China;2.Department of Microbiology,Medical School of Sun Yat-sen University,Guangzhou 510080,China)

【机构】 南方医科大学免疫学教研室中山大学医学院微生物学教研室南方医科大学免疫学教研室 广州510515广州510515广州510080

【摘要】 为深入研究TLR-2胞外肽段不同区域在配基识别过程中的功能,对TLR-2a(7M-225E)、TLR-2b(185L-392L)、TLR-2c(436E-595C)三个小片段进行克隆及原核表达,其中TLR-2a和TLR-2c得到成功克隆和表达,活性鉴定结果显示TLR-2a与商品抗TLR-2(179L-204I)多抗和抗His单抗反应良好,TLR-2c可以与抗His单抗反应,在配基结合实验中TLR-2a和TLR-2c都可与PGN和LTA结合,提示TLR-2对配基的识别为构像识别。

【Abstract】 In order to investigate the role of different extracellular fragments of TLR-2 in ligand recognition,three short fragments named as TLR-2a(7M-225E),TLR-2b(185L-392L),and TLR-2c(436E-595C) were cloned and expressed in prokaryotic expression system.Recombinant proteins TLR-2a/His and TLR-2c/His were successfully purified from inclusion body.TLR-2a could bind with polyclonal antibody(TLR-2 against 179L-204I,Ab-1) and anti-His antibody,while TLR-2c could react with antiHis antibody only.These results of ligand-binding assay indicate that both TLR-2a and TLR-2c can bind with PGN and LTA which are known as the important ligands from bacteria to TLR-2.

【基金】 国家自然科学基金资助项目(30400404);广东省自然科学基金资助项目(020017)
  • 【文献出处】 现代免疫学 ,Current Immunology , 编辑部邮箱 ,2006年04期
  • 【分类号】Q786
  • 【被引频次】1
  • 【下载频次】120
节点文献中: