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›› 2012, Vol. ›› Issue (6): 847-852.DOI: 10.7523/j.issn.2095-6134.2012.6.019

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Prokaryotic expression, purification, and identification of GST-β-catenin-His double labeled fusion protein

YIN Hui-Long, YUAN Li   

  1. College of Life Sciences, Graduate University, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2011-11-10 Revised:2012-01-13 Online:2012-11-15

Abstract: The cDNA sequence of β-catenin was amplified through RT-PCR with 6xHis tag added in the gene downstream, cloned into the vector pGEX-4T-1. The plasmid transformed into BL21pLysS was induced by IPTG. The induced fusion protein was purified stepwise using Glutathione Sepharose 4B and Ni columns. The final protein ran on SDS-PAGE with a specific band at the expected size of 114 kDa. Western Blotting showed that the purified protein can be recognized by the anti-β-catenin, anti-GST, and anti-His antibodies, respectively. All these results provide a basis for further study of β-catenin function.

Key words: β-catenin, purification, GST and His tags, Western Blotting

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