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1.8.5.1: glutathione dehydrogenase (ascorbate)

This is an abbreviated version!
For detailed information about glutathione dehydrogenase (ascorbate), go to the full flat file.

Word Map on EC 1.8.5.1

Reaction

2 glutathione +

dehydroascorbate
=
glutathione disulfide
 +
ascorbate

Synonyms

At1g19570, At1g75270, At5g16710, AtDHAR, AtDHAR1, AtDHAR2, AtDHAR3, CrDHAR1, DasA reductase, dehydroascorbate reductase, dehydroascorbate reductase 2, dehydroascorbic acid reductase, dehydroascorbic reductase, dehydrogenase, glutathione (ascorbate), DHA reductase, DHA-R, DHAR, DHAR1, DHAR2, DHAR3, DHAR3a, DHAR4, DHAR5, dioscorin, GDOR, glutathione dehydroascorbate reductase, glutathione-dependent dehydroascorate reductase, glutathione:dehydroascorbic acid oxidoreductase, GRX1, GRX2, GSH-DHAR, GSH:DHA-oxidoreductase, GSTO, GSTO1, GSTO1-1, GSTO2, GSTO2-2, LcDHAR, metallothionein-1, metallothionein-2, More, MT-I, MT-II, nlGSTO, OsDHAR, OsDHAR1, PbDHAR, PgDHAR1, PtrDHAR1, PtrDHAR2, PtrDHAR3A, PtrDHAR3B, SPD1

ECTree

     1 Oxidoreductases
         1.8 Acting on a sulfur group of donors
             1.8.5 With a quinone or similar compound as acceptor
                1.8.5.1 glutathione dehydrogenase (ascorbate)

Expression

Expression on EC 1.8.5.1 - glutathione dehydrogenase (ascorbate)

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EXPRESSION
ORGANISM
UNIPROT
LITERATURE
after priming seeds of Brassica napus with PEG, the DHAR protein abundance is upregulated during subsequent germination
-
beauvericin induces the enzyme
DHAR transcript and enzyme activity are significantly up-regulated in the leaves of acerola under cold and salt stress conditions
enzyme expression is up-regulated in response to freezing stress
-
in vitro oxidation of the recombinant CrDHAR1 in the presence of 1 mM H2O2 has minor effects on the Km for the substrates but significantly reduces the kcat. The enzyme's activity and its mRNA abundance in the Chlamydomonas reinhardtii cells are increased by treatment with 0.2-1.0 mM H2O2 but decreased when H2O2 is over 1.5 mM
the enzyme expression is down-regulated under salinity stress (250 mM NaCl)
the enzyme expression is up-regulated in response to high temperature (45°C)
treating seeds of silver maple (Acer saccharinum) with 2.5 mM GSH results in slower dehydration and a higher germination capacity compared to control seeds soaked with water, and a strong positive correlation between DHAR activity and germination capacity is detected in the GSH-treated seeds
-
under dark conditions, there is a sharp and significant decline in the total and reduced ascorbate contents, accompanied by a decrease in the level of transcripts and enzyme activities of the two genes in acerola leaves