Further studies of the plasma alpha 1 B-glycoprotein polymorphism: two new alleles and allele frequencies in Caucasians and in American blacks.
Two new alleles (A1 B*3 and A1 B*4) of human plasma alpha 1 B-glycoprotein (alpha 1 B) were reported. alpha 1 B phenotyping was done by using either a simple method of two-dimensional (2-D) agarose gel-horizontal polyacrylamide gel electrophoresis (PAGE) followed by protein staining or by one-dimensional horizontal PAGE and immunoblotting. Seven different alpha 1 B phenotypes (1-1, 1-2, 1-3, 1-4, 2-2, 2-3 and 3-3) were observed; phenotypes 1-3 and 1-4 were differentiated from each other only by the 2-D method. The respective frequencies Af A1 B*1, A1 B*2, A1 B*3 and A1 B*4 alleles in the studied populations were estimated as follows: American Blacks (New York) 0.732, 0.204, 0.064, 0; American Whites (New York) 0.947, 0.053; Czechs (Mĕlník) 0.964, 0.034, 0, 0.002; Slovaks (Bratislava and Trencin) 0.977, 0.023, 0, 0. The population of American Blacks showed a much higher degree of alpha 1 B polymorphism (polymorphism information content = 0.37) than the Caucasian populations that have been studied.
Juneja
R K
RK
Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala.
Weitkamp
L R
LR
Stratil
A
A
Gahne
B
B
Guttormsen
S A
SA
D000483:Alleles; D001315:Australia; D044383:Black People / Q000235:genetics*; D001798:Blood Proteins / Q000235:genetics*; D003604:Czechoslovakia; D005787:Gene Frequency; D006023:Glycoproteins; D006801:Humans; D007136:Immunoglobulins; D009518:New York; D010641:Phenotype; D011110:Polymorphism, Genetic; D044465:White People / Q000235:genetics*; D001741:Black or African American
C048566:A1BG protein, human; D001798:Blood Proteins; D006023:Glycoproteins; D007136:Immunoglobulins