Any feedback?
Please rate this page
(enzyme.php)
(0/150)

BRENDA support

BRENDA Home
show all | hide all No of entries

Information on EC 1.8.1.9 - thioredoxin-disulfide reductase and Organism(s) Arabidopsis thaliana and UniProt Accession Q39242

for references in articles please use BRENDA:EC1.8.1.9
Please wait a moment until all data is loaded. This message will disappear when all data is loaded.
EC Tree
IUBMB Comments
A flavoprotein (FAD).
Specify your search results
Select one or more organisms in this record: ?
This record set is specific for:
Arabidopsis thaliana
UNIPROT: Q39242
Show additional data
Do not include text mining results
Include (text mining) results
Include results (AMENDA + additional results, but less precise)
Word Map
The taxonomic range for the selected organisms is: Arabidopsis thaliana
The enzyme appears in selected viruses and cellular organisms
Synonyms
thioredoxin reductase, trxr, trxr1, txnrd1, thioredoxin reductase 1, trxr2, txnrd2, thioredoxin reductase-1, thioredoxin reductase 2, nadph-dependent thioredoxin reductase, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
NADPH-dependent thioredoxin reductase
-
general stress protein 35
-
-
-
-
GSP35
-
-
-
-
NADP-thioredoxin reductase
-
-
-
-
NADPH thioredoxin reductase C
NADPH-dependent thioredoxin reductase
NADPH-dependent thioredoxin reductase C
-
-
NADPH-dependent TRX reductase
-
NADPH-thioredoxin reductase
NADPH2:oxidized thioredoxin oxidoreductase
-
-
-
-
reductase, thioredoxin
-
-
-
-
thioredoxin reductase (NADPH)
-
-
-
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
redox reaction
-
-
-
-
oxidation
-
-
-
-
reduction
-
-
-
-
PATHWAY SOURCE
PATHWAYS
-
-
SYSTEMATIC NAME
IUBMB Comments
thioredoxin:NADP+ oxidoreductase
A flavoprotein (FAD).
CAS REGISTRY NUMBER
COMMENTARY hide
9074-14-0
-
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
2-Cys peroxiredoxin + NADH
?
show the reaction diagram
-
NADH is a poor electron donor for NTRC activity
-
-
?
2-Cys peroxiredoxin + NADPH
?
show the reaction diagram
-
NTRC is able to conjugate NADPH thioredoxin reductase and thioredoxin activities for the efficient reduction of 2-Cys peroxiredoxin
-
-
?
2-Cys peroxiredoxin A + NADPH
?
show the reaction diagram
-
-
-
-
?
2-Cys peroxiredoxin B + NADPH
?
show the reaction diagram
-
-
-
-
?
Arabidopsis thaliana thioredoxin 3 + NADP+
Arabidopsis thaliana thioredoxin 3 disulfide + NADPH + H+
show the reaction diagram
-
-
-
?
CHLI-1 ATPase + NADPH + H+
CHLI-1 ATPase disulfide + NADP+
show the reaction diagram
-
-
-
?
Escherichia coli thioredoxin + NADP+
Escherichia coli thioredoxin disulfide + NADPH + H+
show the reaction diagram
-
-
-
?
Hordeum vulgare thioredoxin 2 + NADP+
Hordeum vulgare thioredoxin 2 disulfide + NADPH + H+
show the reaction diagram
-
-
-
?
Hordeum vulgare thioredoxin 2 mutant G47P + NADP+
Hordeum vulgare thioredoxin 2 mutant G47P disulfide + NADPH + H+
show the reaction diagram
-
-
-
?
Hordeum vulgare thioredoxin 2 mutant I51G + NADP+
Hordeum vulgare thioredoxin 2 mutant I51G disulfide + NADPH + H+
show the reaction diagram
-
-
-
?
thioredoxin + NADP+
thioredoxin disulfide + NADPH
show the reaction diagram
-
-
-
-
?
thioredoxin + NADP+
thioredoxin disulfide + NADPH + H+
show the reaction diagram
thioredoxin disulfide + NADPH + H+
thioredoxin + NADP+
show the reaction diagram
-
-
-
-
?
additional information
?
-
-
plants of the ntra ntrb knockout mutant are viable and fertile, although with a wrinkled seed phenotype, slower plant growth, and pollen with reduced fitness. Neither cytosolic nor mitochondrial NADPH-dependent thioredoxin reductases are essential in plants
-
-
?
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
thioredoxin + NADP+
thioredoxin disulfide + NADPH + H+
show the reaction diagram
-
-
-
r
thioredoxin disulfide + NADPH + H+
thioredoxin + NADP+
show the reaction diagram
-
-
-
-
?
additional information
?
-
-
plants of the ntra ntrb knockout mutant are viable and fertile, although with a wrinkled seed phenotype, slower plant growth, and pollen with reduced fitness. Neither cytosolic nor mitochondrial NADPH-dependent thioredoxin reductases are essential in plants
-
-
?
ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
cysteine
-
part of the active site
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.00048
Arabidopsis thaliana thioredoxin 3
pH 7.5, temperature not specified in the publication
-
0.06
Hordeum vulgare thioredoxin 2
pH 7.5, temperature not specified in the publication
-
0.0011
thioredoxin
-
recombinant enzyme
additional information
additional information
-
additionally to the Arabidopsis thaliana thioredoxin, several other thioredoxins have been tested, Km-values
-
TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
5.9
Arabidopsis thaliana thioredoxin 3
pH 7.5, temperature not specified in the publication
-
8.5
Hordeum vulgare thioredoxin 2
pH 7.5, temperature not specified in the publication
-
kcat/KM VALUE [1/mMs-1]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
12300
Arabidopsis thaliana thioredoxin 3
pH 7.5, temperature not specified in the publication
-
140
Hordeum vulgare thioredoxin 2
pH 7.5, temperature not specified in the publication
-
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
AtNTRB
SwissProt
Manually annotated by BRENDA team
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
malfunction
metabolism
regulation of enzyme activity based on thiol-disulfide exchange is a regulatory mechanism in which the protein disulfide reductase activity of thioredoxins (TRXs) plays a central role. Plant chloroplasts are equipped with a complex set of up to 20 TRXs and TRX-like proteins, the activity of which is supported by reducing power provided by photosynthetically reduced ferredoxin (FDX) with the participation of a FDX-dependent TRX reductase (FTR). Therefore, the FDX-FTR-TRXs pathway allows the regulation of redox-sensitive chloroplast enzymes in response to light. In addition, chloroplasts contain an NADPH-dependent redox system, termed NTRC, which allows the use of NADPH in the redox network of these organelles. The NTRC gene encodes a polypeptide containing both NTR and TRX domains. NTRC is unique to oxygenic photosynthetic organisms. Both redox systems, NTRC and FDX-FTR-TRXs, participate in fine-tuning chloroplast performance in response to changes in light intensity. Participation of 2-Cys peroxiredoxin (2-Cys PRX), a thiol-dependent peroxidase, in the control of the reducing activity of chloroplast TRXs as well as in the rapid oxidation of stromal enzymes upon darkness. Analysis of relationship of 2-Cys PRXs with NTRC and the FDX-FTR-TRXs redox systems for fine-tuning chloroplast performance in response to changes in light intensity and darkness, overview. The activity of thiol-dependent peroxidases (TPXs) relies on the disulfide reductase activity of NTRC, TRXs, and glutaredoxins (GRXs)
physiological function
additional information
NTRC can be considered as a TRX that bears its own NTR, which might explain the high catalytic efficiency of the enzyme. The catalytically active form of NTRC is a homodimer arranged in a head-to-tail conformation, which interacts with 2-Cys PRXs through the TRX domain with high affinity for NADPH
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
TRXB2_ARATH
383
0
40635
Swiss-Prot
Chloroplast (Reliability: 5)
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
153000
-
low-molecular-mass form of NTRC observed in the presence of NADPH or dithiothreitol, gel filtration
180000
-
tetrameric catalytically inactive form of NTRC, gel filtration
52000
-
2 * 52000, calculated from amino acid sequence
52200
-
subunit, calculated from amino acid sequence
60000
-
SDS-PAGE
78000
-
dimeric catalytically active form of NTRC, gel filtration
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
dimer
homodimer
NTRC can be considered as a TRX that bears its own NTR, the catalytically active form of NTRC is a homodimer arranged in a head-to-tail conformation
CRYSTALLIZATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
modeling of the structure of the NtrC dimer, extensive interactions between the Ntr domains and the Trx domains may stabilize the dimeric structure. A long linker region between the Ntr domain and Trx domain allows flexibility for the position of the Trx domain in the dimer
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
A164G/R183F
-
the mutant shows reduced activity but is still able to dimerize though with an increase in intermediary forms
A164G/V182E
-
the mutant shows increased activity compared to the wild type enzyme
A164G/V182E/R183F
-
the mutant shows reduced activity compared to the wild type enzyme but is still able to dimerize though with an increase in intermediary forms
C140S
no activity with substrate CHLI-1 ATPase
TEMPERATURE STABILITY
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
60
-
5 min, active
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
recombinant from Escherichia coli
-
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
expression of NTRC enzyme tagged at the C-terminus with nine copies of the myc epitope (9×myc), six histidine residues (6×His), a 3C protease cleavage site (3C), and two copies of the protein A IgG-binding domain
strong overexpression in Escherichia coli, DNA sequence analysis
-
EXPRESSION
ORGANISM
UNIPROT
LITERATURE
expression is affected by alternative splicing resulting in a transcript with premature stop codon, which would produce a truncated form of the enzyme. The standard splicing/alternative splicing (SS/AS) transcripts ratio is higher in photosynthetic tissues from Arabidopsis thaliana, Brachypodium distachyon and Solanum lycopersicum, in line with the higher content of the NtrC polypeptide in these tissues
methyl viologen treatment leads to 2fold induction of transcript expression
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Jacquot, J.P.; Rivera-Madrid, R.; Marinho, P.; Kollarova, M.; Le Marechal, P.; Miginiac-Maslow, M.; Meyer, Y.
Arabidopsis thaliana NADPH thioredoxin reductase. cDNA characterization and expression of the recombinant protein in Escherichia coli
J. Mol. Biol.
235
1357-1363
1994
Arabidopsis thaliana
Manually annotated by BRENDA team
Reichheld, J.P.; Meyer, E.; Khafif, M.; Bonnard, G.; Meyer, Y.
AtNTRB is the major mitochondrial thioredoxin reductase in Arabidopsis thaliana
FEBS Lett.
579
337-342
2005
Arabidopsis thaliana (Q39242), Arabidopsis thaliana (Q39243), Arabidopsis thaliana
Manually annotated by BRENDA team
Reichheld, J.P.; Khafif, M.; Riondet, C.; Droux, M.; Bonnard, G.; Meyer, Y.
Inactivation of thioredoxin reductases reveals a complex interplay between thioredoxin and glutathione pathways in Arabidopsis development
Plant Cell
19
1851-1865
2007
Arabidopsis thaliana
Manually annotated by BRENDA team
Kirchsteiger, K.; Pulido, P.; Gonzalez, M.; Cejudo, F.J.
NADPH thioredoxin reductase C controls the redox status of chloroplast 2-Cys peroxiredoxins in Arabidopsis thaliana
Mol. Plant
2
298-307
2009
Arabidopsis thaliana
Manually annotated by BRENDA team
Perez-Ruiz, J.M.; Gonzalez, M.; Spinola, M.C.; Sandalio, L.M.; Cejudo, F.J.
The quaternary structure of NADPH thioredoxin reductase C is redox-sensitive
Mol. Plant
2
457-467
2009
Arabidopsis thaliana
Manually annotated by BRENDA team
Lepistoe, A.; Kangasjaervi, S.; Luomala, E.M.; Brader, G.; Sipari, N.; Keraenen, M.; Keinaenen, M.; Rintamaeki, E.
Chloroplast NADPH-thioredoxin reductase interacts with photoperiodic development in Arabidopsis
Plant Physiol.
149
1261-1276
2009
Arabidopsis thaliana, Arabidopsis thaliana ecotype Col-0
Manually annotated by BRENDA team
Jacquot, J.P.; Eklund, H.; Rouhier, N.; Schuermann, P.
Structural and evolutionary aspects of thioredoxin reductases in photosynthetic organisms
Trends Plant Sci.
14
336-343
2009
Arabidopsis thaliana
Manually annotated by BRENDA team
Moon, J.C.; Lee, S.; Shin, S.Y.; Chae, H.B.; Jung, Y.J.; Jung, H.S.; Lee, K.O.; Lee, J.R.; Lee, S.Y.
Overexpression of Arabidopsis NADPH-dependent thioredoxin reductase C (AtNTRC) confers freezing and cold shock tolerance to plants
Biochem. Biophys. Res. Commun.
463
1225-1229
2015
Arabidopsis thaliana (O22229), Arabidopsis thaliana
Manually annotated by BRENDA team
Toivola, J.; Nikkanen, L.; Dahlstroem, K.M.; Salminen, T.A.; Lepistoe, A.; Vignols, H.F.; Rintamaeki, E.
Overexpression of chloroplast NADPH-dependent thioredoxin reductase in Arabidopsis enhances leaf growth and elucidates in vivo function of reductase and thioredoxin domains
Front. Plant Sci.
4
389
2013
Arabidopsis thaliana (O22229)
Manually annotated by BRENDA team
Puerto-Galan, L.; Perez-Ruiz, J.M.; Guinea, M.; Cejudo, F.J.
The contribution of NADPH thioredoxin reductase C (NTRC) and sulfiredoxin to 2-Cys peroxiredoxin overoxidation in Arabidopsis thaliana chloroplasts
J. Exp. Bot.
66
2957-2966
2015
Arabidopsis thaliana (O22229), Arabidopsis thaliana
Manually annotated by BRENDA team
Kim, M.; Khaleda, L.; Jung, I.; Kim, J.; Lee, S.; Cha, J.; Kim, W.
Overexpression of chloroplast-localized NADPH-dependent thioredoxin reductase C (NTRC) enhances tolerance to photo-oxidative and drought stresses in Arabidopsis thaliana
J. Plant Biol.
60
175-180
2017
Arabidopsis thaliana (O22229)
-
Manually annotated by BRENDA team
Perez-Ruiz, J.; Guinea, M.; Puerto-Galan, L.; Cejudo, F.
NADPH thioredoxin reductase C is involved in redox regulation of the Mg-chelatase I subunit in Arabidopsis thaliana chloroplasts
Mol. Plant
7
1252-1255
2014
Arabidopsis thaliana (O22229), Arabidopsis thaliana
Manually annotated by BRENDA team
Ishiga, Y.; Ishiga, T.; Ikeda, Y.; Matsuura, T.; Mysore, K.
NADPH-dependent thioredoxin reductase C plays a role in nonhost disease resistance against Pseudomonas syringae pathogens by regulating chloroplast-generated reactive oxygen species
PeerJ
4
e1938
2016
Arabidopsis thaliana (O22229)
Manually annotated by BRENDA team
Naranjo, B.; Mignee, C.; Krieger-Liszkay, A.; Hornero-Mendez, D.; Gallardo-Guerrero, L.; Cejudo, F.J.; Lindahl, M.
The chloroplast NADPH thioredoxin reductase C, NTRC, controls non-photochemical quenching of light energy and photosynthetic electron transport in Arabidopsis
Plant Cell Environ.
39
804-822
2016
Arabidopsis thaliana (O22229), Arabidopsis thaliana
Manually annotated by BRENDA team
Richter, A.S.; Peter, E.; Rothbart, M.; Schlicke, H.; Toivola, J.; Rintamaeki, E.; Grimm, B.
Posttranslational influence of NADPH-dependent thioredoxin reductase C on enzymes in tetrapyrrole synthesis
Plant Physiol.
162
63-73
2013
Arabidopsis thaliana (O22229)
Manually annotated by BRENDA team
Ojeda, V.; Perez-Ruiz, J.M.; Gonzalez, M.; Najera, V.A.; Sahrawy, M.; Serrato, A.J.; Geigenberger, P.; Cejudo, F.J.
NADPH thioredoxin reductase C and thioredoxins act concertedly in seedling development
Plant Physiol.
174
1436-1448
2017
Arabidopsis thaliana (O22229)
Manually annotated by BRENDA team
Najera, V.A.; Gonzalez, M.C.; Perez-Ruiz, J.M.; Cejudo, F.J.
An event of alternative splicing affects the expression of the NTRC gene, encoding NADPH-thioredoxin reductase C, in seed plants
Plant Sci.
258
21-28
2017
Solanum lycopersicum, Brachypodium distachyon (A0A0Q3NCX3), Arabidopsis thaliana (O22229)
Manually annotated by BRENDA team
Kirkensgaard, K.; Hagglund, P.; Shahpiri, A.; Finnie, C.; Henriksen, A.; Svensson, B.
A novel twist on molecular interactions between thioredoxin and nicotinamide adenine dinucleotide phosphate-dependent thioredoxin reductase
Proteins
82
607-619
2014
Hordeum vulgare subsp. vulgare (A9LN30), Arabidopsis thaliana (Q39243), Arabidopsis thaliana
Manually annotated by BRENDA team
Gonzalez, M.; Delgado-Requerey, V.; Ferrandez, J.; Serna, A.; Cejudo, F.J.
Insights into the function of NADPH thioredoxin reductase C (NTRC) based on identification of NTRC-interacting proteins in vivo
J. Exp. Bot.
70
5787-5798
2019
Arabidopsis thaliana (O22229), Arabidopsis thaliana
Manually annotated by BRENDA team
Nikkanen, L.; Guinea Diaz, M.; Toivola, J.; Tiwari, A.; Rintamaeki, E.
Multilevel regulation of non-photochemical quenching andstate transitions by chloroplast NADPH-dependent thioredoxin reductase
Physiol. Plant.
166
211-225
2019
Arabidopsis thaliana (O22229)
Manually annotated by BRENDA team
Nikkanen, L.; Toivola, J.; Trotta, A.; Diaz, M.G.; Tikkanen, M.; Aro, E.M.; Rintamaeki, E.
Regulation of cyclic electron flow by chloroplast NADPH-dependent thioredoxin system
Plant Direct
2
e00093
2018
Arabidopsis thaliana (O22229)
Manually annotated by BRENDA team
Da, Q.; Wang, P.; Wang, M.; Sun, T.; Jin, H.; Liu, B.; Wang, J.; Grimm, B.; Wang, H.B.
Thioredoxin and NADPH-dependent thioredoxin reductase C regulation of tetrapyrrole biosynthesis
Plant Physiol.
175
652-666
2017
Arabidopsis thaliana
Manually annotated by BRENDA team
Cejudo, F.J.; Gonzalez, M.C.; Perez-Ruiz, J.M.
Redox regulation of chloroplast metabolism
Plant Physiol.
186
9-21
2021
Arabidopsis thaliana (O22229)
Manually annotated by BRENDA team