The Spin-column Membrane Protein Folding Screen Kit is specifically designed for folding membrane proteins from urea-solubilized inclusion bodies or other protein aggregates.  The kit is composed of 20 protein folding spin columns and Reagents A, B and C.  The 20 spin-columns represent 20 different conditions with various detergents and lipids that form micelles and bicelles.  The micellar and bicellar environments facilitate folding receptors, ion channels and other membrane proteins.  When the active protein is identified, preparative columns with the specific condition (the column number) are available for large-scale preparations of the folded membrane proteins.