Affinity purification of recombinant Ov-AEP-1 expressed in Escherichia coli as assessed by Coomassie Blue stained SDS-PAGE gel. Lane 1, uninduced E. coli cell pellet; lane 2, IPTG-induced cell pellet; lane 3, supernatant from pellet solubilized in binding buffer; lane 4, supernatant from pellet solubilized in 8 M urea in binding buffer; lane 5, affinity-purified Ov-AEP-1 in 6 M urea; lane 6, equal loading of refolded purified recombinant Ov-AEP-1 in PBS buffer; lane 7, immunoblot of recombinant Ov-AEP-1 protein probed with anti-hexaHis-tag antibody.