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Plant Physiology 80:859-862 (1986) © 1986 American Society of Plant Biologists Detection of the Messenger RNA Encoding for the Ferredoxin-Dependent Glutamate Synthase in Maize LeafLaboratoire de Biologie Cellulaire, INRA CNRA, Route de St Cyr, 78000 Versailles, France, Laboratoire de Physiologie Végétale Moléculaire, Bât 430, Université de Paris-Sud, 91405 Orsay Cedex, France, Department of Biology, Mac Master University, 1280 Main Street West, Hamilton Ontario L8J 4K1, Canada Ferredoxin-dependent glutamate synthase (EC 1.4.7.1), glutamate oxoglutarate aminotransferase (glutamate synthase) (GOGAT) messenger RNA was extracted from maize (Zea mays L.) leaves and partially purified through oligo(dT)-cellulose chromatography and ultracentrifugation in a sucrose gradient. mRNA were translated in vitro using a reticulocyte system. The glutamate synthase subunit was characterized by immunoprecipitation with antibodies raised against the rice (Oryza sativa L.) ferredoxin-glutamate synthase. The in vitro synthesized protein and the 145 kilodaltons genuine maize leaf subunit of GOGAT were found to comigrate in sodium dodecyl sulfate-polyacrylamide gel electrophoresis experiments.
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