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Literature summary for 1.11.1.7 extracted from

  • Suzuki, T.; Honda, Y.; Mukasa, Y.; Kim, S.J.
    Characterization of peroxidase in buckwheat seed (2006), Phytochemistry, 67, 219-224.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
NH4+ 0.18 mM, activation to 148% of control Fagopyrum esculentum

Inhibitors

Inhibitors Comment Organism Structure
histidine 0.18 mM, 43% inhibition of the activity with quercetin, 13% inhibition of the activity with o-dianisidine, isoenzyme POX II; 0.18 mM, 71% inhibition of the activity with quercetin, 95% inhibition of the activity with o-dianisidine, isoenzyme POX I Fagopyrum esculentum
imidazole 0.18 mM, 24% inhibition of the activity with quercetin, 81% inhibition of the activity with o-dianisidine, isoenzyme POX II; 0.18 mM, 72% inhibition of the activity with quercetin, 97% inhibition of the activity with o-dianisidine, isoenzyme POX I Fagopyrum esculentum
linoleic acid 3.6 mM, 76% inhibition of the activity with quercetin, 48% inhibition of the activity with o-dianisidine, isoenzyme POX II; 3.6 mM, no inhibition of the activity with quercetin, 32% inhibition of the activity with o-dianisidine, isoenzyme POX I Fagopyrum esculentum
linolenic acid 3.6 mM, 16% inhibition of the activity with quercetin, 21% inhibition of the activity with o-dianisidine, isoenzyme POX I; 3.6 mM, 35% inhibition of the activity with quercetin, 37% inhibition of the activity with o-dianisidine, isoenzyme POX II Fagopyrum esculentum
NH4+ 0.18 mM, 6% inhibition of the activity with quercetin; 0.18 mM, no inhibition of the activity with quercetin, 27% inhibition of the activity with o-dianisidine, isoenzyme POX I Fagopyrum esculentum
oleic acid 3.6 mM, isoenzyme POX I, 62% inhibition of the activity with quercetin, 19% inhibition of the activity with o-dianisidine, isoenzyme POX I; 3.6 mM, isoenzyme POX II, 72% inhibition of the activity with quercetin, 41% inhibition of the activity with o-dianisidine, isoenzyme POX II Fagopyrum esculentum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.016
-
reduced 2,2'-azino-bis-(3-ethylbenzthiazole-6-sulfonic acid) isoenzyme POX II Fagopyrum esculentum
0.028
-
quercetin isoenzyme POX II Fagopyrum esculentum
0.029
-
ascorbic acid isoenzyme POX II Fagopyrum esculentum
0.043
-
ascorbic acid isoenzyme POX I Fagopyrum esculentum
0.071
-
quercetin isoenzyme POX I Fagopyrum esculentum
0.137
-
o-Dianisidine isoenzyme POX II Fagopyrum esculentum
0.202
-
guaiacol isoenzyme POX II Fagopyrum esculentum
0.229
-
o-Dianisidine isoenzyme POX I Fagopyrum esculentum
0.288
-
guaiacol isoenzyme POX I Fagopyrum esculentum

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
46000
-
isoenzyme POX I, gel filtration Fagopyrum esculentum
58100
-
isoenzyme POX II, gel filtration Fagopyrum esculentum

Organism

Organism UniProt Comment Textmining
Fagopyrum esculentum
-
Moench var. Kitawasesoba
-

Purification (Commentary)

Purification (Comment) Organism
isoenzyme POX I Fagopyrum esculentum
isoenzyme POX II Fagopyrum esculentum

Source Tissue

Source Tissue Comment Organism Textmining
seed isoenzyme POX I Fagopyrum esculentum
-
seed isoenzyme POX II Fagopyrum esculentum
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ascorbic acid + H2O isoenzyme POX I Fagopyrum esculentum ?
-
?
ascorbic acid + H2O isoenzyme POX II Fagopyrum esculentum ?
-
?
guaiacol + H2O2 isoenzyme POX I Fagopyrum esculentum ?
-
?
guaiacol + H2O2 isoenzyme POX II Fagopyrum esculentum ?
-
?
additional information isoenzyme POX I shows no activity with reduced 2,2'-azino-bis-(3-ethylbenzthiazole-6-sulfonic acid) Fagopyrum esculentum ?
-
?
o-dianisidine + H2O2 isoenzyme POX I Fagopyrum esculentum ?
-
?
o-dianisidine + H2O2 isoenzyme POX II Fagopyrum esculentum ?
-
?
quercetin + H2O isoenzyme POX I Fagopyrum esculentum ?
-
?
quercetin + H2O isoenzyme POX II Fagopyrum esculentum ?
-
?
reduced 2,2'-azino-bis-(3-ethylbenzthiazole-6-sulfonic acid) + H2O2 isoenzyme POX II Fagopyrum esculentum oxidized 2,2'-azino-bis-(3-ethylbenzthiazole-6-sulfonic acid) + H2O
-
?

Synonyms

Synonyms Comment Organism
POX I
-
Fagopyrum esculentum
POX II
-
Fagopyrum esculentum

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
10
-
isoenzyme POX II Fagopyrum esculentum
30
-
isoenzyme POX I Fagopyrum esculentum

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
-
50 more than 50% of the activity of POX I is retained in the temperature range of 0–50°C Fagopyrum esculentum

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
-
30 isoenzyme POX I is stable Fagopyrum esculentum
20
-
isoenzyme POX II is stable Fagopyrum esculentum
30
-
isoenzyme POX II is unstable above Fagopyrum esculentum
40
-
isoenzyme POX I is unstable Fagopyrum esculentum

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
3
-
activity with reduced 2,2'-azino-bis-(3-ethylbenzthiazole-6-sulfonic acid), isoenzyme POX II Fagopyrum esculentum
4.5
-
activity with quercetin, isoenzyme POX II Fagopyrum esculentum
5
-
activity with o-dianisidine, isoenzyme POX II Fagopyrum esculentum
6
-
activity with o-dianisidine, isoenzyme POX I Fagopyrum esculentum
7
-
activity with ascorbic acid, isoenzyme POX I Fagopyrum esculentum
7
-
activity with ascorbic acid, isoenzyme POX II Fagopyrum esculentum
8
-
activity with quercetin, isoenzyme POX I Fagopyrum esculentum
9
-
activity with guaiacol, isoenzyme POX I Fagopyrum esculentum
9
-
activity with guaiacol, isoenzyme POX II Fagopyrum esculentum