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Digitale Medien

Expression of storage-protein genes during soybean seed development (1981)

Meinke, D. W. ; Chen, J. ; Beachy, R. N.

Springer

Planta 153 (1981), S. 130-139

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ISSN: 1432-2048

Schlagwort(e): Embryonic axis ; Glycine ; mRNA accumulation ; Seed development ; Storage proteins

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Abstract Mature seeds of Glycine max (L.) Merr. contain two major storage proteins, a glycosylated 7S protein (conglycinin) and a non-glycosylated 11S protein (glycinin). Accumulation of these proteins and their mRNAs during seed development in cv. Provar was studied by SDS polyacrylamide gel electrophoresis and by “Northern” (DNA-RNA) hybridization. The 11S acidic and basic subunits and the 7S α′ and α subunits began to accumulate 18–20 d after pollination, shortly after the termination of cell division in developing cotyledons, whereas the 7S β and 11S A-4 subunits were not detected until one to two weeks later, during the maturation phase of development. Messenger RNAs for 7S and 11S proteins were first detected 14–18 d after pollination, several days before the accumulation of storage proteins. Extracts from embryonic axes contained reduced levels of the 7S α subunit, very little 11S protein, no detectable 7S β or 11S A-4 subunits, and an additional 7S subunit not found in cotyledons. Soybean axes and cotyledons therefore differ in their synthesis of seed storage proteins.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00384094

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Digitale Medien

Some evidence against the existence of the liquid-liquid transition. III. The evaluation of the Tll event by differential scanning calorimetryCorrected proofs received July 12, 1982 (1982)

Chen, J. ; Kow, C. ; Fetters, L. J. ; [weitere]

New York : Wiley-Blackwell

Journal of Polymer Science: Polymer Physics Edition 20 (1982), S. 1565-1574

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ISSN: 0098-1273

Schlagwort(e): Physics ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Physik

Notizen: The liquid-liquid transition Tll has been examined by using differential scanning calorimetry as the tool of measurement. The results presented show that for the case of polystyrene, the Tll event appears to be an artifact caused by the presence of volatile components. Purified samples of polystyrene, polydienes, and poly(1-butene) do not show the Tll transition.

Zusätzliches Material: 7 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/pol.1982.180200905

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Digitale Medien

Polymer conformation based on correlated walk model (1980)

Chen, J. T. ; Okamura, Y. ; Fujita, S.

New York : Wiley-Blackwell

Journal of Polymer Science: Polymer Physics Edition 18 (1980), S. 175-176

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ISSN: 0098-1273

Schlagwort(e): Physics ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Physik

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/pol.1980.180180117

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