MCE Glutathione Agarose, a 4% highly cross-linked agarose reagent, effectively purifies high levels of overexpressed GST-tagged fusion proteins at a variety of scales. MCE Glutathione Agarose has high protein-binding capacity and stability, and is compatible with a wide range of chemicals and pH values, making it ideal for high performance purification of GST-tagged fusion proteins expressed in E. coli, yeast, insect and mammalian expression systems.