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Literature summary extracted from

  • Kaneko, K.; Inomata, T.; Masui, T.; Koshu, T.; Umezawa, Y.; Itoh, K.; Pozueta-Romero, J.; Mitsui, T.
    Nucleotide pyrophosphatase/phosphodiesterase 1 exerts a negative effect on starch accumulation and growth in rice seedlings under high temperature and CO2 concentration conditions (2014), Plant Cell Physiol., 55, 320-332.
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

EC Number Cloned (Comment) Organism
3.6.1.9 gene npp1, ectopic expression in transgenic rice suspension cells Oryza sativa
3.6.1.9 gene npp2, screening of a rice shoot cDNA library and cDNAs sequencing encoding NPP isozyme genes, ectopic expression of npp2 in transgenic rice suspension cells Oryza sativa
3.6.1.9 gene npp6, screening of a rice shoot cDNA library and cDNAs sequencing encoding NPP isozyme genes, ectopic expression of npp6 in transgenic rice suspension cells Oryza sativa

Protein Variants

EC Number Protein Variants Comment Organism
3.6.1.9 additional information generation of an npp1 knockout mutant, that shows shoots and roots larger than those of wild-type seedlings. The starch content in the npp1 mutant shoots is higher than that of wild-type shoots. Growth and starch accumulation are also enhanced under an atmospheric CO2 concentration (40 Pa) when plants were cultured under a 33°C/28°C regime Oryza sativa

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.6.1.9 0.3
-
ADP pH 4.5, 37°C Oryza sativa
3.6.1.9 0.5
-
diphosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 0.5
-
UDP pH 4.5, 37°C Oryza sativa
3.6.1.9 0.5
-
adenosine 5'-phosphosulfate pH 4.5, 37°C Oryza sativa
3.6.1.9 0.7
-
ADP-glucose pH 4.5, 37°C Oryza sativa
3.6.1.9 0.8
-
GDP-mannose pH 6.0, 37°C Oryza sativa
3.6.1.9 0.8
-
ADP-glucose pH 6.0, 37°C Oryza sativa
3.6.1.9 0.8
-
adenosine 5'-phosphosulfate pH 4.5, 37°C Oryza sativa
3.6.1.9 0.9
-
CDP-glucose pH 6.0, 37°C Oryza sativa
3.6.1.9 0.9
-
GDP pH 4.5, 37°C Oryza sativa
3.6.1.9 1.1
-
ATP pH 4.5, 37°C Oryza sativa
3.6.1.9 1.1
-
TDP pH 4.5, 37°C Oryza sativa
3.6.1.9 1.2
-
UDP pH 4.5, 37°C Oryza sativa
3.6.1.9 1.4
-
ADP-ribose pH 6.0, 37°C Oryza sativa
3.6.1.9 1.5
-
UDP-glucose pH 6.0, 37°C Oryza sativa
3.6.1.9 1.6
-
UDP-glucose pH 4.5, 37°C Oryza sativa
3.6.1.9 1.8
-
TDP-glucose pH 4.5, 37°C Oryza sativa
3.6.1.9 1.9
-
CDP pH 4.5, 37°C Oryza sativa
3.6.1.9 2.1
-
ATP pH 6.0, 37°C Oryza sativa
3.6.1.9 2.1
-
bis(4-nitrophenyl)phosphate pH 6.0, 37°C Oryza sativa
3.6.1.9 2.2
-
diphosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 2.2
-
IDP pH 4.5, 37°C Oryza sativa
3.6.1.9 2.6
-
TDP pH 4.5, 37°C Oryza sativa
3.6.1.9 2.6
-
bis(4-nitrophenyl)phosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 3
-
adenosine 5'-phosphosulfate pH 6.0, 37°C Oryza sativa
3.6.1.9 3
-
bis(4-nitrophenyl)phosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 4.3
-
ADP pH 6.0, 37°C Oryza sativa

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
3.6.1.9 additional information the enzyme shows no requirement for a metal ion Oryza sativa

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.6.1.9 70000
-
x * 70000, recombinant isozyme NPP1, SDS-PAGE Oryza sativa
3.6.1.9 71000
-
x * 71000, recombinant isozyme NPP2, SDS-PAGE Oryza sativa
3.6.1.9 74000
-
x * 74000, recombinant isozyme NPP6, SDS-PAGE Oryza sativa
3.6.1.9 224000
-
recombinant isozyme NPP6, gel filtration Oryza sativa
3.6.1.9 251000
-
recombinant isozyme NPP1, gel filtration Oryza sativa
3.6.1.9 374000
-
recombinant isozyme NPP2, gel filtration Oryza sativa

Organism

EC Number Organism UniProt Comment Textmining
3.6.1.9 Oryza sativa
-
gene npp6
-
3.6.1.9 Oryza sativa I4DHV7 NPP2; gene npp2
-
3.6.1.9 Oryza sativa Q6ZI95 NPP1; gene npp1
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.6.1.9 callus
-
Oryza sativa
-
3.6.1.9 leaf mature Oryza sativa
-
3.6.1.9 additional information isozyme NPP1 is widely expressed in shoots, young roots, scutella, mature leaves and roots, but not in calli Oryza sativa
-
3.6.1.9 additional information isozyme NPP6 is expressed in the whole plant and also in calli Oryza sativa
-
3.6.1.9 root young Oryza sativa
-
3.6.1.9 root isozyme NPP2 is predominantly expressed in roots Oryza sativa
-
3.6.1.9 scutellum
-
Oryza sativa
-
3.6.1.9 seedling
-
Oryza sativa
-
3.6.1.9 shoot
-
Oryza sativa
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.6.1.9 adenosine 5'-phosphosulfate + H2O 31% of the activity with ADP Oryza sativa ?
-
?
3.6.1.9 adenosine 5'-phosphosulfate + H2O 44% of the activity with ADP-glucose Oryza sativa ?
-
?
3.6.1.9 adenosine 5'-phosphosulfate + H2O 81% of the activity with UDP Oryza sativa ?
-
?
3.6.1.9 ADP + H2O best substrate Oryza sativa ?
-
?
3.6.1.9 ADP + H2O 40% of the activity with ADP-glucose Oryza sativa ?
-
?
3.6.1.9 ADP + H2O 87% of the activity with UDP Oryza sativa ?
-
?
3.6.1.9 ADP-glucose + H2O best substrate Oryza sativa AMP + alpha-D-glucose 1-phosphate
-
?
3.6.1.9 ADP-glucose + H2O 65% of the activity with ADP Oryza sativa AMP + alpha-D-glucose 1-phosphate
-
?
3.6.1.9 ADP-ribose + H2O 99% of the activity with ADP-glucose Oryza sativa AMP + alpha-D-ribose 1-phosphate
-
?
3.6.1.9 ATP + H2O
-
Oryza sativa ?
-
?
3.6.1.9 ATP + H2O 81% of the activity with ADP-glucose Oryza sativa ?
-
?
3.6.1.9 bis(4-nitrophenyl)phosphate + H2O
-
Oryza sativa ?
-
?
3.6.1.9 bis(4-nitrophenyl)phosphate + H2O 32% of the activity with UDP Oryza sativa ?
-
?
3.6.1.9 bis(4-nitrophenyl)phosphate + H2O 35% of the activity with UDP Oryza sativa ?
-
?
3.6.1.9 CDP + H2O 56% of the activity with UDP Oryza sativa ?
-
?
3.6.1.9 CDP-glucose + H2O 77% of the activity with ADP-glucose Oryza sativa CMP + alpha-D-glucose 1-phosphate
-
?
3.6.1.9 diphosphate + H2O
-
Oryza sativa ?
-
?
3.6.1.9 diphosphate + H2O 59% of the activity with ADP Oryza sativa ?
-
?
3.6.1.9 GDP + H2O 38% of the activity with UDP Oryza sativa ?
-
?
3.6.1.9 GDP-mannose + H2O 76% of the activity with ADP-glucose Oryza sativa GMP + alpha-D-mannose 1-phosphate
-
?
3.6.1.9 IDP + H2O 48% of the activity with UDP Oryza sativa ?
-
?
3.6.1.9 additional information isozyme NPP1 exhibits hydrolytic activities toward ATP, UDP-glucose and the starch precursor molecule, ADP-glucose, no activity with hexose phosphates and mononucleotides Oryza sativa ?
-
?
3.6.1.9 additional information isozyme NPP2 does not recognize nucleotide sugars as substrates, but hydrolyzed UDP, ADP and adenosine 5'-phosphosulfate, no activity with hexose phosphates and mononucleotides Oryza sativa ?
-
?
3.6.1.9 additional information isozyme NPP6 exhibits hydrolytic activities toward ATP, UDP-glucose and the starch precursor molecule, ADP-glucose, no activity with hexose phosphates and mononucleotides Oryza sativa ?
-
?
3.6.1.9 TDP + H2O 27% of the activity with ADP Oryza sativa ?
-
?
3.6.1.9 TDP + H2O 40% of the activity with UDP Oryza sativa ?
-
?
3.6.1.9 TDP-glucose + H2O 15% of the activity with ADP Oryza sativa tMP + alpha-D-glucose 1-phosphate
-
?
3.6.1.9 TDP-glucose + H2O 82% of the activity with ADP-glucose Oryza sativa tMP + alpha-D-glucose 1-phosphate
-
?
3.6.1.9 UDP + H2O best substrate Oryza sativa ?
-
?
3.6.1.9 UDP + H2O 68% of the activity with ADP Oryza sativa ?
-
?
3.6.1.9 UDP-glucose + H2O 25% of the activity with ADP Oryza sativa UMP + alpha-D-glucose 1-phosphate
-
?
3.6.1.9 UDP-glucose + H2O 77% of the activity with ADP-glucose Oryza sativa UMP + alpha-D-glucose 1-phosphate
-
?

Subunits

EC Number Subunits Comment Organism
3.6.1.9 oligomer x * 70000, recombinant isozyme NPP1, SDS-PAGE Oryza sativa
3.6.1.9 oligomer x * 71000, recombinant isozyme NPP2, SDS-PAGE Oryza sativa
3.6.1.9 oligomer x * 74000, recombinant isozyme NPP6, SDS-PAGE Oryza sativa

Synonyms

EC Number Synonyms Comment Organism
3.6.1.9 NPP1
-
Oryza sativa
3.6.1.9 NPP2
-
Oryza sativa
3.6.1.9 NPP6
-
Oryza sativa
3.6.1.9 nucleotide pyrophosphatase/phosphodiesterase
-
Oryza sativa
3.6.1.9 nucleotide pyrophosphatase/phosphodiesterase 1
-
Oryza sativa

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.6.1.9 55
-
isozyme NPP6 Oryza sativa
3.6.1.9 60
-
isozyme NPP1 Oryza sativa
3.6.1.9 60
-
isozyme NPP2 Oryza sativa

Turnover Number [1/s]

EC Number Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
3.6.1.9 2 8 GDP pH 4.5, 37°C Oryza sativa
3.6.1.9 34
-
adenosine 5'-phosphosulfate pH 4.5, 37°C Oryza sativa
3.6.1.9 40
-
diphosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 71
-
bis(4-nitrophenyl)phosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 76
-
adenosine 5'-phosphosulfate pH 4.5, 37°C Oryza sativa
3.6.1.9 79
-
diphosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 80
-
ATP pH 4.5, 37°C Oryza sativa
3.6.1.9 81
-
TDP-glucose pH 4.5, 37°C Oryza sativa
3.6.1.9 83
-
ADP pH 4.5, 37°C Oryza sativa
3.6.1.9 87
-
TDP pH 4.5, 37°C Oryza sativa
3.6.1.9 88
-
IDP pH 4.5, 37°C Oryza sativa
3.6.1.9 89
-
CDP pH 4.5, 37°C Oryza sativa
3.6.1.9 101
-
UDP pH 4.5, 37°C Oryza sativa
3.6.1.9 104
-
UDP pH 4.5, 37°C Oryza sativa
3.6.1.9 115
-
UDP-glucose pH 4.5, 37°C Oryza sativa
3.6.1.9 124
-
TDP-glucose pH 6.0, 37°C Oryza sativa
3.6.1.9 125
-
CDP-glucose pH 6.0, 37°C Oryza sativa
3.6.1.9 130
-
ADP-glucose pH 4.5, 37°C Oryza sativa
3.6.1.9 151
-
GDP-mannose pH 6.0, 37°C Oryza sativa
3.6.1.9 214
-
ADP-glucose pH 6.0, 37°C Oryza sativa
3.6.1.9 223
-
bis(4-nitrophenyl)phosphate pH 6.0, 37°C Oryza sativa
3.6.1.9 282
-
UDP-glucose pH 6.0, 37°C Oryza sativa
3.6.1.9 308
-
bis(4-nitrophenyl)phosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 329
-
adenosine 5'-phosphosulfate pH 6.0, 37°C Oryza sativa
3.6.1.9 370
-
ADP-ribose pH 6.0, 37°C Oryza sativa
3.6.1.9 415
-
ATP pH 6.0, 37°C Oryza sativa
3.6.1.9 449
-
ADP pH 6.0, 37°C Oryza sativa

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.6.1.9 4 5 isozyme NPP6 Oryza sativa
3.6.1.9 4.5
-
isozyme NPP2 Oryza sativa
3.6.1.9 6
-
isozyme NPP1 Oryza sativa

General Information

EC Number General Information Comment Organism
3.6.1.9 malfunction an npp1 knockout mutant shows shoots and roots larger than those of wild-type seedlings. The starch content in the npp1 mutant shoots is higher than that of wild-type shoots. Growth and starch accumulation are also enhanced under an atmospheric CO2 concentration (40 Pa) when plants were cultured under a 33°C/28°C regime, phenotype, overview. Downregulation of isozyme NPP1 expression is not accompanied by enhancement of AGPase, UGPase and sucrose synthase activities Oryza sativa
3.6.1.9 physiological function the enzyme exerts a negative effect on starch accumulation and growth in rice seedlings under high temperature and CO2 concentration conditions. Isozyme NPP1 is a major determinant of ADP-glucose hydrolytic activity in rice shoots Oryza sativa

kcat/KM [mM/s]

EC Number kcat/KM Value [1/mMs-1] kcat/KM Value Maximum [1/mMs-1] Substrate Comment Organism Structure
3.6.1.9 18
-
diphosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 27
-
bis(4-nitrophenyl)phosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 32
-
GDP pH 4.5, 37°C Oryza sativa
3.6.1.9 34
-
TDP pH 4.5, 37°C Oryza sativa
3.6.1.9 40
-
IDP pH 4.5, 37°C Oryza sativa
3.6.1.9 45
-
TDP-glucose pH 4.5, 37°C Oryza sativa
3.6.1.9 47
-
CDP pH 4.5, 37°C Oryza sativa
3.6.1.9 68
-
adenosine 5'-phosphosulfate pH 4.5, 37°C Oryza sativa
3.6.1.9 72
-
UDP-glucose pH 4.5, 37°C Oryza sativa
3.6.1.9 73
-
ATP pH 4.5, 37°C Oryza sativa
3.6.1.9 81
-
TDP pH 4.5, 37°C Oryza sativa
3.6.1.9 84
-
UDP pH 4.5, 37°C Oryza sativa
3.6.1.9 93
-
adenosine 5'-phosphosulfate pH 4.5, 37°C Oryza sativa
3.6.1.9 103
-
bis(4-nitrophenyl)phosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 104.5
-
ADP pH 6.0, 37°C Oryza sativa
3.6.1.9 109.7
-
adenosine 5'-phosphosulfate pH 6.0, 37°C Oryza sativa
3.6.1.9 139
-
CDP-glucose pH 6.0, 37°C Oryza sativa
3.6.1.9 171.5
-
bis(4-nitrophenyl)phosphate pH 6.0, 37°C Oryza sativa
3.6.1.9 175
-
diphosphate pH 4.5, 37°C Oryza sativa
3.6.1.9 186
-
ADP-glucose pH 4.5, 37°C Oryza sativa
3.6.1.9 188
-
UDP-glucose pH 6.0, 37°C Oryza sativa
3.6.1.9 189
-
GDP-mannose pH 6.0, 37°C Oryza sativa
3.6.1.9 198
-
ATP pH 6.0, 37°C Oryza sativa
3.6.1.9 203
-
UDP pH 4.5, 37°C Oryza sativa
3.6.1.9 206
-
TDP-glucose pH 6.0, 37°C Oryza sativa
3.6.1.9 264.3
-
ADP-ribose pH 6.0, 37°C Oryza sativa
3.6.1.9 267.5
-
ADP-glucose pH 6.0, 37°C Oryza sativa
3.6.1.9 297
-
ADP pH 4.5, 37°C Oryza sativa