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Information on EC 3.6.1.1 - inorganic diphosphatase and Organism(s) Homo sapiens

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EC Tree
     3 Hydrolases
         3.6 Acting on acid anhydrides
             3.6.1 In phosphorus-containing anhydrides
                3.6.1.1 inorganic diphosphatase
IUBMB Comments
Specificity varies with the source and with the activating metal ion. The enzyme from some sources may be identical with EC 3.1.3.1 (alkaline phosphatase) or EC 3.1.3.9 (glucose-6-phosphatase). cf. EC 7.1.3.1, H+-exporting diphosphatase.
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Homo sapiens
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Word Map
The taxonomic range for the selected organisms is: Homo sapiens
The enzyme appears in selected viruses and cellular organisms
Reaction Schemes
Synonyms
pyrophosphatase, inorganic pyrophosphatase, v-ppase, h+-ppase, vacuolar h(+)-pyrophosphatase, sppase, e-ppase, vacuolar h(+)-ppase, soluble inorganic pyrophosphatase, ippase, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
cytosolic PPase
-
H+-PPase
-
-
-
-
inorganic diphosphatase
-
-
-
-
inorganic pyrophosphatase
inorganic pyrophosphatase 1
-
LHPPase
-
-
mitochondrial pyrophosphatase
-
phospholysine phosphohistidine inorganic pyrophosphate phosphatase
-
-
PPase
pyrophosphatase, inorganic
-
-
-
-
Pyrophosphate phospho-hydrolase
-
-
-
-
Pyrophosphate phosphohydrolase
-
-
-
-
Pyrophosphate-energized inorganic pyrophosphatase
-
-
-
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
phosphorous acid anhydride hydrolysis
-
-
-
-
PATHWAY SOURCE
PATHWAYS
-
-, -
SYSTEMATIC NAME
IUBMB Comments
diphosphate phosphohydrolase
Specificity varies with the source and with the activating metal ion. The enzyme from some sources may be identical with EC 3.1.3.1 (alkaline phosphatase) or EC 3.1.3.9 (glucose-6-phosphatase). cf. EC 7.1.3.1, H+-exporting diphosphatase.
CAS REGISTRY NUMBER
COMMENTARY hide
9024-82-2
-
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
diphosphate + H2O
2 phosphate
show the reaction diagram
additional information
?
-
a copper(II)-based two-dimensional metal-organic framework with nanosheet structure (CuBDC NS) that possesses peroxidase (POx) mimicking activity is prepared. In the presence of H2O2, the system catalyses the oxidation of terephthalic acid to a blue-fluorescent product (excitation at 315 nm, emission at 425 nm). Diphosphate has a very strong affinity for Cu2+ ion and blocks the POx-mimicking activity of the CuBDC NS. If inorganic diphosphatase is present, the POx mimicking activity is gradually restored because diphosphate is hydrolyzed. Design and evaluation of a method for determination of inorganic pyrophosphatase activity by fluorometry, method, overview
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-
-
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
diphosphate + H2O
2 phosphate
show the reaction diagram
METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
-
no divalent cations required for activity
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
ADP
-
partially inhibited
AMP
-
partially inhibited
ATP
-
partially inhibited
Ca2+
over 90% inhibition at 0.12 mM; over 90% inhibition at 0.12 mM
Co2+
-
-
Mg2+
-
-
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.25 - 1.67
diphosphate
-
varying Mg2+ and EDTA concentrations
SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
79.75
-
-
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
7.4
assay at
pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
6 - 9
-
about 8% and 40% relative activity at pH 6 and 9 respectively, 5 mM diphosphate
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
-
nuclear expression is lost in cultured cells, while the cytosolic expression is retained
Manually annotated by BRENDA team
additional information
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
malfunction
knockdown of pyrophosphatase 1 decreases colony formation and viability of MCF-7 cells
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
IPYR_HUMAN
289
0
32660
Swiss-Prot
other Location (Reliability: 2)
LHPP_HUMAN
270
0
29165
Swiss-Prot
Secretory Pathway (Reliability: 5)
IPYR2_HUMAN
334
0
37920
Swiss-Prot
Mitochondrion (Reliability: 1)
PRUN1_HUMAN
453
0
50200
Swiss-Prot
other Location (Reliability: 3)
D6RGI1_HUMAN
88
0
10491
TrEMBL
other Location (Reliability: 1)
A8K0P2_HUMAN
274
0
31576
TrEMBL
other Location (Reliability: 3)
Q5SQT6_HUMAN
178
0
19982
TrEMBL
other Location (Reliability: 2)
A0A0C4DGB9_HUMAN
63
0
7405
TrEMBL
other Location (Reliability: 3)
H0Y9D8_HUMAN
226
0
25635
TrEMBL
Mitochondrion (Reliability: 1)
D6R967_HUMAN
191
0
21390
TrEMBL
Mitochondrion (Reliability: 1)
D6RAD3_HUMAN
113
0
12799
TrEMBL
Mitochondrion (Reliability: 1)
B4DFH3_HUMAN
202
0
22970
TrEMBL
other Location (Reliability: 1)
B4DR66_HUMAN
263
0
30008
TrEMBL
Mitochondrion (Reliability: 1)
V9HWB5_HUMAN
289
0
32660
TrEMBL
other Location (Reliability: 2)
D6RGV9_HUMAN
195
0
22067
TrEMBL
Mitochondrion (Reliability: 1)
H0YAK2_HUMAN
69
0
8105
TrEMBL
other Location (Reliability: 1)
ADPRM_HUMAN
342
0
39529
Swiss-Prot
-
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
20000
-
2 * 20000, SDS-PAGE
32000
x * 32000, calculated from amino acid sequence
42000
-
gel filtration
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
?
x * 32000, calculated from amino acid sequence
dimer
-
2 * 20000, SDS-PAGE
POSTTRANSLATIONAL MODIFICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
proteolytic modification
PPase2 contains a mitochondrial import siganl sequence
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
recombinant His-tagged enzyme from Escherichia coli strain BL21(DE3) by nickel affinity chromatography
-
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
expression of His-tagged enzyme in Escherichia coli strain BL21(DE3)
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gene PPA1, isozyme PPase1, DNA and amino acid sequence determination and anaylsis
gene PPA2, isozyme PPase2, DNA and amino acid sequence determination and anaylsis, localization on chromosome 4q25, expression of a GFP-atgged PPase2 fragment in HeLa cells
EXPRESSION
ORGANISM
UNIPROT
LITERATURE
trichostatin A and Sp1 induce pyrophosphatase 1 promoter activity and protein expression
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Thuillier, L.
Purification and kinetic properties of human erythrocyte Mg2+-dependent inorganic pyrophosphatase
Biochim. Biophys. Acta
524
198-206
1978
Homo sapiens
Manually annotated by BRENDA team
Reichert, W.H.; Lauter, C.J.; Trams, E.G.
Inorganic pyrophosphatase in cultured cells
Biochim. Biophys. Acta
370
556-563
1974
Homo sapiens, Mus sp.
Manually annotated by BRENDA team
Hoerder, M.
Inorganic pyrophosphate-phosphohydrolytic activity in human serum. Catalytic properties of the ionic species of PPi and MgPPi complexes
Biochim. Biophys. Acta
321
329-335
1973
Homo sapiens
Manually annotated by BRENDA team
Curbo, S.; Lagier-Tourenne, C.; Carrozzo, R.; Palenzuela, L.; Lucioli, S.; Hirano, M.; Santorelli, F.; Arenas, J.; Karlsson, A.; Johansson, M.
Human mitochondrial pyrophosphatase: cDNA cloning and analysis of the gene in patients with mtDNA depletion syndromes
Genomics
87
410-416
2006
Homo sapiens (Q15181), Homo sapiens (Q9H2U2), Homo sapiens
Manually annotated by BRENDA team
Koike, E.; Toda, S.; Yokoi, F.; Izuhara, K.; Koike, N.; Itoh, K.; Miyazaki, K.; Sugihara, H.
Expression of new human inorganic pyrophosphatase in thyroid diseases: its intimate association with hyperthyroidism
Biochem. Biophys. Res. Commun.
341
691-696
2006
Homo sapiens
Manually annotated by BRENDA team
Mishra, D.R.; Chaudhary, S.; Krishna, B.M.; Mishra, S.K.
Identification of critical elements for regulation of inorganic pyrophosphatase (PPA1) in MCF7 breast cancer cells
PLoS ONE
10
e0124864
2015
Homo sapiens (Q15181), Homo sapiens
Manually annotated by BRENDA team
Yi, Y.J.; Sutovsky, M.; Kennedy, C.; Sutovsky, P.
Identification of the inorganic pyrophosphate metabolizing, ATP substituting pathway in mammalian spermatozoa
PLoS ONE
7
e34524
2012
Sus scrofa, Bos taurus (P37980), Homo sapiens (Q15181), Homo sapiens, Mus musculus (Q9D819), Mus musculus
Manually annotated by BRENDA team
Hu, S.; Zhu, L.; Lam, C.W.; Guo, L.; Lin, Z.; Qiu, B.; Wong, K.Y.; Chen, G.; Liu, Z.
Fluorometric determination of the activity of inorganic pyrophosphatase and its inhibitors by exploiting the peroxidase mimicking properties of a two-dimensional metal organic framework
Mikrochim. Acta
186
190
2019
Homo sapiens (Q15181)
Manually annotated by BRENDA team