Immunological analysis of alpha 1-microglobulin in different mammalian and chicken serum. alpha 1-Microglobulin is 5-8 kilodaltons larger in primates.
Heterologous radioimmunoassays for a semiquantitative analysis of alpha 1-microglobulin were developed, exploiting the binding between polyclonal rabbit or goat antisera against human, guinea pig, or rat alpha 1-microglobulin and 125I-labeled human, guinea pig, or rat alpha 1-microglobulin. Homologues of this protein were detected in human, guinea pig, Rhesus monkey, rat, mouse, rabbit, goat, horse, and cow serum by inhibition of a set of heterologous radioimmunoassays. Serum proteins were separated by gel chromatography, and fractions were pooled, concentrated, and radiolabeled with 125I. By immunoprecipitation of the radioiodinated serum pools with heterologous anti-alpha 1-microglobulin-sera, and separating the precipitates by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, analogues of alpha 1-microglobulin were isolated from serum of man, guinea pig, Rhesus monkey, rat, mouse, horse, and chicken. The apparent molecular weight of alpha 1-microglobulin was 31,000-32,000 in human and monkey serum and 24,000-26,000 in guinea pig, rat, mouse, horse, and chicken serum. The possibility of an addition of a 5,000-8,000-Da peptide in primate alpha 1-microglobulin is discussed.
Akerström
B
B
D000510:Alpha-Globulins / Q000032:analysis*; D000818:Animals; D002645:Chickens / Q000097:blood*; D003429:Cross Reactions; D004591:Electrophoresis, Polyacrylamide Gel; D006168:Guinea Pigs; D006736:Horses; D006801:Humans; D008253:Macaca mulatta; D008322:Mammals / Q000097:blood*; D051379:Mice; D008970:Molecular Weight; D051381:Rats; D013045:Species Specificity
D000510:Alpha-Globulins; C016001:alpha-1-microglobulin