title: Rat pancreas actin: purification and characterization.
abstract: Isolation of rat pancreas actin was performed with three different technics: polymerization-depolymerization method, affinity chromatography on DNase I-Sepharose 4B or ion exchange chromatography on DEAE-cellulose. Inhibition of DNase I activity, localization by SDS polyacrylamide slab gel electrophoresis and presence of microfilaments allowed its identification. Affinity process led us to obtain actin which kept inhibitory activity (30,000 U per mg) on DNase I when using vacuum dialysis. Actin eluted from DEAE-cellulose associated reversibly in 50-70 A microfilaments in the presence of phalloidin, was pure at 95% and had a satisfactory inhibitor activity (77,000 U per mg).
mesh_terms: D000199:Actins / Q000302:isolation & purification*; D000818:Animals; D002846:Chromatography, Affinity; D002848:Chromatography, DEAE-Cellulose; D003850:Deoxyribonuclease I; D004591:Electrophoresis, Polyacrylamide Gel; D004706:Endodeoxyribonucleases / Q000378:metabolism; D008854:Microscopy, Electron; D010179:Pancreas / Q000032:analysis*; D011108:Polymers; D051381:Rats
chemical_list: D000199:Actins; D011108:Polymers; D004706:Endodeoxyribonucleases; D003850:Deoxyribonuclease I