title: Alpha 2-macroglobulin from horse plasma. Purification, properties and interaction with certain serine proteinases.
abstract: alpha 2-macroglobulin was isolated by polyethylene glycol precipitation, gel filtration on Sephacryl S-300 and DE-52 cellulose chromatography, with 20% yield. The preparation obtained was homogenous as tested by biochemical and immunological criteria. Its molecular mass was estimated at 800,000, comprising of four identical subunits. The isoelectric point of our preparation was 4.8 and two molecules of serine proteinases per 1 molecule of inhibitor were bound.
mesh_terms: D000818:Animals; D002918:Chymotrypsin / Q000037:antagonists & inhibitors; D006736:Horses / Q000097:blood*; D010196:Pancreatic Elastase / Q000037:antagonists & inhibitors; D014361:Trypsin Inhibitors; D000511:alpha-Macroglobulins / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D014361:Trypsin Inhibitors; D000511:alpha-Macroglobulins; D002918:Chymotrypsin; D010196:Pancreatic Elastase