Characterisation of the isoenzymes of phosphoglucomutase (PGM) determined by the first (PGM1) and second (PGM2) locus observed by isoelectric focusing.

The existence of four alleles of phosphoglucomutase (PGM1) in human red cell lysates has previously been demonstrated by isoelectric focusing (Bark et al., 1976; Kühnl et al., 1977; Sutton and Burgess, 1978). Experiments are now described in which the position of each of the first-locus (PGM1) and second-locus (PGM2) isoenzymes is defined, thus extending and confirming the original proposal made by Bark et al.