GlutathioneS-transferaseisa26kDproteinfromSchistosomajaponicum.GSTisutilizedasafusionproteininproteinexpressionfromarangeofprokaryoticexpressionvectors,includingthepGEXfamilyofvectors.AntibodiesagainstGSTwilldetecttheexpressedGSTproteinoraGST-fusionprotein,andcanbeutilizedforimmuno-purificationofGST-fusionproteins.