Data di Pubblicazione:
1977
Citazione:
Amino acid composition of zein molecular components / E. Gianazza, V. Viglienghi, P.G. Righetti, F. Salamini, C. Soave. - In: PHYTOCHEMISTRY. - ISSN 0031-9422. - 16:3(1977), pp. 315-317. [10.1016/0031-9422(77)80054-X]
Abstract:
Zein extracted from maize endosperm has been fractionated into four polypeptide chains, having the following MWs 23 000, 21 000, 13 500 and 9600. By amino acid analysis the two smaller MW chains (representing 30% of total zeins) have been found to be zein-type molecules. These two chains are thought to be responsible for zein granule formation via -S-S- bridges. Zein is also highly heterogeneous in charge, and is resolved into at least 15 components, with pI's in the pH range 5-9. As demonstrated by amino acid analysis, part of this heterogeneity is due to spot mutations in some of the genes responsible for zein synthesis.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
amino acid composition; Gramineae; isoelectric focusing.; maize; protein bodies; Zea mays L.; zein
Elenco autori:
E. Gianazza, V. Viglienghi, P.G. Righetti, F. Salamini, C. Soave
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