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Literature summary for 3.6.1.11 extracted from

  • Ugochukwu, E.; Lovering, A.L.; Mather, O.C.; Young, T.W.; White, S.A.
    The crystal structure of the cytosolic exopolyphosphatase from Saccharomyces cerevisiae reveals the basis for substrate specificity (2007), J. Mol. Biol., 371, 1007-1021.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
gene PPX1, overexpression Saccharomyces cerevisiae

Crystallization (Commentary)

Crystallization (Comment) Organism
enzxme in complex with phosphate, sulfate, or ATP, X-ray diffraction structure determination and analysis at 1.6, 1.8, and 1.9 A resolution, multiple isomorphous replacement with anomalous scattering technique Saccharomyces cerevisiae

Localization

Localization Comment Organism GeneOntology No. Textmining
cytosol
-
Saccharomyces cerevisiae 5829
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
45058
-
x * 45058, recombinant enzyme, mass spectrometry Saccharomyces cerevisiae

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
(phosphate)n + H2O Saccharomyces cerevisiae
-
(phosphate)n-1 + phosphate
-
?

Organism

Organism UniProt Comment Textmining
Saccharomyces cerevisiae
-
gene PPX1
-

Purification (Commentary)

Purification (Comment) Organism
recombinant PPX1 17.4fold in a two-step procedure Saccharomyces cerevisiae

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2070
-
purified recombinant enzyme Saccharomyces cerevisiae

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
(phosphate)n + H2O
-
Saccharomyces cerevisiae (phosphate)n-1 + phosphate
-
?
(phosphate)n + H2O the cytosolic exopolyphosphatase that processively cleaves the terminal phosphate group from the polyphosphate chain, until inorganic diphosphate is all that remains, structure of the substrate binding channel, overview Saccharomyces cerevisiae (phosphate)n-1 + phosphate
-
?

Subunits

Subunits Comment Organism
? x * 45058, recombinant enzyme, mass spectrometry Saccharomyces cerevisiae

Synonyms

Synonyms Comment Organism
More PPX1 belongs to the DHH family of phosphoesterases Saccharomyces cerevisiae
PPX1
-
Saccharomyces cerevisiae

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
1550
-
(Phosphate)n 37°C, recombinant enzyme Saccharomyces cerevisiae