title: Purification of a putative lipoprotein receptor from Schistosoma japonicum adult worms.
abstract: A 43-kDa putative lipoprotein receptor from Schistosoma japonicum adult worms (Sj43) has been purified by reverse-phase high-performance liquid chromatography (HPLC) using a Waters Delta-pak C4 300 A 15 mu 3.9 mm x 300 mm column. A linear acetonitrile gradient from 10-95%, spanning 40 min and at a flow rate of 0.9 ml min-1 was employed for the elution of bound material. Sj43 had a retention time of approximately 13 min on the column, whereas other main components from the parasite extract had a much longer retention time. Sj43 purified as a doublet which could be cleaved with Staphylococcus aureus V8 protease but was unaffected by treatment with a mixture of endoglycosidase F and glycopeptidase F. Human low-density lipoprotein exhibited typical saturation kinetics on the HPLC-purified Sj43 with a calculated stoichiometry of 2 mol LDL mol-1 of the putative receptor. No evidence of high-density lipoprotein (HDL3) saturation was observed on purified Sj43, this being of some interest since it parallels observations made with mammalian HDL3-binding proteins.
authors.affiliation: Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia.
authors.forename: M V
authors.initials: MV
authors.lastname: Rogers
authors.forename: D
authors.initials: D
authors.lastname: Quilici
authors.forename: G F
authors.initials: GF
authors.lastname: Mitchell
authors.forename: N H
authors.initials: NH
authors.lastname: Fidge
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D003902:Detergents; D004591:Electrophoresis, Polyacrylamide Gel; D007700:Kinetics; D008074:Lipoproteins / Q000378:metabolism*; D008075:Lipoproteins, HDL / Q000378:metabolism; D008077:Lipoproteins, LDL / Q000378:metabolism; D017830:Octoxynol; D011092:Polyethylene Glycols; D011956:Receptors, Cell Surface / Q000302:isolation & purification* / Q000378:metabolism; D018110:Receptors, Lipoprotein; D012549:Schistosoma japonicum / Q000032:analysis*
chemical_list: D003902:Detergents; D008074:Lipoproteins; D008075:Lipoproteins, HDL; D008077:Lipoproteins, LDL; D011956:Receptors, Cell Surface; D018110:Receptors, Lipoprotein; D011092:Polyethylene Glycols; D017830:Octoxynol; C010615:Nonidet P-40