Dear ALL;

      As an alternative strategy to avoid endotoxin, I plan to express the 
protein in mammalian cells. 

      As suggested by others, the typical vector is pcDNA3.1(+).  Does anyone 
have comments on this vector or recommend some other powerful vectors?

     I am new to mammalian expression. I designed a Kozak sequence followed by 
a BSA signal peptide in order to clone the target into pcDNA3.1(+).

      Is it right?  Tentative Kozak sequence:  
GAGCTCGGATCCGCCACCATGAAGTGGGTAACCTTTCTCCTCCTCCTCTTCATCTCCGGTTCTGCCTTTTCT

       Thanks a lot,

Jerry
                                          

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