GST tags and protease can be removed in a single step while fusion proteins are still bound to Glutathione Sepharose 4B, Glutathione Sepharose High Performance, or Glutathione Sepharose 4 Fast Flow affinity resin. Another option is to elute the GST-tagged protein using reduced glutathione, cleave, then pass the sample over the same resin to remove the protease and tags. pGEX-6P vectors pGEX-6P-1, pGEX-6P-2, and pGEX-6P-3 encode the recognition sequence for this 3C protease.
