Hydrolytic activity of lipase on anion-exchange solid phase column after separation and electrotransfer by...

This study reports the initial separation of phospholipase C-alpha from porcine retina using non-denaturing two-dimensional gel electrophoresis (2-DE). Detection was by negative staining and then its hydrolytic activity was estimated using alpha-naphthyl acetate in a 2-DE gel. A spot of phospholipase C-alpha separated by 2-DE was excised. It was then electrophoretically transferred to an anion-exchange solid phase column after 40 mg, equal to dry weight of the solid resin from the cartridge (Accell Plus QMA, Waters Corporation), was packed into a disposable 1 ml syringe to make an anion-exchange solid phase column. Phosphatidylcholine was hydrolyzed in the anion-exchange solid phase column containing phospholipase C-alpha. The results indicated that a column with hydrolytic activity could be produced once lipases separated by non-denaturing 2-DE were transferred to the solid phase column.