34 µm bead size for improved efficiency and resolution Fast, One step purification of GSTtagged proteins and other glutathione Strasferase or glutathionedependent proteins Mild conditions during the purification process preserves protein antigenicity and function. Glutathione Sepharose High Performance is used for the purification of GSTtagged proteins from bacterial lysates and other Stransferases or glutathionedependent proteins. GSTtagged proteins are eluted under mild, nondenaturing conditions using reduced glutathione. The purification process preserves protein antigenicity and function.