Fast Forward to Tag-free Protein

Bio-Rad Laboratories Inc, recently announced the new Bio-Rad Profinity eXactâ„¢ Fusion-Tag System, an integrated set of products that address bottlenecks in the tag-removal process involved with the purification of affinity-tagged proteins. The result of the entire process is true, single-step purification without the difficulty and expense of cleavage enzymes, incubation times, or removal of reagents.
The Profinity eXact fusion-tag system utilises an immobilised, engineered Subtilisin protease to carry out affinity binding and tag cleavage, which significantly shortens the purification process. As the ligand, the protease is not only involved with the binding and recognition of the tag, but upon application of the elution buffer, it also serves to quickly and precisely cleave the tag from the fusion protein directly after the cleavage recognition sequence. This delivers a native, tag-free protein in a single step.
The key benefits of the Profinity eXact system include purification and processing of fusion-tagged proteins in a single step, on-column cleavage in as little as 30 minutes, elimination of a protease addition
step, and precise cleavage at the N-terminus to generate a native protein sequence.