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  • Title: Four isoforms of glutamine synthetase in light-grown soybeans.
    Author: Dyviniak SD, Dunham VL.
    Journal: Biochem Biophys Res Commun; 1983 Jul 29; 114(2):604-11. PubMed ID: 6136278.
    Abstract:
    Glutamine synthetase (GS) activity recovered from linear sucrose gradients was associated with the cytosol of cells isolated from etiolated soybean hypocotyls whereas light-grown tissue contained increased GS activity localized in both the cytosol and chloroplasts. DEAE-cellulose chromatography indicated two GS isoforms in etiolated hypocotyls whereas light-grown hypocotyls and primary leaves contained four isoforms. Only one GS isoform was recovered from both etiolated and light-grown cotyledons.
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