title: Frequencies of plasma protease inhibitor alleles in Australian horse breeds and the recognition of two new alleles.
abstract: Investigation of the plasma protease inhibitor system (Pi) in the Arabian and quarter horse breeds and re-examination of the standardbred breed resulted in the recognition of two new Pi alleles, designated E and L2. PiE is rare and has been found in only three quarter horses. In contrast, PiL2 is relatively common in the standardbred (0.107) and allowed subdivision of PiL into PiL and PiL2. Splitting of PiL resulted in an exclusion probability (PE) of 0.649 for the standardbred Pi system. Frequencies of the Pi genes have now been determined for four breeds (thoroughbred, standardbred, quarter horse and Arabian) of horses in Australia.
authors: Department of Physiology and Pharmacology, University of Queensland, St Lucia, Australia.
authors: S D
authors: SD
authors: Patterson
authors: K
authors: K
authors: Bell
mesh_terms: D000483:Alleles; D000818:Animals; D001315:Australia; D003433:Crosses, Genetic; D005260:Female; D005787:Gene Frequency; D006736:Horses / Q000235:genetics*; D008297:Male; D011480:Protease Inhibitors / Q000097:blood / Q000235:genetics*; D013045:Species Specificity
chemical_list: D011480:Protease Inhibitors