Abstract
Genetic polymorphism of uropepsinogen group A (PGA) was characterized in human urine using a technique involving both polyacrylamide gel isoelectric focusing and immunoblotting with an anti-PGA antibody. PGA was clearly separable into five fractions, termed I to V in order of decreasing anodal mobility. The most slowly migrating fraction V was composed of F (fast) and/or S (slow) band(s). The population frequencies of the three patterns of fraction V (F, FS, and S) and family studies indicated that PGA V is controlled by a pair of alleles, PGA V*F and PGA V*S, at a single autosomal locus, and that both are codominant. The frequencies of the genes are 0.07 for PGA V*F and 0.93 for PGA V*S.
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