title: Purification and some properties of membrane-associated phospholipase A2 of human spleen.
abstract: Membrane-associated phospholipase A2 was purified to homogeneity from human spleen. The enzyme was solubilized from the particulate fraction by the addition of KBr, and purified by reverse-phase high-performance liquid chromatography. The estimated molecular weight of the enzyme was 14,000. The enzyme had a pH optimum around 9.5, required the presence of Ca2+ for its activity, and hydrolyzed phosphatidylethanolamine more efficiently than phosphatidylcholine.
mesh_terms: D002118:Calcium / Q000494:pharmacology; D002462:Cell Membrane / Q000201:enzymology; D002845:Chromatography; D004591:Electrophoresis, Polyacrylamide Gel; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008670:Metals / Q000494:pharmacology; D008970:Molecular Weight; D010740:Phospholipases / Q000302:isolation & purification*; D010741:Phospholipases A / Q000037:antagonists & inhibitors / Q000302:isolation & purification* / Q000378:metabolism; D054467:Phospholipases A2; D013154:Spleen / Q000201:enzymology*
chemical_list: D008670:Metals; D010740:Phospholipases; D010741:Phospholipases A; D054467:Phospholipases A2; D002118:Calcium