Rare phenotypes of the phosphoglucomutase locus 1 detectable by isoelectric focusing on Cellogel

Summary The rare phenotypes PGM₁, determined by alleles PGM₃¹, PGM₄¹, PGM₆¹, and PGM₇¹were examined by starch gel electrophoresis and cellulose acetate gel isoelectric focusing and were compared with the commonest phenotypes of PGM₁.The frequencies of the rare genes found in the Polish populations were as follows: in Lublin, PGM₃¹=0.0002, PGM₄¹=0.0005, PGM₆¹=0.0010, and PGM₇¹=0.0005; in Wroclaw, PGM₃¹=0.0000, PGM₄¹=0.0005, PGM₆¹=0.0007, and PGM₇¹=0.0002.The results suggest that the F and S type variants of the genes PGM₄¹and PGM₇¹probably do not occur. It is still possibile that F and S variants exist for the genes PGM₃¹and PGM₆¹.