Biotechnology Bulletin ›› 2016, Vol. 32 ›› Issue (7): 59-65.doi: 10.13560/j.cnki.biotech.bull.1985.2016.07.009

• Orignal Article • Previous Articles     Next Articles

Optimization of the Purification Method for Transmembrane Protein AgrCTM6-7C

WANG Lu-lu1, 2, QUAN Chun-shan2, XU Yong-bin2, WANG Guan-tian2, LIU Shuang2, CHEN Ying2   

  1. 1. School of Biological Engineering,Dalian Polytechnic University,Dalian 116000;
    2. Key Laboratory of Biotechnology and Resource Utilization,State Ethnic Affairs Commission and Ministry of Education,Department of Life Science,Dalian Nationalities University,Dalian 116605
  • Received:2015-10-30 Online:2016-07-25 Published:2016-07-25

Abstract: The core objective of this paper is to obtain the protein of AgrCTM6-7C with high purity by optimizing the purification processes,and provide the materials for further research. We investigated the influence of imidazole concentration in buffer used in the metal ion affinity chromatography and buffer with different pH used in the ion exchange chromatography on the purification of AgrCTM6-7C. Moreover,we discussed the effects of β-Mercaptoethanol on protein aggregation and kinase activity of AgrCTM6-7C. The optimized purification method resulted in the obvious increase on the yield and purity of AgrCTM6-7C,producing 15 mg with about 98% purity from one-liter culture medium.

Key words: Staphylococcus aureus, AgrCTM6-7C, purification