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Information on EC 4.2.1.3 - aconitate hydratase and Organism(s) Homo sapiens and UniProt Accession P21399

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EC Tree
     4 Lyases
         4.2 Carbon-oxygen lyases
             4.2.1 Hydro-lyases
                4.2.1.3 aconitate hydratase
IUBMB Comments
Besides interconverting citrate and cis-aconitate, it also interconverts cis-aconitate with isocitrate and, hence, interconverts citrate and isocitrate. The equilibrium mixture is 91% citrate, 6% isocitrate and 3% aconitate. cis-Aconitate is used to designate the isomer (Z)-prop-1-ene-1,2,3-tricarboxylate. An iron-sulfur protein, containing a [4Fe-4S] cluster to which the substrate binds.
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Homo sapiens
UNIPROT: P21399
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Word Map
The taxonomic range for the selected organisms is: Homo sapiens
The expected taxonomic range for this enzyme is: Bacteria, Eukaryota, Archaea
Reaction Schemes
Synonyms
aconitase, iron regulatory protein, irp-1, ire-bp, macon, iron regulatory protein 1, aconitate hydratase, cytoplasmic aconitase, aconitase a, c-aconitase, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
Aconitate hydratase
-
Aco2
mitochondrial aconitase
aconitase
Aconitate hydratase
c-acon
-
-
cis-aconitase
-
-
-
-
citrate hydro-lyase
-
-
-
-
Ferritin repressor protein
-
-
-
-
hydratase, aconitate
-
-
-
-
IP210
-
-
-
-
IRE-BP
-
-
-
-
Iron regulatory protein
-
-
-
-
iron regulatory protein 1
-
-
iron-regulatory protein 1
-
-
iron-responsive element binding protein
-
-
-
-
IRP
-
-
-
-
mACON
-
-
Major iron-containing protein
-
-
-
-
MICP
-
-
-
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
elimination
-
-
-
-
SYSTEMATIC NAME
IUBMB Comments
citrate(isocitrate) hydro-lyase (cis-aconitate-forming)
Besides interconverting citrate and cis-aconitate, it also interconverts cis-aconitate with isocitrate and, hence, interconverts citrate and isocitrate. The equilibrium mixture is 91% citrate, 6% isocitrate and 3% aconitate. cis-Aconitate is used to designate the isomer (Z)-prop-1-ene-1,2,3-tricarboxylate. An iron-sulfur protein, containing a [4Fe-4S] cluster to which the substrate binds.
CAS REGISTRY NUMBER
COMMENTARY hide
9024-25-3
-
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
cis-aconitate + H2O
citrate
show the reaction diagram
-
-
-
-
?
citrate
isocitrate
show the reaction diagram
isocitrate
cis-aconitate + H2O
show the reaction diagram
-
-
-
-
r
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
additional information
?
-
COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
[4Fe-4S]-center
-
HOSCN induces rapid and efficient release of iron from aconitase. Blocking the [4Fe-4 S] cluster inhibits HOSCN-mediated inactivation
METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
Iron
under iron-replete conditions, enzyme binds a [4Fe-4S] cluster und functions as cytosolic aconitase. Under iron shortage, enzyme is involved in translational control as an iron regulatory protein
Iron
-
contains a [4Fe-4D] cluster
Zn
-
an X-ray fluorescence measurement performed on a gold-derivative crystal shows the unexpected presence of zinc, in addition to gold and iron
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
citrate
citrate accumulation under enzyme inhibition restricts the formation of hydroxyl radical in the Fenton reaction through the binding of iron ions, and it thus protects the enzyme from inactivation
Fluorocitrate
active site aconitase inhibitor blocks erythroid differentiation in a manner similar to iron deprivation
fructose-6-phosphate
-
Oxalomalate
inhibition of the enzyme by oxalomalate reduces glutamate secretion and eliminates the effect of iron ions on the latter
oxalosuccinate
-
peroxynitrite
inactivation due to the release of iron from the Fe-S cluster, other nitric oxide sources decrease the activity of the mitochondrial isozyme
trans-aconitate
a competitive inhibitor of the enzyme with respect to cis-aconitate and a non-competitive inhibitor with respect to citrate and isocitrate
deferiprone
-
the loss of aconitase activity observed in cells should be ascribed to the chelation of available iron rather than to a direct effect of the chelator on the iron-sulfur clusters of the enzyme
Fluorocitrate
active site aconitase inhibitor blocks erythroid differentiation in a manner similar to iron deprivation
HOCl
-
exposure of human coronary artery endothelial cells to 0-50 microM HOCl or 0-150 microM HOSCN results in an increase in intracellular iron, loss of aconitase activity and a loss of mitochondrial aconitase protein. Cytosolic aconitase is not affected
HOSCN
-
exposure of human coronary artery endothelial cells to 0-50 microM HOCl or 0-150 microM HOSCN results in an increase in intracellular iron, loss of aconitase activity and a loss of mitochondrial aconitase protein. Cytosolic aconitase is not affected. HOSCN induces rapid and efficient release of iron from aconitase. Blocking the [4Fe-4 S] cluster inhibits HOSCN-mediated inactivation
additional information
-
ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
ferric ammonium citrate
-
increases activity and gene expression
hemin
-
increases activity and gene expression
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
purified human CD34+ progenitors derived from granulocyte-colony stimulating factor mobilized peripheral blood cells of normal donors
Manually annotated by BRENDA team
mitochondrial isozyme plays the key role in the bioenergetic theory of malignant transformation of the prostate
Manually annotated by BRENDA team
-
coronary artery endothelial cells
Manually annotated by BRENDA team
-
coronary artery endothelial cells
Manually annotated by BRENDA team
-
gastric carcinoma cell line Okajima
Manually annotated by BRENDA team
-
epithelium
Manually annotated by BRENDA team
purified human CD34+ progenitors derived from granulocyte-colony stimulating factor mobilized peripheral blood cells of normal donors
Manually annotated by BRENDA team
-
malignant and nonmalignant tissues
Manually annotated by BRENDA team
mitochondrial isozyme plays the key role in the bioenergetic theory of malignant transformation of the prostate
Manually annotated by BRENDA team
-
muscle exercise does not affect aconitase activity despite increased oxidative stress
Manually annotated by BRENDA team
-
-
Manually annotated by BRENDA team
additional information
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
mitochondrial isozyme mAH
Manually annotated by BRENDA team
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
physiological function
iron restriction suppresses mitochondrial and cytosolic aconitase activity in erythroid but not granulocytic or megakaryocytic progenitors. The mechanism for aconitase regulation of erythropoiesis most likely involves both production of metabolic intermediates as well as modulation of erythropoietin signaling
physiological function
iron restriction suppresses mitochondrial and cytosolic aconitase activity in erythroid but not granulocytic or megakaryocytic progenitors. The mechanism for aconitase regulation of erythropoiesis most likely involves both production of metabolic intermediates as well as modulation of erythropoietin signaling
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
ACOHC_HUMAN
889
0
98399
Swiss-Prot
other Location (Reliability: 1)
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
-
partial amino acid sequence
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
POSTTRANSLATIONAL MODIFICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
phosphoprotein
mechanism controlling IRP1 activity at the level of its stability can be phosphorylation of Ser138, Ser138, Ser711, and flanking sequences are highly conserved
phosphoprotein
CRYSTALLIZATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
aconitase form of bifunctional enzyme, evaluation of model for iron regulatory form of enzyme and its binding to iron-responsive elements
structure of human IRP1 in its aconitase form and tentative model of an IRP1-iron-responsive element complex
recombinant enzyme, hanging-drop vapour-diffusion method. An X-ray fluorescence measurement performed on a gold-derivative crystal shows the unexpected presence of zinc, in addition to gold and iron
-
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
S711A
-
citrate-to-isocitrate aconitase activity is about 70% of the wild-type activity, isocitrate-to-cis-aconitate activity is about 90% of wild-type activity
S711D
-
no citrate-to-isocitrate aconitase activity, isocitrate-to-cis-aconitate activity is identical to wild-type activity
S711E
S711T
-
citrate-to-isocitrate aconitase activity is about 60% of the wild-type activity, isocitrate-to-cis-aconitate activity is about 60% of wild-type activity
additional information
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
recombinant IRP1
-
APPLICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
medicine
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Baldwin, G.S.; Seet, K.L.; Callaghan, J.; Toncich, G.; Toh, B.H.; Moritz, R.L.; Rubira, M.R.; Simpson, R.
Purification and partial amino acid sequence of human aconitase
Protein Seq. Data Anal.
4
63-67
1991
Homo sapiens, Sus scrofa
Manually annotated by BRENDA team
Rzymkiewicz, D.M.; Reddan, J.R.; Andley, U.P.
Induction of heme oxygenase-1 modulates cis-aconitase activity in lens epithelial cells
Biochem. Biophys. Res. Commun.
270
324-328
2000
Homo sapiens
Manually annotated by BRENDA team
Dupuy, J.; Darnault, C.; Brazzolotto, X.; Kuehn, L.C.; Moulis, J.M.; Volbeda, A.; Fontecilla-Camps, J.C.
Crystallization and preliminary x-ray diffraction data for the aconitase form of human iron-regulatory protein 1
Acta Crystallogr. Sect. F
F61
482-485
2005
Homo sapiens
Manually annotated by BRENDA team
Fillebeen, C.; Caltagirone, A.; Martelli, A.; Moulis, J.M.; Pantopoulos, K.
IRP1 Ser-711 is a phosphorylation site, critical for regulation of RNA-binding and aconitase activities
Biochem. J.
388
143-150
2005
Homo sapiens
Manually annotated by BRENDA team
Juang, H.H.
Modulation of iron on mitochondrial aconitase expression in human prostatic carcinoma cells
Mol. Cell. Biochem.
265
185-194
2004
Homo sapiens
Manually annotated by BRENDA team
Pitula, J.S.; Deck, K.M.; Clarke, S.L.; Anderson, S.A.; Vasanthakumar, A.; Eisenstein, R.S.
Selective inhibition of the citrate-to-isocitrate reaction of cytosolic aconitase by phosphomimetic mutation of serine-711
Proc. Natl. Acad. Sci. USA
101
10907-10912
2004
Homo sapiens
Manually annotated by BRENDA team
Zhang, S.; Sandstroem, M.E.; Lanner, J.T.; Thorell, A.; Westerblad, H.; Katz, A.
Activation of aconitase in mouse fast-twitch skeletal muscle during contraction-mediated oxidative stress
Am. J. Physiol.
293
C1154-C1159
2007
Homo sapiens, Mus musculus
Manually annotated by BRENDA team
Singh, K.K.; Desouki, M.M.; Franklin, R.B.; Costello, L.C.
Mitochondrial aconitase and citrate metabolism in malignant and nonmalignant human prostate tissues
Mol. Cancer
5
14
2006
Homo sapiens
Manually annotated by BRENDA team
Dupuy, J.; Volbeda, A.; Carpentier, P.; Darnault, C.; Moulis, J.; Fontecilla-Camps, J.C.
Crystal structure of human iron regulatory protein 1 as cytosolic aconitase
Structure
14
129-139
2006
Homo sapiens (P21399), Homo sapiens
Manually annotated by BRENDA team
Matasova, L.V.; Popova, T.N.
Aconitate hydratase of mammals under oxidative stress
Biochemistry (Moscow)
73
957-964
2008
Homo sapiens, Homo sapiens (P21399), Mus musculus, Mus musculus (P28271), Rattus norvegicus, Rattus norvegicus (Q63270)
Manually annotated by BRENDA team
Goncalves, S.; Paupe, V.; Dassa, E.P.; Rustin, P.
Deferiprone targets aconitase: implication for Friedreich's ataxia treatment
BMC Neurol.
8
20
2008
Homo sapiens
Manually annotated by BRENDA team
Bullock, G.C.; Delehanty, L.L.; Talbot, A.L.; Gonias, S.L.; Tong, W.H.; Rouault, T.A.; Dewar, B.; Macdonald, J.M.; Chruma, J.J.; Goldfarb, A.N.
Iron control of erythroid development by a novel aconitase-associated regulatory pathway
Blood
116
97-108
2010
Homo sapiens (P21399), Homo sapiens (Q99798), Homo sapiens
Manually annotated by BRENDA team
Condo, I.; Malisan, F.; Guccini, I.; Serio, D.; Rufini, A.; Testi, R.
Molecular control of the cytosolic aconitase/IRP1 switch by extramitochondrial frataxin
Hum. Mol. Genet.
19
1221-1229
2010
Homo sapiens
Manually annotated by BRENDA team
Talib, J.; Cook, N.; Pattison, D.; Davies, M.
Disruption of the iron-sulfur cluster of aconitase by myeloperoxidase-derived oxidants
Free Radic. Biol. Med.
75 Suppl 1
S27-S28
2014
Homo sapiens
Manually annotated by BRENDA team
Dupuy, J.; Volbeda, A.; Carpentier, P.; Darnault, C.; Moulis, J.M.; Fontecilla-Camps, J.C.
Crystal structure of human iron regulatory protein 1 as cytosolic aconitase
Structure
14
129-139
2006
Homo sapiens (P21399), Homo sapiens
Manually annotated by BRENDA team