Figure 1From: Biochemical and molecular characterisation of Tetrahymena thermophila extracellular cysteine proteasesPurification scheme DCG-04. The structure of DCG-04 is shown in the upper part. The E64-component binds covalently to active cysteine proteases. Subsequently protease/inhibitor complex is immobilized by a streptavidin bead via the biotin tag. (lower part).Back to article page