SUMO Protease, also known as Ulp, is a highly active cysteine protease that recognizes the tertiary structure of the SUMO protein, thus the SUMO protein can be cut down from the recombinant fusion protein efficiently and specifically. SUMO Protease maintains a high activity in a wide range of reaction systems such as temperature (4-30 ° C), pH (5.5-9.5), and so on. The SUMO Protease is a recombinant protease that has been purified from E. coli. SUMO Protease has a His-tag which can remove by affinity chromatography.