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

BRENDA support

BRENDA Home
show all | hide all No of entries

Information on EC 3.6.1.1 - inorganic diphosphatase and Organism(s) Homo sapiens and UniProt Accession Q9H2U2

for references in articles please use BRENDA:EC3.6.1.1
Please wait a moment until all data is loaded. This message will disappear when all data is loaded.
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.
Specify your search results
Select one or more organisms in this record: ?
This record set is specific for:
Homo sapiens
UNIPROT: Q9H2U2
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: Homo sapiens
The enzyme appears in selected viruses and cellular organisms
Reaction Schemes
Synonyms
pyrophosphatase, inorganic pyrophosphatase, v-ppase, h+-ppase, vacuolar h(+)-pyrophosphatase, e-ppase, sppase, vacuolar h(+)-ppase, soluble inorganic pyrophosphatase, ippase, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
mitochondrial pyrophosphatase
-
cytosolic PPase
-
H+-PPase
-
-
-
-
inorganic diphosphatase
-
-
-
-
inorganic pyrophosphatase
inorganic pyrophosphatase 1
-
LHPPase
-
-
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
-
-
-
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
Mg2+
required, optimal at 5 mM
additional information
-
no divalent cations required for activity
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
Ca2+
over 90% inhibition at 0.12 mM
ADP
-
partially inhibited
AMP
-
partially inhibited
ATP
-
partially inhibited
Ca2+
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
gene PPA2, isozyme PPase2, mitochondrial precursor; gene PPA2, isozyme PPase2
SwissProt
Manually annotated by BRENDA team
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
high expression level of isozyme PPase2
Manually annotated by BRENDA team
high expression level of isozyme PPase2
Manually annotated by BRENDA team
high expression level of isozyme PPase2
Manually annotated by BRENDA team
high expression level of isozyme PPase2
Manually annotated by BRENDA team
higher expression level of isozyme PPase1
Manually annotated by BRENDA team
higher expression level of isozyme PPase1
Manually annotated by BRENDA team
higher expression level of isozyme PPase1
Manually annotated by BRENDA team
higher expression level of isozyme PPase1
Manually annotated by BRENDA team
-
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?
IPYR2_HUMAN
334
0
37920
Swiss-Prot
Mitochondrion (Reliability: 1)
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
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 of His-tagged enzyme in Escherichia coli strain BL21(DE3)
-
gene PPA1, isozyme PPase1, DNA and amino acid sequence determination and anaylsis
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