Abstract
Seed proteins fromCicer arietinum L.,C. reticulatum Ladiz. andC. echinospermum Davis were extracted and separated into water soluble (albumin) and water insoluble (globulin) fractions. These were analysed using three polyacrylamide gel systems: uniform pore slab gels, gradient gels and SDS disc gels. For all three species, albumins constitute just over one-third of total protein. Minor differences in the composition of this fraction were observed. Within the globulin fraction, seven disulphide-linked polypeptides were found. Four of these resemble the major polypeptide of legumin, consisting of constant small subunit (21,000 daltons) linked to variable large subunit (46,000, 41,000, 39,000 or 36,000 daltons), forming polypeptides of 67,000 (I), 62,000 (II), 60,000 (III) and 57,000 (IV) daltons respectively. Polypeptide I was prominent in both wild species, but absent fromC. arietinum. Polypeptides II and III were equally prominent inC. arietinum andC. reticulatum. Polypeptide IV was more prominent inC. echinospermum, which was deficient in polypeptide III. Polypeptides V (45,000 daltons) and VI (43,000 daltons), apparently composed of two equal subunits, were present in trace amounts in both wild species, but well represented inC. arietinum Polypeptide VII of 45,000 daltons (31,000 + 14,000) was present in all three species.
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Vairinhos, F., Murray, D.R. The seed proteins of chick pea: Comparative studies ofCicer arietinum, C. reticulatum andC. echinospermum (Leguminosae) . Pl Syst Evol 142, 11–22 (1983). https://doi.org/10.1007/BF00989600
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DOI: https://doi.org/10.1007/BF00989600