Information on EC 1.8.99.2 - adenylyl-sulfate reductase

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The expected taxonomic range for this enzyme is: Bacteria, Eukaryota, Archaea

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EC NUMBER
COMMENTARY hide
1.8.99.2
-
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RECOMMENDED NAME
GeneOntology No.
adenylyl-sulfate reductase
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REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
AMP + sulfite + acceptor = adenylyl sulfate + reduced acceptor
show the reaction diagram
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REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
oxidation
redox reaction
reduction
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PATHWAY
BRENDA Link
KEGG Link
MetaCyc Link
dissimilatory sulfate reduction I (to hydrogen sufide))
-
-
dissimilatory sulfate reduction II (to thiosulfate)
-
-
sulfite oxidation II
-
-
sulfite oxidation III
-
-
sulfate reduction
-
-
Sulfur metabolism
-
-
Metabolic pathways
-
-
Microbial metabolism in diverse environments
-
-
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SYSTEMATIC NAME
IUBMB Comments
AMP, sulfite:acceptor oxidoreductase (adenosine-5'-phosphosulfate-forming)
An iron flavoprotein (FAD). Methylviologen can act as acceptor.
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CAS REGISTRY NUMBER
COMMENTARY hide
9027-75-2
-
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ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
-
-
-
Manually annotated by BRENDA team
Columbia ecotype
-
-
Manually annotated by BRENDA team
archaebacterium
VC-16
-
-
Manually annotated by BRENDA team
archaebacterium VC-16
VC-16
-
-
Manually annotated by BRENDA team
subunit A and subunit B
O28603, O28604
SwissProt
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
Astragalus tephrosioides
-
-
-
Manually annotated by BRENDA team
precursor
SwissProt
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
DBO1
-
-
Manually annotated by BRENDA team
Burkholderia cepacia DBO1 / ATCC 29424
DBO1
-
-
Manually annotated by BRENDA team
genes aprA and aprB
-
-
Manually annotated by BRENDA team
genes aprA and aprB
-
-
Manually annotated by BRENDA team
genes aprA and aprB
-
-
Manually annotated by BRENDA team
genes aprA and aprB
-
-
Manually annotated by BRENDA team
genes aprA and aprB
-
-
Manually annotated by BRENDA team
genes aprA and aprB
-
-
Manually annotated by BRENDA team
genes aprA and aprB
-
-
Manually annotated by BRENDA team
genes aprA and aprB
-
-
Manually annotated by BRENDA team
Chromatium sp.
weak activity
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
alpha-subunit AprA
UniProt
Manually annotated by BRENDA team
alpha-subunit AprA
UniProt
Manually annotated by BRENDA team
strain DSM 12254
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
alpha subunit and beta subunit
B8PS61, B8DS74
UniProt
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
weak activity
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
genes aprA and aprB
-
-
Manually annotated by BRENDA team
f. sp. thiosulfatophilum
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
-
-
-
Manually annotated by BRENDA team
beta-subunit
A0LH39
UniProt
Manually annotated by BRENDA team
Tetraselmis sp.
-
-
-
Manually annotated by BRENDA team
large subunit AprA and small subunit AprB
F6KEW4, F6KEW3
UniProt
Manually annotated by BRENDA team
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GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
metabolism
-
APS reductase is a key enzyme involved in the pathways of sulfate reduction and sulfide oxidation in the biological sulfur cycle
physiological function
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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'-adenylylsulfate + dithioerythritol
adenosine 5'-monophosphate + sulfite + oxidized dithioerythritol
show the reaction diagram
-
-
-
-
?
5'-adenylylsulfate + dithiothreitol
adenosine 5'-monophosphate + sulfite + oxidized dithiothreitol
show the reaction diagram
adenylyl sulfate + cofactor sulfide
AMP + sulfite + cofactor disulfide
show the reaction diagram
adenylyl sulfate + dithioerythritol
AMP + sulfite + ?
show the reaction diagram
adenylyl sulfate + dithioerythritol
AMP + sulfite + oxidized dithioerythritol
show the reaction diagram
-
-
-
-
?
adenylyl sulfate + dithionite
AMP + sulfite + ?
show the reaction diagram
adenylyl sulfate + dithiothreitol
AMP + sulfite + ?
show the reaction diagram
-
-
-
-
?
adenylyl sulfate + ferrocytochrome c3
AMP + sulfite + ferricytochrome
show the reaction diagram
adenylyl sulfate + GSH
AMP + sulfite + GSSG
show the reaction diagram
adenylyl sulfate + reduced acceptor
AMP + sulfite + acceptor
show the reaction diagram
adenylyl sulfate + reduced glutaredoxin 1
AMP + sulfite + oxidized glutaredoxin 1
show the reaction diagram
-
can use 3'-phosphoadenylyl sulfate as sulfate donor
-
-
?
adenylyl sulfate + reduced methyl viologen
AMP + sulfite + methyl viologen
show the reaction diagram
adenylyl sulfate + reduced thioredoxin
AMP + sulfite + oxidized thioredoxin
show the reaction diagram
adenylyl sulfate + reduced thioredoxin 1
AMP + sulfite + oxidized thioredoxin 1
show the reaction diagram
adenylylsulfate + thioredoxin
AMP + sulfite + ?
show the reaction diagram
-
-
-
-
?
ADP + sulfite + ferricyanide
? + ferrocyanide
show the reaction diagram
AMP + sulfite + acceptor
adenylyl sulfate + reduced acceptor
show the reaction diagram
AMP + sulfite + cytochrome c
adenylyl sulfate + ?
show the reaction diagram
AMP + sulfite + ferricyanide
adenylyl sulfate + ferrocyanide
show the reaction diagram
AMP + sulfite + [Fe(CN)6]3-
adenylyl sulfate + [Fe(CN)6]4-
show the reaction diagram
F6KEW4; F6KEW3;
-
-
-
-
ATP + sulfite + ferricyanide
? + ferrocyanide
show the reaction diagram
CMP + sulfite + cytochrome c
cytidylyl sulfate + ?
show the reaction diagram
-
7% of the activity with AMP
-
-
?
CMP + sulfite + ferricyanide
cytidylyl sulfate + ferrocyanide
show the reaction diagram
dAMP + sulfite + cytochrome c
deoxyadenylyl sulfate + ?
show the reaction diagram
-
80% of the activity with AMP
-
-
?
deoxyAMP + sulfite + ferricyanide
deoxyadenylyl sulfate + ferrocyanide
show the reaction diagram
GMP + sulfite + cytochrome c
guanylyl sulfate + ?
show the reaction diagram
GMP + sulfite + ferricyanide
guanylyl sulfate + ferrocyanide
show the reaction diagram
guanylyl sulfate + reduced methyl viologen
GMP + methyl viologen + sulfite
show the reaction diagram
-
-
-
-
?
IMP + sulfite + cytochrome c
?
show the reaction diagram
-
62% of the activity with AMP
-
-
?
IMP + sulfite + ferricyanide
? + ferrocyanide
show the reaction diagram
UMP + sulfite + cytochrome c
uridylyl sulfate + ?
show the reaction diagram
-
9% of the activity with AMP
-
-
?
UMP + sulfite + ferricyanide
uridylyl sulfate + ferrocyanide
show the reaction diagram
additional information
?
-
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NATURAL SUBSTRATES
NATURAL PRODUCTS
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
adenylyl sulfate + cofactor sulfide
AMP + sulfite + cofactor disulfide
show the reaction diagram
adenylyl sulfate + reduced acceptor
AMP + sulfite + acceptor
show the reaction diagram
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COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
4Fe-4S-center
dihydroriboflavin
-
can donate electrons directly to adenylyl sulfate reductase
FADH2
-
can donate electrons directly to adenylyl sulfate reductase
flavin
FMNH2
-
can donate electrons directly to adenylyl sulfate reductase
heme
-
contains 2 heme groups of cytochrome c characterper mol of enzyme
iron-sulfur centre
-
two [4Fe-4S] clusters are enveloped by cluster-binding motifs
additional information
-
the enzyme contains a [4Fe-4S] cluster cofactor
-
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METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
4Fe-4S cluster
flavoenzyme.The two electrons required for adenylyl sulfate reduction are transferred via two [4Fe-4S] clusters from the surface of the protein to FAD. The large difference in reduction potential of these clusters (-60 mV and -500 mV) can be explained by interactions of the clusters with the protein matrix
Fe2+
-
the enzyme contains a [4Fe-4S] cluster cofactor
Iron-sulfur cluster
iron-sulfur clusters
-
iron-sulfur flavoprotein containing two distinct [4Fe-4S] dusters
additional information
-
stimulation by high ionic strength
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INHIBITORS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
2-[2-(1,2-dicarboxyethylamino)ethylamino]butanedioic acid
O28603; O28604;
-
2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxymethyl)amino]acetic acid
O28603; O28604;
-
3'-phosphoadenosine-5'-phosphate
-
-
cysteine
-
1 mM, significant inhibition
iodoacetamide
NaN3
-
10 mM, no loss of the activity with ferricyanide, 52% loss of the activity with cytochrome c
potassium phosphate
-
inhibits reaction with cytochrome c
Sodium arsenite
-
10 mM, no loss of the activity with ferricyanide, 88% loss of the activity with cytochrome c
additional information
-
inhibitor binding structure, binding energies, dissociation constants, and inhibition mechanisms, overview
-
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ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
2-mercaptoethanol
-
-
buthionine sulfoximine
-
1 mM, 2fold stimulation of activity
menadione
-
stimulates oxidation of ferrocytochrome c3 with adenylyl sulfate and FAD as electron mediator
Na2SO4
NaCl
-
APR activity of all three isoforms increases 3fold in roots after 5 h of treatment with 150 mM NaCl
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KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.011
5'-adenylylsulfate
-
-
0.0065 - 0.25
adenylyl sulfate
0.0025 - 1
AMP
3.1
CMP
-
reaction with cytochrome c
0.021 - 0.033
cytochrome c
0.0002
dithiothreitol
-
-
0.089 - 4.2
ferricyanide
0.022
glutaredoxin 1
-
pH 8 and saturating adenylyl sulfate
-
0.01 - 3
GMP
0.025
guanylyl sulfate
-
-
0.8 - 1.5
IMP
0.015
riboflavin
-
-
0.017 - 2.5
sulfite
2.7 - 8.6
thioredoxin
0.053
thioredoxin 1
-
pH 8 and saturating adenylyl sulfate
4.5
UMP
-
reaction with cytochrome c
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TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
additional information
additional information
-
-
-
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SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
0.0001
-
enzyme reaction is initiated by the addition of crude protein extracts (0.015 mg of protein) and incubated at 30°C for 30 min
0.0003
-
enzyme reaction is initiated by the addition of crude protein extracts (0.015 mg of protein) and incubated at 30°C for 30 min
0.0005
0.0006
-
enzyme reaction is initiated by the addition of crude protein extracts (0.015 mg of protein) and incubated at 30°C for 30 min
0.0013
-
enzyme reaction is initiated by the addition of crude protein extracts (0.015 mg of protein) and incubated at 30°C for 30 min
0.0017
-
enzyme reaction is initiated by the addition of crude protein extracts (0.015 mg of protein) and incubated at 30°C for 30 min
0.011
-
mutant enzyme 342S
0.15
-
mutant enzyme 345S
0.302
-
mutant enzyme C140S, at 30°C in 100 mM Tris-HCl buffer pH 8.0 containing 1 mM EDTA, 5 mM DTT, 0.106 mM thioredoxin from Escherichia coli, and 0.05 mM APS
2.39
archaebacterium
-
-
3.5
-
mutant enzyme C250S
4.6
-
untagged APS reductase using Escherichia coli thioredoxin
5.1
-
His-tagged APS reductase using Escherichia coli thioredoxin
7.248
-
wild type enzyme
10.3
-
wild type enzyme, at 30°C in 100 mM Tris-HCl buffer pH 8.0 containing 1 mM EDTA, 5 mM DTT, 0.106 mM thioredoxin from Escherichia coli, and 0.05 mM APS
30 - 40
-
-
additional information
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pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
7 - 7.5
-
oxidation of methyl viologen
7
-
ferricyanide assay, phosphate buffer
7.7
-
reaction with ferricyanide
8.5
-
reaction with adenylyl sulfate and dithiothreitol
8.8
-
reaction with cytochrome c
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TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
85
archaebacterium
-
-
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TEMPERATURE RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
70 - 90
archaebacterium
-
70°C: about 65% of maximal activity, 90°C: about 90% of maximal activity
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pI VALUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
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SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
-
axenic cell suspension culture
Manually annotated by BRENDA team
-
APS reductase enhances strongly in the shoots of sulfate-deprived plants, and rapidly decreases again upon sulfate re-supply
Manually annotated by BRENDA team
additional information
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LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
-
exclusively located in chloroplast
Manually annotated by BRENDA team
additional information
-
mitochondrial or cytoplasmic localization
-
Manually annotated by BRENDA team
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PDB
SCOP
CATH
UNIPROT
ORGANISM
Archaeoglobus fulgidus (strain ATCC 49558 / VC-16 / DSM 4304 / JCM 9628 / NBRC 100126);
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MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
17100
-
alpha2beta2, 2 * 73300 + 2 * 17100, SDS-PAGE
18000
-
1 * 18000 + 1 * 75000, containing one FAD per molecule and eight iron atoms arranged in two [4Fe-4S] clusters, SDS-PAGE
18500
2 * 80000 + 1 * 18500, alpha2beta structure, SDS-PAGE
25600
-
alpha2beta2, 2 * 67800 + 2 * 25600, smallest catalytic active unit, SDS-PAGE
27000
-
2 * 27000, SDS-PAGE
28350
-
calculated average mass, determined on the elemental composition of the apoprotein plus the components in the metal center, assuming that all cysteines are in reduced form and the metal cluster has an oxidation state of zero
28360
-
calculated from amino acid sequence
28513
-
1 * 28513, analytical ultracentrifugation
28560
-
calculated from amino acid sequence
30470
-
MALDI-TOF mass spectrometry, the enzyme used is a recombinant protein with 48 additional residues containing the His6 tag
35000
-
SDS-PAGE
35430
-
mass spectrometry
48000
-
non-reducing and reducing SDS-PAGE
48700
-
MALDI-TOF mass spectrometry, whole enzyme
48710
-
calculated from sequence of cDNA, whole enzyme
52000
-
SDS-PAGE
67800
-
alpha2beta2, 2 * 67800 + 2 * 25600, smallest catalytic active unit, SDS-PAGE
72000
-
x * 72000 + x * 20000, SDS-PAGE
73300
-
alpha2beta2, 2 * 73300 + 2 * 17100, SDS-PAGE
90000 - 124000
-
dynamic light scattering
96000
-
non-reducing SDS-PAGE, 16% of the protein was present as a homodimer
160000
170000
175000
180000
186000
-
smallest catalytic active subunit, also aggregations of 324000 Da and 569000 Da are detected, gel filtration
190000
-
gel filtration
200000
-
estimation from sedimentation coefficient
210000
-
gel filtration
400000
-
gel filtration
439500
-
equilibrium sedimentation
600000
-
gel filtration, the majority of the protein is aggregated
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SUBUNITS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
heterodimer
heterohexamer
-
non-functional protein
heterotetramer
-
1 * 75000 + 1 * 20000, alpha2beta2 heterotetramer
hexamer
-
APSR comprises six alphabeta-heterodimers that form a hexameric structure, X-ray crystallography
homodimer
monomer
oligomer
2 * 80000 + 1 * 18500, alpha2beta structure, SDS-PAGE
tetramer
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Crystallization/COMMENTARY
ORGANISM
UNIPROT
LITERATURE
; the structures of the enzyme in the two-electron reduced state and with sulfite bound to FAD are reported at 1.6 A and 2.5 A resolution, respectively
hanging-drop vapour-diffusion method using PEG 4000 as precipitant. Crystals grow in space group P2(1)2(1)2(1), with unit-cell parameters a = 72.4, b = 113.2, c = 194.0 A. The asymmetric unit probably contains two units. The crystals diffract beyond 2 A resolution and are suitable for X-ray structure analysis
O28603; O28604;
dynamic light scattering, ultracentrifugation, and electron paramagnetic resonance methods
-
hanging drop vapor diffusion method, using 20% (w/v) PEG 6000 and 60 mM ammonium sulfate in Tris buffer (0.1 M, pH 7.0), at 18°C
-
hanging drop vapor diffusion method, using 0.1 M HEPES pH 7.5, 0.1 M NaCl, 2.0 M ammonium sulfate and 15% (v/v) glycerol, at 4°C
B8PS61; B8DS74;
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TEMPERATURE STABILITY
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE </