Abstract
The antigenic relationships between the prolamins of barley, rye and wheat have been studied by examining the specificity of an antibody to ‘C’ hordein in a quantitative study using a laser nephelometer. The antibody reacts weakly with ‘B’ hordein and strongly with 75-kdalton and 40-kdalton γ-secalins from rye and γ3 some ω-gliadins from wheat. Absorption experiments and immunodiffusion tests indicate that there are shared antigenic determinants for most of the prolamins. All the species with reacting prolamins belong to the sub-family Festucoideae of the Gramineae. The prolamins of maize, pearl millet and sorghum, species of the sub-family Panicoideae, do not react. The results confirm the known lack of homology between the prolamins of the two sub-families and also indicate the presence of relationships not yet established between ‘C’ hordein, the 75-kdalton and 40-kdalton γ-secalins and also γ3 gliadin.
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Abbreviations
- HMW:
-
high molecular weight
- PAGE:
-
polyacnylamide-gel electrophoresis
- PBS:
-
phosphate-buffered saline
- RLS:
-
relative light scattering
- SDS:
-
sodlum dodecyl sulphate
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Festenstein, G.N., Hay, F.C., Miflin, B.J. et al. Immunochemical studies on barley seed storage proteins. Planta 162, 524–531 (1984). https://doi.org/10.1007/BF00399918
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DOI: https://doi.org/10.1007/BF00399918