食品科学 ›› 2006, Vol. 27 ›› Issue (12): 541-544.

• 工艺技术 • 上一篇    下一篇

牛脾脏中μ-钙激活酶的分离纯化方法研究

黄明,藏大存,徐幸莲,赵莲,周光宏   

  1. 南京农业大学农业部农畜产品加工与质量控制重点开放实验室;
  • 出版日期:2006-12-15 发布日期:2011-11-23

Study on Methodology of Purification of μ-Calpain from Cattle Spleen

 HUANG  Ming, CANG  Da-Cun, XU  Xing-Lian, ZHAO  Lian, ZHOU  Guang-Hong   

  1. Key Laboratory of Agricultural and Animal Products Processing and Quality Control, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
  • Online:2006-12-15 Published:2011-11-23

摘要: 本试验旨在通过采用多种生物学分离手段和多个分离步骤从牛脾脏中分离纯化μ-钙激活酶。对宰后30min黄牛脾脏通过匀浆后利用超高速冷冻离心、离子交换层析、疏水层析、分子筛等技术,从中分离纯化出了μ-钙激活酶,最后得到的μ-钙激活酶的比活力为38.4U/mg。并对分离纯化过程中各主要步骤μ-钙激活酶的总活性、比活力等参数变化进行了测定,同时采用不连续十二烷基磺酸钠聚丙烯酰胺凝胶电泳(SDS-PAGE)和活性电泳(caseinzymography)对纯化过程中的样品进行了鉴定。

关键词: &mu, -钙激活酶, 纯化, 柱层析, 活性电泳, 变性不连续电泳

Abstract: The objective of this study is to purify μ-Calpain from cattle spleen by applying a variety of biological methods and different procedures. Fresh yellow cattle spleen (within 30min postmortem) was sampled and treated with procedures such as homogenization, ionic exchange, hydrophobic chromatography, molecular sieve exclusion etc. In the last step, the specific activity of resultant μ-Calpain was 38.4U/mg. Meanwhile, the total activity and specific activity of μ-Calpain and other parameters related at different major purification procedures were detected and verified by way of SDS-PAGE and casein zymography.

Key words: &mu, -Calpain; purification; column chromatography; casein-zymography; SDS-PAGE;