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  • Title: Characterization of isoforms of hexose kinases in rice embryo.
    Author: Guglielminetti L, Perata P, Morita A, Loreti E, Yamaguchi J, Alpi A.
    Journal: Phytochemistry; 2000 Jan; 53(2):195-200. PubMed ID: 10680171.
    Abstract:
    Hexose kinases in rice embryos have been characterized. Six isoforms were detected: i.e. three glucokinases (GK1-3), two hexokinases (HK1 and HK2) and one fructokinase (FK1). Out of these, GK3, HK1 and HK2 were inhibited by mannoheptulose and glucosamine, known inhibitors of hexokinase activity. These inhibitors are also known to be modulators of sugar sensing processes. The results suggest that GK3, HK1 and HK2 may play a role in sensing the cellular sugar status in the rice embryo.
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