Saccharomyces cerevisiae expression vectors with thrombin-cleavable N- and C-terminal 6x(His) tags

General-purpose yeast expression vectors for convenient cloning and production of proteins with N- or C-terminal His6 tags that can be efficiently removed with thrombin have been developed. To the parental yeast-E. coli shuttle vectors that have convenient copper-inducible expression, two selectable markers and LEU2d vector amplification, this development adds substantial versatility to product recovery.