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Literature summary for 1.11.1.7 extracted from

  • Mohamed, S.A.; El-Badry, M.O.; Drees, E.A.; Fahmy, A.S.
    Properties of a cationic peroxidase from Citrus jambhiri cv. Adalia (2008), Appl. Biochem. Biotechnol., 150, 127-137.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Cu2+ 4% inhibition at 5 mM, at 37°C Citrus jambhiri
Hg2+ 80% inhibition at 5 mM, at 37°C Citrus jambhiri
Li+ 22% inhibition at 5 mM, at 37°C Citrus jambhiri
Ni2+ 10% inhibition at 5 mM, at 37°C Citrus jambhiri
Zn2+ 13% inhibition at 5 mM, at 37°C Citrus jambhiri

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.54
-
H2O2 in 50 mM sodium acetate buffer, at pH 5.5 Citrus jambhiri
2 3 pyrogallol in 50 mM sodium acetate buffer, at pH 5.5 Citrus jambhiri
2.85
-
o-phenylenediamine in 50 mM sodium acetate buffer, at pH 5.5 Citrus jambhiri
5
-
guaiacol in 50 mM sodium acetate buffer, at pH 5.5 Citrus jambhiri
11
-
o-Dianisidine in 50 mM sodium acetate buffer, at pH 5.5 Citrus jambhiri
125
-
catechol in 50 mM sodium acetate buffer, at pH 5.5 Citrus jambhiri

Metals/Ions

Metals/Ions Comment Organism Structure
Ba2+ 8% increased activity at 5 mM, at 37°C Citrus jambhiri
additional information not stimulated by Co2+, Ca2+, Mn2+, and Fe2+ Citrus jambhiri

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
56000
-
SDS-PAGE Citrus jambhiri

Organism

Organism UniProt Comment Textmining
Citrus jambhiri
-
cultivar Adalia
-

Purification (Commentary)

Purification (Comment) Organism
ammonium sulfate precipitation, DEAE-cellulose chromatography, carboxymethyl-cellulose column chromatography, and Sephacryl S-200 gel filtration Citrus jambhiri

Source Tissue

Source Tissue Comment Organism Textmining
exocarp
-
Citrus jambhiri
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
the crude extract has a specific activity of 751 units/mg protein, the 37.6fold purified enzyme has a specific activity of 28261 units/mg protein 1 unit of peroxidase activity is defined as the amount of enzyme that increases the optical density 1.0 per min Citrus jambhiri

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
catechol + H2O2 4.0% activity compared to guaiacol Citrus jambhiri ?
-
?
guaiacol + H2O2 100% activity Citrus jambhiri tetraguaiacol + H2O
-
?
additional information not active towards L-tyrosine, ascorbic acid, alpha-naphthylamine, p-aminoantipyrine, potassium ferrocyanide, potassium iodide, and NADH Citrus jambhiri ?
-
?
o-dianisidine + H2O2 93.7% activity compared to guaiacol Citrus jambhiri ?
-
?
o-phenylenediamine + H2O2 171.7% activity compared to guaiacol Citrus jambhiri ?
-
?
pyrogallol + H2O2 6.2% activity compared to guaiacol Citrus jambhiri purpurogallin + H2O
-
?

Synonyms

Synonyms Comment Organism
cationic peroxidase
-
Citrus jambhiri
POII
-
Citrus jambhiri

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
40
-
-
Citrus jambhiri

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
10 70 stable at 10-40°C and unstable above 50°C, 70-80% of POII activity is lost at 50, 60, and 70°C after 15, 10, and 5 min of incubation, respectively Citrus jambhiri

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5
-
-
Citrus jambhiri