高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (5): 818.

• 研究论文 • 上一篇    下一篇

肌钙蛋白Ⅰ提取纯化新方法的研究

马学华, 刘忠英, 胡秀丽, 石毅, 姜熙罗, 安汝国   

  1. 吉林大学生物工程研究所, 长春 130021
  • 收稿日期:2001-01-08 出版日期:2002-05-24 发布日期:2002-05-24
  • 通讯作者: 刘忠英(1964年出生),女,博士研究生,副教授,从事分析化学和生化分析研究.
  • 基金资助:

    吉林省自然科学基金(批准号:990324)资助.

Studies on a New Method of Extraction and Purification of Troponin Ⅰ

MA Xue-Hua, LIU Zhong-Ying, HU Xiu-Li, SHI Yi, JIANG Xi-Luo, AN Ru-Guo   

  1. Institute of Biological Engineering, Jilin University, Changchun 130021, China
  • Received:2001-01-08 Online:2002-05-24 Published:2002-05-24

摘要: 兔骨骼肌匀浆液经离心后,依次经DEAE-SephadexA25,SephadexG75及ButylSepharoseF.F柱层析,得到了兔骨骼肌肌钙蛋白C(sTnC)纯品.将其与Sepharose4B凝胶偶联,制成sTnC亲和层析凝胶.人心肌或骨骼肌经匀浆、离心后上sTnC亲和层析柱,一步分离可获得人心肌肌钙蛋白Ⅰ(cTnI)或人骨骼肌肌钙蛋白Ⅰ(sTnI)纯品.HPLC分析出现单一峰.SDS-PAGE分析得到一条电泳带,其分子量分别为25000及21000.用20gsTnC亲和凝胶处理40g人心肌时,相当于每100g心肌可得到82.6mgcTnI.

关键词: 肌钙蛋白C, 心肌肌钙蛋白I, 骨骼肌肌钙蛋白I, 纯化

Abstract: Rabbit skeletal muscle was homogenized and centrifuged, then applied to DEAE-Sephadex A25, Sephadex G75 and Butyl Sepharose columns in turn.Finally, the purified sTnCwas obtained.The affinity chromatography gel was prepared by binding the purified sTnConto the CNBr-act Sepharose 4B.Troponin Iwas isolated directly from whole skeletal and cardial muscle by using the affinity chromatography gel.Both the results of HPLCand SDS-PAGEshow a single band.The molecular weights of the purified sTn Iand cTn Iwere 21000 and 25000, respectively.The yield of sTnCwas 82.6 mg/100 g cardiac tissue, which was higher than that obtained by using the previous method.In this work, 91.6 mg purified cTn Iwere obtained.

Key words: sTnC, sTn I, cTn I, Purification

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