Hi,
Can I use 50mM sodium phosphate buffer pH 8 for purification of a GST tagged protein expressed in E.coli? Earlier I have done the purification in 50mM Tris buffer pH 8 but the protein is slightly unstable in tris buffer so i want to check its stability in Sodium phosphate buffer. If so can i use PBS to wash the resin bound protein?
I need this protein for Circular dichorism.
How to reduce impurities in the purified GST tagged protein?