title: Advanced lipid extraction method for the determination of the phospholipase D activity.
abstract: Phospholipase D is a ubiquitous enzyme that plays an important role in various lipid mediated cellular signaling pathways and produces rare phospholipids, phosphatidylethanol or phosphatidylbutanol, instead of phosphatidic acid with unique catalytic activity transphosphatidylation in the presence of primary alcohols. The reaction products, phosphatidylethanol or phosphatidylbutanol are used as markers of in vitro phospholipase D activity in many studies. For the sensitive detection of the phospholipase D products, we developed an advanced lipid extraction method that facilitates recovery of the compounds. With the new method, the activity change of phospholipase D by agonists could be detected more easily and the recovery rate was also increased. The increase of detected enzyme activity change was about double fold compared to the conventional lipid extraction method. This method provides selective force for the phospholipase D products in the extraction procedure.
authors.affiliation: Institute of Biomedical Science and Department of Biochemistry, College of Medicine, Hanyang University, 17 Seoul 133-792, Korea.
authors.forename: Changsuek
authors.initials: C
authors.lastname: Yon
authors.forename: Min Ho
authors.initials: MH
authors.lastname: Lee
authors.forename: Doo-Yi
authors.initials: DY
authors.lastname: Oh
authors.forename: Dal-Soo
authors.initials: DS
authors.lastname: Kim
authors.forename: Ki Sung
authors.initials: KS
authors.lastname: Lee
authors.forename: Joong-Soo
authors.initials: JS
authors.lastname: Han
mesh_terms: D045744:Cell Line, Tumor / Q000201:enzymology; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004789:Enzyme Activation / Q000502:physiology; D006801:Humans; D008055:Lipids / Q000032:analysis*; D010739:Phospholipase D / Q000032:analysis* / Q000378:metabolism*
chemical_list: D008055:Lipids; D010739:Phospholipase D