title: Phospholipase C from Clostridium novyi type A. I.
abstract: 1. Phospholipase C (EC 3.1.4.3) from Clostridium novyi (oedematiens) type A was purified 2000-fold by (NH4)2SO4 precipitation, DEAE-Sephadex treatment in a batchwise system and Sephadex G-100 column chromatography. 2. The purified preparation had a specific activity of 95 mumol per min per mg protein toward phosphatidylcholine. This preparation was free from protease, lipase and oxygen-labile delta-hemolysin. 3. Phosphatidylcholine was hydrolyzed at the highest rate, while sphingomyelin and lysophosphatidylcholine were hydrolyzed at much lower rates. 4. Sodium deoxycholate and divalent cations such as Mg2+ and Ca2+ were extremely effective in stimulating phosphatidylcholine-hydrolyzing activity of this enzyme. 5. This enzyme hemolyzed horse red cells by hydrolyzing phosphatidylcholine, spingomyelin and phosphatidylethanolamine.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology; D003013:Clostridium / Q000201:enzymology*; D003840:Deoxycholic Acid / Q000494:pharmacology; D004912:Erythrocytes / Q000187:drug effects; D006461:Hemolysis; D006736:Horses; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D008274:Magnesium / Q000494:pharmacology; D008970:Molecular Weight; D010713:Phosphatidylcholines / Q000378:metabolism; D010740:Phospholipases / Q000302:isolation & purification / Q000378:metabolism*; D010743:Phospholipids / Q000378:metabolism; D013501:Surface-Active Agents / Q000494:pharmacology
chemical_list: D010713:Phosphatidylcholines; D010743:Phospholipids; D013501:Surface-Active Agents; D003840:Deoxycholic Acid; D010740:Phospholipases; D008274:Magnesium; D002118:Calcium