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Literature summary for 1.11.1.6 extracted from

  • Claiborne, A.; Fridovich, I.
    Purification of the o-dianisidine peroxidase from Escherichia coli B: Physicochemical characterization and analysis of its dual catalatic and peroxidatic activities (1979), J. Biol. Chem., 254, 4245-4252.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
histidine stimulation Escherichia coli
imidazole 2fold activation at 10 mM Escherichia coli
Tris stimulation at 10 mM Escherichia coli

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.9
-
H2O2
-
Escherichia coli

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
84000
-
4 * 84000, SDS-PAGE Escherichia coli
337000
-
sedimentation equillibrium analysis Escherichia coli

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
H2O2 Escherichia coli bifunctional catalase-peroxidase O2 + H2O
-
?

Organism

Organism UniProt Comment Textmining
Escherichia coli
-
-
-

Purification (Commentary)

Purification (Comment) Organism
to homogeneity, chromatography steps Escherichia coli

Source Tissue

Source Tissue Comment Organism Textmining
cell culture
-
Escherichia coli
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
15.2
-
peroxidatic activity Escherichia coli
1486
-
catalatic activity Escherichia coli

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
H2O2 bifunctional catalase-peroxidase Escherichia coli O2 + H2O
-
?
o-dianisidine + H2O2 peroxidatic activity Escherichia coli ? + H2O
-
?

Subunits

Subunits Comment Organism
tetramer 4 * 84000, SDS-PAGE Escherichia coli

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
16300
-
H2O2
-
Escherichia coli

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.5
-
peroxidatic activity Escherichia coli
7.5
-
catalatic activity Escherichia coli

Cofactor

Cofactor Comment Organism Structure
heme 2.07 molecules protoheme IX per tetramer Escherichia coli