1.4.7.1: glutamate synthase (ferredoxin)
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For detailed information about glutamate synthase (ferredoxin), go to the full flat file.
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Synonyms
abc1, At5g04140, ES7, Fd-dependent glutamate synthase, Fd-GOGAT, Fd-GOGAT1, FdGOGAT, ferredoxin-dependent GltS, ferredoxin-dependent glutamate synthase, ferredoxin-dependent glutamate synthase1, ferredoxin-dependent glutamine 2-oxoglutarate aminotransferase, ferredoxin-dependent GOGAT, ferredoxin-glutamate synthase, ferredoxin-GOGAT, gltB, GltS, Glu1, glutamate synthase, glutamate synthase (ferredoxin-dependent), glutamine 2-oxoglutarate amidotransferase, glutamine:2-oxoglutarate amidotransferase, glutamine:oxoglutarate amidotransferase, GOGAT, lc7
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Source Tissue
Source Tissue on EC 1.4.7.1 - glutamate synthase (ferredoxin)
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additional information
glu1 mainly expressed in the leaves, at significantly higher level than glu2
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enzyme represents the major isoform, activity increases under nitrogen feeding
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ammonium assimilation occurs via glutamine synthetase EC 6.1.1.3 and enzyme, regardless of leaf age. L-glutamate is continuously synthesized and supplied to the phloem. Enzyme is localized to the phloem companion cells-sieve element complex in the leaf veins
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enzyme is active both in light and dark. In transgenic leaf disks expressing antisense enzyme mRNA, low level of enzyme limits the synthesis of glutamate. In the dark, low level of enzyme in transgenic leaves is not the main limiting factor of ammonium assimilation
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existence of the enzyme in the companion cells, which are adjacent to the sieve elements, of the central cylinder in rice roots is advantageous for the access and efficient utilization of glutamine and carbohydrate transported through the sieve elements under anaerobic conditions
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in etiolated seedling, enzyme activity doubles within 1 h upon exposure to light, and a further 4fold increase in comparison with dark value is reached within 5 h
Fd-GOGAT1 is more highly expressed in leaves than in roots
additional information
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Fd-GOGAT1 is more highly expressed in leaves than in roots