This C-terminal fusion vector is designed for the in-frame insertion of a target gene into a polylinker upstream of an intein tag (the Sce VMA intein/chitin binding domain, 55 kDa). This results in the fusion of the C-terminus of the target protein to the N-terminus of the intein tag. Thiol-induced self-cleavage of the intein releases the target protein from the chitin-bound intein tag, resulting in a single column purification of the target protein.