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Sorbitol-6-Phosphate Dehydrogenase from Loquat Fruit
Author(s) -
Masashi Hirai
Publication year - 1979
Publication title -
plant physiology
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1104/pp.63.4.715
Subject(s) - sorbitol , sorbitol dehydrogenase , dehydrogenase , phosphate , glucose 6 phosphate dehydrogenase , chemistry , biochemistry , horticulture , food science , botany , biology , enzyme
Sorbitol-6-phosphate dehydrogenase was found in flesh tissue of mature fruit of the loquat (Eriobotrya japonica Lindl. var. Tanaka). The enzyme was purified about 30-fold from the crude extract of the fruit, and was demonstrated to catalyze sorbitol-6-phosphate + NADP right harpoon over left harpoon glucose-6-phosphate + NADPH. The optimal pH values for sorbitol 6-phosphate oxidation and glucose 6-phosphate reduction were 9.8 and 9.1, respectively.

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