Human placental glucose dehydrogenase: IEF polymorphism in two Italian populations and enzyme activity in the six common phenotypes

Placental glucose dehydrogenase polymorphism in Koreans

The genetic polymorphism of placental glucose dehydrogenase (GDH) was investigated in 300 Korean placentae using horizontal starch gel electrophoresis. The allele frequencies for GDH1, GDH2 and GDH3 were 0.537, 0.440 and 0.005, respectively, which were similar to those in Japanese. We also observed an anodal allele which was similar to the GDH4 originally reported in Chinese populations at a low frequency of 0.015. An additional new cathodal allele (named GDH6) was observed in the present study with a very low frequency of 0.003.

Polymorphism of glucose dehydrogenase (GDH, EC 1.1.1.47): formal and population genetic data

The polymorphism of glucose dehydrogenase (GDH) is demonstrated by isoelectric focusing of leucocyte extracts followed by enzyme staining. Segregation in 52 families with 145 children is consistent with the formal hypothesis of three common alleles, GDH*1, GDH*2 and GDH*3, at an autosomal locus GDH. Allele frequencies from 104 unrelated individuals from southwestern Germany were calculated as GDH*1 = 0.70, GDH*2 = 0.18 and GDH*3 = 0.12.