GST Pull Down Assay to Study PIF4 Binding In Vitro Springer Nature Link Glutathione Sepharose and prepacked columns Role of Human Glutathione S Transferases in the Inactivation of Reactive Metabolites of Clozapine Chemical Research in Toxicology GST SpinTrap Purification Module From GE Healthcare Biocompare Product Review Affinity chromatography columns, HiTrap protein G HP VWR, part of Avantor Human viperin catalyzes the modification of GPP and FPP potentially affecting cholesterol synthesis Mikulecky 2018 FEBS Letters Wiley Online Library