Red cell enzyme and serum protein polymorphisms in the western Cape region of South Africa.

Nine red cell enzyme systems: Acid phosphatase-1 (ACP1), adenosine deaminase (ADA), adenylate kinase-1 (AK1), esterase D (ESD), 6-phosphogluconate dehydrogenase (PGD), phosphoglucomutase first and second loci (PGM1, PGM2), carbonic anhydrase-2 (CA2) and glyoxalase-I (GLO1); and three serum protein systems: haptoglobin (HP), transferrin (TF) and properdin factor B (BF), were examined in four populations--Caucasoids, "Cape Coloureds", Cape Malays and Negroes--in the western Cape region of South Africa. The results show distinct differences between the four groups for several genetic markers.