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Literature summary for 3.1.3.8 extracted from

  • Ullah, A.H.J.; Sethumadhavan, K.
    PhyA gene product of Aspergillus ficuum and Peniophora lycii produces dissimilar phytases (2003), Biochem. Biophys. Res. Commun., 303, 463-468.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expression of a truncated enzyme form, with a deletion of the 20 amino acid residues from the N-terminus of the protein Aspergillus ficuum

Inhibitors

Inhibitors Comment Organism Structure
myo-inositol hexasulfate
-
Aspergillus ficuum
vanadate
-
Aspergillus ficuum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.027
-
myo-inositol hexakisphosphate
-
Aspergillus ficuum

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
85000
-
1 * 85000, SDS-PAGE Aspergillus ficuum
86600
-
dynamic light scattering Aspergillus ficuum

Organism

Organism UniProt Comment Textmining
Aspergillus ficuum
-
-
-

Posttranslational Modification

Posttranslational Modification Comment Organism
glycoprotein
-
Aspergillus ficuum

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
216
-
-
Aspergillus ficuum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
myo-inositol hexakisphosphate + H2O
-
Aspergillus ficuum ? + phosphate
-
?

Subunits

Subunits Comment Organism
monomer 1 * 85000, SDS-PAGE Aspergillus ficuum

Synonyms

Synonyms Comment Organism
3-phytase
-
Aspergillus ficuum

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
58
-
-
Aspergillus ficuum

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
37 62 37°C: about 40% of maximal activity, 62°C: about 45% of maximal activity Aspergillus ficuum

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
70
-
10 min, 60% loss of activity Aspergillus ficuum

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
350
-
myo-inositol hexakisphosphate
-
Aspergillus ficuum

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
2.5
-
and a second higher pH optimum at pH 5.5 Aspergillus ficuum
5.5
-
and a second lower pH-optimum at pH 2.5 Aspergillus ficuum

pH Range

pH Minimum pH Maximum Comment Organism
2 6 2.0: about 55% of maximal activity, pH 6.0: 85% of maximal activity Aspergillus ficuum

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
0.1
-
vanadate
-
Aspergillus ficuum

pI Value

Organism Comment pI Value Maximum pI Value
Aspergillus ficuum
-
-
4.94