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Information on EC 1.8.4.9 - adenylyl-sulfate reductase (glutathione) and Organism(s) Arabidopsis thaliana and UniProt Accession P92979

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IUBMB Comments
This enzyme differs from EC 1.8.99.2, adenylyl-sulfate reductase, in using glutathione as the reductant. Glutathione can be replaced by gamma-glutamylcysteine or dithiothreitol, but not by thioredoxin, glutaredoxin or 2-sulfanylethan-1-ol (2-mercaptoethanol). The enzyme from the mouseear cress, Arabidopsis thaliana, contains a glutaredoxin-like domain. The enzyme is also found in other photosynthetic eukaryotes, e.g., the Madagascar periwinkle, Catharanthus roseus and the hollow green seaweed, Ulva intestinalis.
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Arabidopsis thaliana
UNIPROT: P92979
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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, Archaea, Bacteria
Synonyms
adenosine-5'-phosphosulfate reductase, apr1p, adenosine-5'-phosphosulphate reductase, adenosine 5-phosphosulfate reductase, eiapr, ppapr-b, atapr1, prh-19, prh-26, prh-43, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
5'-adenylylsulfate reductase
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adenosine 5'-phosphosulfate reductase
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plant-type 5'-adenylylsulfate reductase
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3'-phosphoadenosine-5'-phosphosulfate reductase homolog 19
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3'-phosphoadenosine-5'-phosphosulfate reductase homolog 26
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-
-
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3'-phosphoadenosine-5'-phosphosulfate reductase homolog 43
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5'-adenylylsulfate reductase
adenosine 5-phosphosulfate reductase
-
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adenosine-5'-phosphosulphate reductase
-
-
APS reductase
PAPS reductase homolog 19
-
-
-
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PAPS reductase homolog 26
-
-
-
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PAPS reductase homolog 43
-
-
-
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plant-type 5'-adenylylsulfate reductase
-
-
-
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Prh-19
-
-
-
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Prh-26
-
-
-
-
Prh-43
-
-
-
-
additional information
enzyme belongs to the thioredoxin superfamily
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
redox reaction
-
-
-
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oxidation
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-
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reduction
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SYSTEMATIC NAME
IUBMB Comments
AMP,sulfite:glutathione-disulfide oxidoreductase (adenosine-5'-phosphosulfate-forming)
This enzyme differs from EC 1.8.99.2, adenylyl-sulfate reductase, in using glutathione as the reductant. Glutathione can be replaced by gamma-glutamylcysteine or dithiothreitol, but not by thioredoxin, glutaredoxin or 2-sulfanylethan-1-ol (2-mercaptoethanol). The enzyme from the mouseear cress, Arabidopsis thaliana, contains a glutaredoxin-like domain. The enzyme is also found in other photosynthetic eukaryotes, e.g., the Madagascar periwinkle, Catharanthus roseus and the hollow green seaweed, Ulva intestinalis.
CAS REGISTRY NUMBER
COMMENTARY hide
9027-75-2
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SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
5'-adenylyl sulfate + glutathione
AMP + sulfite + glutathione disulfide
show the reaction diagram
catalyzed by the holoenzyme APR1p, not by the C-domain
-
-
?
AMP + sulfite + glutathione disulfide
adenylyl sulfate + 2 glutathione
show the reaction diagram
-
-
-
?
cystine + glutathione
cysteine + glutathione disulfide
show the reaction diagram
catalyzed by the holoenzyme APR1p and the C-domain
-
-
?
dehydroascorbate + glutathione
ascorbate + glutathione disulfide
show the reaction diagram
catalyzed by the holoenzyme APR1p and the C-domain
-
-
?
hydroxyethyldisulfide + glutathione
?
show the reaction diagram
catalyzed by the holoenzyme APR1p and the C-domain
-
-
?
insulin disulfide + glutathione
insulin + glutathione disulfide
show the reaction diagram
catalyzed by the C-domain, not by the holoenzyme APR1p or the R-domain
-
-
?
oxidized ribonucleotide reductase + glutathione
reduced ribonucleotide reductase + glutathione disulfide
show the reaction diagram
catalyzed by the C-domain, not by the holoenzyme APR1p or the R-domain
-
-
?
3'-phosphoadenosine-5'-phosphosulfate + glutathione
adenosine 3',5'-diphosphate + sulfite + oxidized glutathione
show the reaction diagram
5'-adenylyl sulfate + glutathione
AMP + sulfite + glutathione disulfide
show the reaction diagram
5'-adenylylsulfate + dithiothreitol
adenosine 5'-monophosphate + sulfite + oxidized dithiothreitol
show the reaction diagram
-
-
-
-
?
5'-adenylylsulfate + glutathione
adenosine monophosphate + sulfite + oxidized glutathione
show the reaction diagram
-
-
-
-
?
adenylyl sulfate + 2 glutathione
AMP + sulfite + glutathione disulfide
show the reaction diagram
adenylyl sulfate + glutathione
AMP + sulfite + glutathione disulfide
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
AMP + sulfite + glutathione disulfide
adenylyl sulfate + 2 glutathione
show the reaction diagram
-
-
-
?
5'-adenylyl sulfate + glutathione
AMP + sulfite + glutathione disulfide
show the reaction diagram
-
enzyme is involved in reductive sulfate assimilation, pathway overview
-
-
?
adenylyl sulfate + 2 glutathione
AMP + sulfite + glutathione disulfide
show the reaction diagram
adenylyl sulfate + glutathione
AMP + sulfite + glutathione disulfide
show the reaction diagram
-
-
-
-
?
additional information
?
-
COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
glutathione
dependent on, specific cofactor for the carboxyterminal glutathione-dependent reductase domain of the enzyme, can be exchanged for equally active DTT, glutathione is slightly inhibitory at high concentrations
additional information
-
METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
NaCl
-
all three APR isoforms increased 3fold in roots after 5 h of treatment with 150 mM NaCl, regulation of salt stress by plant hormone signalling, overview
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
glutathione
slightly inhibitory at high concentrations
adenosine-5'-phosphate
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-
ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
(NH4)2SO4
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less effective than Na2SO4
DTT
-
DTT can replace glutathione as reductant, 5 mM DTT increases activity 40fold
additional information
-
feeding of O-acetylserine leads to increased accumulation of sulfite and thiosulfate in wild-type plants
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KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.6 - 1.15
glutathione
additional information
additional information
thermodynamic parameters for binding of AtAPR1 redox domain to GSH or GSSG
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SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
0.000002
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with 3'-phosphoadenosine 5'-phosphosulfate as substrate and 5 mM DTT, recombinant protein expressed in Escherichia coli
0.000007
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with 3'-phosphoadenosine 5'-phosphosulfate as substrate and 5 mM DTT, recombinant protein expressed in Escherichia coli
0.00022
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with 5'-adenylylsulfate as substrate and 5 mM DTT, recombinant protein expressed in Escherichia coli
0.00059
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with 5'-adenylylsulfate as substrate and 5 mM DTT, recombinant protein expressed in Escherichia coli
0.00077
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wild-type plants
0.0013
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crude cell lysate from young leaves
0.0023 - 0.006
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transgenic plants with the recombinant Pseudomonas aeruginosa enzyme utilizing thioredoxin
0.013
-
after purification of His-tagged protein with Nickel-affinity chromatography
additional information
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
8.5
-
recombinant protein, expressed in Escherichia coli
pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
TEMPERATURE RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
malfunction
a C-terminal truncated plant-type APR lacking the redox domain losses APR activity but recovers the function after the addition of thioredoxin
metabolism
in contrast to the cooperation of a sulfonucleotide reductase and a thioredoxin in prokaryote systems, in plants, the protein involved in the pathway is only a single polypeptide which consists of two distinct domains: a sulfonucleotide reductase-like one and a thioredoxin-like one
physiological function
adenosine 5'-phosphosulfate (APS) reductase (APR) plays a vital role in catalyzing the reduction of activated sulfate to sulfite, which requires glutathione. APR activity is downregulated to avoid tissue injury by a negative feedback regulation, a mechanism associated with metabolic changes that cause reduced GSH concentration and the accumulation of sulfate
malfunction
transgenic plants overexpressing APR2 show improved Cd tolerance, whereas knockout of APR2 have reduced Cd tolerance. APR2-overexpressing plants with increased Cd accumulation and tolerance show higher glutathione (GSH) and phytochelatin (PC) levels than the wild-type and apr2 mutant plants, but lower H2O2 and TBARS contents upon Cd exposure. Moreover, exogenous GSH application effectively rescued Cd hypersensitivity in APR2-knockout plants. Further analysis showed that buthionine sulfoximine (BSO, an inhibitor of GSH synthesis) treatment completely eliminated the enhanced Cd tolerance phenotypes of APR2-overexpressing plants, implying that APR2-mediated enhanced Cd tolerance is GSH-dependent. In addition, overexpression of the APR2 leads to elevated expressions of the GSH/PC synthesis related genes under Cd stress
metabolism
in Arabidopsis there are three isoenzymes of APR (APR1, 2, and 3), of which APR2 is the major one in the sulfate reduction. Isozyme APR2 positively regulates cadmium tolerance through glutathione-dependent pathway
physiological function
additional information
the C-terminal domain of APR acts as a glutathione-dependent reductase. The crystal structure of the C-terminal redox domain of Arabidopsis APR1 (AtAPR1) shows a conserved alpha/beta thioredoxin fold, but not a glutaredoxin fold, crystal structure analysis, folding of the AtAPR1 redox domain is measured by circular dichroism (CD) spectroscopy, overview. The C-terminal redox domain of APR is more similar to thioredoxin than glutaredoxin. Molecular model of AtAPR1 redox domain in complex with GSH, structure modeling, overview
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
APR1_ARATH
465
0
51714
Swiss-Prot
Chloroplast (Reliability: 1)
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
13000
recombinant detagged monomeric form of the AtAPR1 redox domain, gel filtration
43000
-
mature protein without chloroplast transit peptide, calculated from cDNA sequence
45600
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clone APR2, calculated from cDNA sequence
47300
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clone APR3, calculated from cDNA sequence
50450
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clone Prh-43, calculated from cDNA sequence
50500
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clone Prh-26, calculated from cDNA sequence
50800
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clone APR1, calculated from cDNA sequence
51300
-
clone Prh-19, calculated from cDNA sequence
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
CRYSTALLIZATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
purified recombinant detagged C-terminal redox domain of AtAPR1, sitting drop vapor diffusion method, crystallization from 100 mM Tris, pH 7.0, 1.0 M sodium citrate, and 200 mM sodium chloride, at 10°C, 1 week, X-ray diffraction structure determination and analysis at 2.70 A resolution, structure modeling via molecular replacement method using the J-Trx1 fragment of protein disulfide reductase ERdj5 from Mus musculus (PDB entry 3APQ), as the template
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
TEMPERATURE STABILITY
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
thermal denaturation of the AtAPR1 redox domain presents a highly thermoreversible property, melting temperature can be roughly estimated as 55°C. The secondary structure of the redox domain is greatly distorted on heating to 55°C by estimating from a series of CD spectra at various temperatures. The CD spectra for the AtAPR1 redox domain, which is 95°C thermal-denatured followed by cooling to 25°C, is almost identical to that of the native AtAPR1 redox domain measured at 25°C. This indicates that thermal denaturation of the redox domain is reversible
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
recombinant holoenzyme APR1p, C-domain, and R-domain from Escherichia coli strain BL21(DE3)
recombinant N-terminally GST-tagged C-terminal redox domain of AtAPR1 from Escherichia coli strain BL21(DE3) by glutahione affinity chromatography, the tag is cleaved off by thrombin, followed by gel filtration
purification of recombinant 6xHis-tagged protein with Nickel-affinity chromatography
-
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
gene APR1, expression of the holoenzyme APR1p in Escherichia coli strain BL21(DE3), separate expression in Escherichia coli strain BL21(DE3) of amino acid residues 73-327, forming the R-domain, and of residues 328-465, forming the C-domain, the domains alone are inactive, but mixing of both can partially restore activity
recombinant expression of N-terminally GST-tagged C-terminal redox domain (amino acids 353-461) of AtAPR1 in Escherichia coli strain BL21(DE3)
gene APR2, quantitative real-time PCR isozyme expression analysis, analysis of transcript profiles of APR genes in Arabidopsis plants under Cd stress, changes in transcript levels of APR1, APR2, and APR3 at various time points in response to Cd exposure in Arabidopsis thaliana plants, overview. Transgenic overexpression of APR2 in Arabidopsis thaliana plants by Agrobacterium tumefaciens strain GV3101 transfection method
EXPRESSION
ORGANISM
UNIPROT
LITERATURE
analysis of transcript profiles of APR genes in Arabidopsis plants under Cd stress, changes in transcript levels of APR1, APR2, and APR3 at various time points in response to Cd exposure in Arabidopsis thaliana plants, overview
expression of isoforms APR1, APR2 and APR3 is strongly induced by glucose treatment
APPLICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
environmental protection
APR2 can be exploited for engineering heavy metal-tolerant plants in phytoremediation
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Setya, A.; Murillo, M.; Leustek, T.
Sulfate reduction in higher plants: Molecular evidence for a novel 5'-adenylylsulfate reductase
Proc. Natl. Acad. Sci. USA
93
13383-13388
1996
Arabidopsis thaliana
Manually annotated by BRENDA team
Gutierrez-Marcos, J.F.; Roberts, M.A.; Campbell, E.I.; Wray, J.L.
Three members of a novel small gene-family from Arabidopsis thaliana able to complement functionally an Escherichia coli mutant defective in PAPS reductase activity encode proteins with a thioredoxin-like domain and "APS reductase" activity
Proc. Natl. Acad. Sci. USA
93
13377-13382
1996
Arabidopsis thaliana
Manually annotated by BRENDA team
Gao, Y.; Schofield, O.M.E.; Leustek, T.
Characterization of sulfate assimilation in marine algae focusing on the enzyme 5'-adenylylsulfate reductase
Plant Physiol.
123
1087-1096
2000
Arabidopsis thaliana, Brassica juncea, Conticribra weissflogii, Dunaliella salina, Emiliania huxleyi, Heterocapsa triquetra, Isochrysis galbana, Tetraselmis sp., Thalassiosira oceanica, Ulva intestinalis
Manually annotated by BRENDA team
Tsakraklides, G.; Martin, M.; Chalam, R.; Tarczynski, M.C.; Schmidt, A.; Leustek, T.
Sulfate reduction is increased in transgenic Arabidopsis thaliana expressing 5'-adenylylsulfate reductase from Pseudomonas aeruginosa
Plant J.
32
879-889
2002
Arabidopsis thaliana, Pseudomonas aeruginosa
Manually annotated by BRENDA team
Bick, J.A.; Aeslund, F.; Chen, Y.; Leustek, T.
Glutaredoxin function for the carboxyl-terminal domain of the plant-type 5'-adenylylsulfate reductase
Proc. Natl. Acad. Sci. USA
95
8404-8409
1998
Arabidopsis thaliana (P92979), Arabidopsis thaliana
Manually annotated by BRENDA team
Koprivova, A.; North, K.A.; Kopriva, S.
Complex signaling network in regulation of adenosine 5-phosphosulfate reductase by salt stress in Arabidopsis roots
Plant Physiol.
146
1408-1420
2008
Arabidopsis thaliana
Manually annotated by BRENDA team
Chung, J.; Lee, H.; Leustek, T.; Knaff, D.; Kim, C.
The Arabidopsis thaliana adenosine 5'-phosphosulfate reductase 2 (AtAPR2) participates in flowering time and glucose response
J. Plant Biol.
58
128-136
2015
Arabidopsis thaliana (P92981)
-
Manually annotated by BRENDA team
Chen, F.F.; Chien, C.Y.; Cho, C.C.; Chang, Y.Y.; Hsu, C.H.
C-terminal redox domain of Arabidopsis APR1 is a non-canonical thioredoxin domain with glutaredoxin function
Antioxidants (Basel)
8
461
2019
Arabidopsis thaliana (P92979)
Manually annotated by BRENDA team
Xu, Z.; Wang, M.; Xu, D.; Xia, Z.
The Arabidopsis APR2 positively regulates cadmium tolerance through glutathione-dependent pathway
Ecotoxicol. Environ. Saf.
187
109819
2020
Arabidopsis thaliana (P92981), Arabidopsis thaliana Col-0 (P92981)
Manually annotated by BRENDA team
Bekturova, A.; Oshanova, D.; Tiwari, P.; Nurbekova, Z.; Kurmanbayeva, A.; Soltabayeva, A.; Yarmolinsky, D.; Srivastava, S.; Tureckova, V.; Strnad, M.; Sagi, M.
Adenosine 5' phosphosulfate reductase and sulfite oxidase regulate sulfite-induced water loss in Arabidopsis
J. Exp. Bot.
72
6447-6466
2021
Arabidopsis thaliana, Arabidopsis thaliana Col-0
Manually annotated by BRENDA team