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Literature summary for 3.1.3.26 extracted from

  • Eskin, N.A.M.; Johnson, S.
    Isolation and partial purification of phytase from Vicia faba minor (1987), Food Chem., 26, 149-155.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
Ca2+
-
Vicia faba
Co2+
-
Vicia faba
Cu2+
-
Vicia faba
Fe2+
-
Vicia faba
Mg2+
-
Vicia faba
myo-inositol hexakisphosphate above 1.5 mM Vicia faba
Zn2+
-
Vicia faba

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.017
-
myo-inositol hexakisphosphate
-
Vicia faba

Organism

Organism UniProt Comment Textmining
Vicia faba
-
The enzyme may be a 3-phytase (EC 3.1.3.8), or a 4-phytase (synonym 6-phytase, EC 3.1.3.26). The product of the hydrolysis of myo-inositol hexakisphosphate to 1D-myo-inositol 1,2,4,5,6-pentakisphosphate or alternatively 1D-myo-inositol 1,2,3,5,6-pentakisphosphate has not been identified.
-
Vicia faba
-
minor
-

Purification (Commentary)

Purification (Comment) Organism
partial Vicia faba

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Vicia faba

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
myo-inositol hexakisphosphate + H2O
-
Vicia faba myo-inositol pentakisphosphate + phosphate
-
?

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
55
-
10 min, 25% loss of activity Vicia faba
70
-
10 min, complete inactivation Vicia faba

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5
-
-
Vicia faba