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GST protein expression- 2 bands?


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#1 batman99

batman99

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Posted 20 May 2012 - 08:25 PM

Hi, I used the pGEX-2TK to express GST protein itself as my experimental control in BL21 AI cells. After purification, both the Coomassie blue staining and western blot showed 2 bands, about 26KD and 28KD. Can anyone help me out here?
Thanks!




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