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Information on EC 1.3.2.3 - L-galactonolactone dehydrogenase and Organism(s) Arabidopsis thaliana and UniProt Accession Q9SU56

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IUBMB Comments
This enzyme catalyses the final step in the biosynthesis of L-ascorbic acid in higher plants and in nearly all higher animals with the exception of primates and some birds . The enzyme is very specific for its substrate L-galactono-1,4-lactone as D-galactono-gamma-lactone, D-gulono-gamma-lactone, L-gulono-gamma-lactone, D-erythronic-gamma-lactone, D-xylonic-gamma-lactone, L-mannono-gamma-lactone, D-galactonate, D-glucuronate and D-gluconate are not substrates . FAD, NAD+, NADP+ and O2 (cf. EC 1.3.3.12, L-galactonolactone oxidase) cannot act as electron acceptor .
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Arabidopsis thaliana
UNIPROT: Q9SU56
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Word Map
The taxonomic range for the selected organisms is: Arabidopsis thaliana
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
Synonyms
l-galactono-1,4-lactone dehydrogenase, galldh, l-galactono-gamma-lactone dehydrogenase, ferricytochrome c oxidoreductase, l-galldh, gldhase, galactono-1,4-lactone dehydrogenase, galactonolactone dehydrogenase, gldase, l-galactonolactone dehydrogenase, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
galactonolactone dehydrogenase
-
L-galactono-1,4-lactone dehydrogenase
-
L-galactono-gamma-lactone dehydrogenase
-
dehydrogenase, galactonolactone
-
-
-
-
ferricytochrome c oxidoreductase
-
-
L-galactone-1,4-lactone dehydrogenase
-
-
L-galactono-1,4-lactone dehydrogenase
-
-
L-galactono-gamma-lactone dehydrogenase
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
redox reaction
-
-
-
-
oxidation
reduction
SYSTEMATIC NAME
IUBMB Comments
L-galactono-1,4-lactone:ferricytochrome-c oxidoreductase
This enzyme catalyses the final step in the biosynthesis of L-ascorbic acid in higher plants and in nearly all higher animals with the exception of primates and some birds [5]. The enzyme is very specific for its substrate L-galactono-1,4-lactone as D-galactono-gamma-lactone, D-gulono-gamma-lactone, L-gulono-gamma-lactone, D-erythronic-gamma-lactone, D-xylonic-gamma-lactone, L-mannono-gamma-lactone, D-galactonate, D-glucuronate and D-gluconate are not substrates [5]. FAD, NAD+, NADP+ and O2 (cf. EC 1.3.3.12, L-galactonolactone oxidase) cannot act as electron acceptor [5].
CAS REGISTRY NUMBER
COMMENTARY hide
9029-02-1
-
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
L-galactono-1,4-lactone + 4 ferricytochrome c
L-dehydroascorbate + 4 ferrocytochrome c + 4 H+
show the reaction diagram
overall reaction
-
-
?
L-galactono-1,4-lactone + ferricytochrome c
L-ascorbate + ferrocytochrome c + H+
show the reaction diagram
-
-
-
?
D-arabinono-1,4-lactone + ferrocytochrome c + H+
?
show the reaction diagram
-
-
-
-
?
L-galactono-1,4-lactone + 1,4-benzoquinone
L-ascorbate + reduced 1,4-benzoquinone
show the reaction diagram
-
-
-
-
?
L-galactono-1,4-lactone + 2 ferricytochrome c
L-ascorbate + 2 ferrocytochrome c + 2 H+
show the reaction diagram
L-galactono-1,4-lactone + cytochrome c
L-ascorbate + reduced cytochrome c
show the reaction diagram
-
-
-
-
?
L-galactono-1,4-lactone + ferricytochrome c
L-ascorbate + ferrocytochrome c
show the reaction diagram
-
-
-
-
?
L-galactono-1,4-lactone + ferricytochrome c
L-ascorbate + ferrocytochrome c + H+
show the reaction diagram
-
-
-
-
?
L-galactono-1,4-lactone + phenazine methosulfate
L-ascorbate + reduced phenazine methosulfate
show the reaction diagram
-
-
-
-
?
L-gulono-1,4-lactone + ferricytochrome c
L-ascorbate + ferrocytochrome c
show the reaction diagram
-
-
-
-
?
additional information
?
-
NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
L-galactono-1,4-lactone + 4 ferricytochrome c
L-dehydroascorbate + 4 ferrocytochrome c + 4 H+
show the reaction diagram
overall reaction
-
-
?
L-galactono-1,4-lactone + ferricytochrome c
L-ascorbate + ferrocytochrome c + H+
show the reaction diagram
-
-
-
?
L-galactono-1,4-lactone + 2 ferricytochrome c
L-ascorbate + 2 ferrocytochrome c + 2 H+
show the reaction diagram
L-galactono-1,4-lactone + ferricytochrome c
L-ascorbate + ferrocytochrome c + H+
show the reaction diagram
-
-
-
-
?
COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
ferricytochrome c
-
-
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
5,5'-dithiobis(2-nitrobenzoic acid)
thiol-modifying agent
H2O2
GALDH is inactivated by hydrogen peroxide due to selective oxidation of cysteine 340, located in the cap domain
N-ethylmaleimide
thiol-modifying agent
L-galactono-1,4-lactone
-
inhibitory at concentrations above 2 mM
additional information
-
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.17 - 9
L-galactono-1,4-lactone
0.28
1,4-benzoquinone
-
wild type enzyme, in the presence of L-galactono-1,4-lactone, in 50 mM sodium phosphate (pH 8.8), at 25°C
0.034
cytochrome c
-
wild type enzyme, in the presence of L-galactono-1,4-lactone, in 50 mM sodium phosphate (pH 8.8), at 25°C
10.2 - 107
D-arabinono-1,4-lactone
0.12 - 123
L-galactono-1,4-lactone
12.4 - 18.7
L-gulono-1,4-lactone
0.026
phenazine methosulfate
-
wild type enzyme, in the presence of L-galactono-1,4-lactone, in 50 mM sodium phosphate (pH 8.8), at 25°C
TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
59 - 134
L-galactono-1,4-lactone
108
1,4-benzoquinone
-
in the presence of L-galactono-1,4-lactone, in 50 mM sodium phosphate (pH 8.8), at 25°C
151
cytochrome c
-
in the presence of L-galactono-1,4-lactone, in 50 mM sodium phosphate (pH 8.8), at 25°C
1.2 - 51
D-arabinono-1,4-lactone
0.7 - 240
L-galactono-1,4-lactone
0.22 - 10.4
L-gulono-1,4-lactone
64
phenazine methosulfate
-
in the presence of L-galactono-1,4-lactone, in 50 mM sodium phosphate (pH 8.8), at 25°C
Ki VALUE [mM]
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
16.4
L-galactono-1,4-lactone
-
at 25°C
SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
7
-
cell extract, at pH 8.8
76
-
after purification, at pH 8.8
additional information
-
Arabidopsis ppr40-1 mutant which presents a strongly reduced electron flow through complex III, shows a higher activity of GLDH
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
7.2
-
assay at
pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
8 - 9.5
-
for activity with cytochrome c
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
25
-
enzyme assay
pI VALUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
6.8
-
theoretical value for recombinant His-tagged GALDH
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
-
AtGLDH mRNA level exhibits diurnal change. The level is low in the morning and increases during the day. Its level at 18.00 is about 2fold that in the morning at 6.00. Then the level decreases during the night until dawn of the next day. The diurnal change is regulated by light
Manually annotated by BRENDA team
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
GLDH behaves as an integral protein of the inner membrane facing the intermembrane space
Manually annotated by BRENDA team
additional information
in a mutant ndufs4 of NADH dehydrogenase [ubiquinone] iron-sulfur protein 4 of Arabidopsis thaliana Col-0, the enzyme is located in the 400 and 450 kDa carbonic anhydrase-containing complexes accumulating in the ndufs4 mutant
-
Manually annotated by BRENDA team
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
malfunction
metabolism
the enzyme catalyzes the last step of ascorbate synthesis by oxidising L-galactone-1,4-lactone to ascorbate and transferring two electrons to cytochrome c
physiological function
the enzyme can play two distinct roles during complex I assembly. First, it can play a structural or stabilizing role for specific assembly intermediates. Second, it can indirectly be essential through providing the ascorbate that might be required during the assembly process. Enzyme GLDH is not required for the early stages of complex I assembly, but it is important for at least one step of the assembly process (transition from the 200 kDa intermediate to the 400 kDa intermediate), it is associated with some assembly intermediates, but it is absent from the mature complex
physiological function
-
the chlorophyll fluorescence parameters are significantly higher in enzyme-overexpressing mutants than that in wild type after 14 day high light. The degradation of photosynthetic pigment in wild type is more severe than that in the mutant. GLDH-236OE accumulates more ascorbate, anthocyanins, flavonoids, and phenolics, while wild type accumulates more reactive oxygen species during high light
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
GLDH_ARATH
610
0
68555
Swiss-Prot
Mitochondrion (Reliability: 2)
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
420000
-
three distinct GLDH containing protein complexes of 850, 470, and 420 kDa are discovered using a newly developed in gel GLDH activity assay and immunoblotting. Subunits of the novel 470 and 420 kDa complexes are identified by mass spectrometry. Like the 850-kDa complex, they also include complex I subunits
470000
-
three distinct GLDH containing protein complexes of 850, 470, and 420 kDa are discovered using a newly developed in gel GLDH activity assay and immunoblotting. Subunits of the novel 470 and 420 kDa complexes are identified by mass spectrometry. Like the 850-kDa complex, they also include complex I subunits
55000
-
mature enzyme, SDS-PAGE
56000
-
recombinant His-tagged enzyme, gel filtration
58000
-
SDS-PAGE, monomeric form of GLDH
58760
-
predicted molecular mass of mature His-tagged enzyme
850000
-
three distinct GLDH containing protein complexes of 850, 470, and 420 kDa are discovered using a newly developed in gel GLDH activity assay and immunoblotting. The 850-kDa complex represents the known smaller version of mitochondrial complex I. GLDH is shown to be attached to the membrane arm of the 850-kDa complex I
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
-
GLDH forms part of the 850-kDa complex I and part of a rotein complexes of 470 and 420 kDa
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
C340A
mutant, insensitive toward thiol oxidation, exhibits poor affinity for L-galactono-1,4-lactone
C340S
mutant, insensitive toward thiol oxidation, exhibits poor affinity for L-galactono-1,4-lactone
E386A
-
mutant, catalytically far less efficient than wild-type GALDH, Glu386 is involved in productive substrate binding
E386D
-
mutant, catalytically far less efficient than wild-type GALDH, Glu386 is involved in productive substrate binding
GLDH-236OE
-
homozygote mutant with enzyme overexpression
L56A
-
less active than the wild type enzyme
L56C
-
less active than the wild type enzyme
L56F
-
less active than the wild type enzyme
L56H
-
less active than the wild type enzyme and releases its FAD cofactor more easily than wild type GALDH
L56I
-
the mutant displays a higher turnover rate with L-galactono-1,4-lactone than the wild type enzyme
R388A
-
inactive mutant, Arg388 is crucial for the stabilization of the anionic form of the reduced FAD cofactor
R388K
-
mutant, shows significant activity, Arg388 is crucial for the stabilization of the anionic form of the reduced FAD cofactor
additional information
TEMPERATURE STABILITY
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
52
-
the recombinant enzyme has a half-life of 20 min at 52°C, in the presence of excess FAD the half-life at 52°C is increased to 115 min
STORAGE STABILITY
ORGANISM
UNIPROT
LITERATURE
-80°C, 50 mM sodium phosphate and 300 mM NaCl (pH 7.4), more than 12 months, 30-50% loss of activity
-
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
crude membrane extracts from Arabidopsis thaliana leaves and roots are prepared
Ni-NTA agarose column chromatography and Q-Sepharose column chromatography
-
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
gene GLDH, quantitative real-time RT-PCR enzyme expression analysis
into a pET-His6 vector for expression in Escherichia coli BL21DE3 cells
expressed in Escherichia coli BL21(DE3) cells
-
for expression in Escherichia coli BL21DE3 cells
-
EXPRESSION
ORGANISM
UNIPROT
LITERATURE
relative mRNA expression levels of galactono-1,4-lactone dehydrogenase shows no difference between wild type and ppr40-1 mutant plants
-
APPLICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
-
despite limitations on L-GalL synthesis by regulation of early steps in the ascorbic acid synthesis pathway, the regulation of L-GalLDH activity via the interaction of light and respiratory controls is a crucial determinant of the overall ability of leaves to produce and accumulate ascorbic acid
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Tamaoki, M.; Mukai, F.; Asai, N.; Nakajima, N.; Kubo, A.; Aono, M.; Saji, H.
Light-controlled expression of a gene encoding L-galactono-gamma-lactone dehydrogenase which affects ascorbate pool size in Arabidopsis thaliana
Plant Sci.
164
1111-1117
2003
Arabidopsis thaliana
-
Manually annotated by BRENDA team
Bartoli, C.G.; Yu, J.; Gomez, F.; Fernandez, L.; McIntosh, L.; Foyer, C.H.
Inter-relationships between light and respiration in the control of ascorbic acid synthesis and accumulation in Arabidopsis thaliana leaves
J. Exp. Bot.
57
1621-1631
2006
Arabidopsis thaliana
Manually annotated by BRENDA team
Leferink, N.G.; van den Berg, W.A.; van Berkel, W.J.
L-galactono-gamma-lactone dehydrogenase from Arabidopsis thaliana, a flavoprotein involved in vitamin C biosynthesis
FEBS J.
275
713-726
2008
Arabidopsis thaliana
Manually annotated by BRENDA team
Yabuta, Y.; Mieda, T.; Rapolu, M.; Nakamura, A.; Motoki, T.; Maruta, T.; Yoshimura, K.; Ishikawa, T.; Shigeoka, S.
Light regulation of ascorbate biosynthesis is dependent on the photosynthetic electron transport chain but independent of sugars in Arabidopsis
J. Exp. Bot.
58
2661-2671
2007
Arabidopsis thaliana
Manually annotated by BRENDA team
Leferink, N.G.; Jose, M.D.; van den Berg, W.A.; van Berkel, W.J.
Functional assignment of Glu386 and Arg388 in the active site of L-galactono-gamma-lactone dehydrogenase
FEBS Lett.
583
3199-3203
2009
Arabidopsis thaliana
Manually annotated by BRENDA team
Pineau, B.; Layoune, O.; Danon, A.; De Paepe, R.
L-galactono-1,4-lactone dehydrogenase is required for the accumulation of plant respiratory complex I
J. Biol. Chem.
283
32500-32505
2008
Arabidopsis thaliana (Q9SU56), Arabidopsis thaliana, Nicotiana sylvestris
Manually annotated by BRENDA team
Leferink, N.G.; van Duijn, E.; Barendregt, A.; Heck, A.J.; van Berkel, W.J.
Galactonolactone dehydrogenase requires a redox-sensitive thiol for optimal production of vitamin C
Plant Physiol.
150
596-605
2009
Arabidopsis thaliana (Q9SU56), Arabidopsis thaliana
Manually annotated by BRENDA team
Hervas, M.; Bashir, Q.; Leferink, N.G.; Ferreira, P.; Moreno-Beltran, B.; Westphal, A.H.; Diaz-Moreno, I.; Medina, M.; de la Rosa, M.A.; Ubbink, M.; Navarro, J.A.; van Berkel, W.J.
Communication between (L)-galactono-1,4-lactone dehydrogenase and cytochrome c
FEBS J.
280
1830-1840
2013
Arabidopsis thaliana
Manually annotated by BRENDA team
Schertl, P.; Sunderhaus, S.; Klodmann, J.; Grozeff, G.E.; Bartoli, C.G.; Braun, H.P.
L-galactono-1,4-lactone dehydrogenase (GLDH) forms part of three subcomplexes of mitochondrial complex I in Arabidopsis thaliana
J. Biol. Chem.
287
14412-14419
2012
Arabidopsis thaliana
Manually annotated by BRENDA team
Zsigmond, L.; Tomasskovics, B.; Deak, V.; Rigo, G.; Szabados, L.; Banhegyi, G.; Szarka, A.
Enhanced activity of galactono-1,4-lactone dehydrogenase and ascorbate-glutathione cycle in mitochondria from complex III deficient Arabidopsis
Plant Physiol. Biochem.
49
809-815
2011
Arabidopsis thaliana
Manually annotated by BRENDA team
Li, B.; Yang, Y.; Yu, C.; Li, S.; Chen, J.; Liu, X.; Qin, H.; Wang, D.
Partial suppression of L-galactono-1,4-lactone dehydrogenase causes significant reduction in leaf water loss through decreasing stomatal aperture size in Arabidopsis
Plant Growth Regul.
72
171-179
2014
Arabidopsis thaliana (Q9SU56), Arabidopsis thaliana Col-0 (Q9SU56)
-
Manually annotated by BRENDA team
Schimmeyer, J.; Bock, R.; Meyer, E.H.
L-Galactono-1,4-lactone dehydrogenase is an assembly factor of the membrane arm of mitochondrial complex I in Arabidopsis
Plant Mol. Biol.
90
117-126
2016
Arabidopsis thaliana (Q9SU56), Arabidopsis thaliana Col-0 (Q9SU56)
Manually annotated by BRENDA team
Zheng, X.; Zhang, X.; Wang, Y.; Cai, M.; Li, M.; Zhang, T.; Peng, C.
Identification of a GLDH-overexpressing arabidopsis mutant and its responses to high-light stress
Photosynthetica
57
332-341
2019
Arabidopsis thaliana
-
Manually annotated by BRENDA team