title: Plasma protease inhibitor (PI) system in the laboratory opossum, Monodelphis domestica.
abstract: Protease inhibitor (PI) polymorphism was observed in the laboratory opossum, Monodelphis domestica, by either one-dimensional acid polyacrylamide gel electrophoresis (PAGE; pH 4.6) or isoelectric focusing (pH 3.5-5.0) followed by immunoblotting with rabbit antiserum to human alpha 1-antitrypsin; but acid PAGE produced superior resolution of the PI proteins. Family studies demonstrated an inheritance of nine codominant autosomal alleles, PID, PIE, PIF, PIG, PIH, PII, PIJ, PIK, and PIM, and a population study revealed frequencies of 0.411, 0.010, 0.341, 0.034, 0.023, 0.071, 0.035, 0.020, and 0.055, respectively.
authors.affiliation: Department of Physiology and Pharmacology, University of Queensland, St. Lucia, Australia.
authors.forename: H
authors.initials: H
authors.lastname: Arthur
authors.forename: K
authors.initials: K
authors.lastname: Bell
authors.forename: J L
authors.initials: JL
authors.lastname: VandeBerg
authors.forename: R A
authors.initials: RA
authors.lastname: van Oorschot
mesh_terms: D000818:Animals; D003433:Crosses, Genetic; D004591:Electrophoresis, Polyacrylamide Gel; D009893:Opossums / Q000097:blood*; D011110:Polymorphism, Genetic; D011480:Protease Inhibitors / Q000097:blood*
chemical_list: D011480:Protease Inhibitors