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1.11.1.11: L-ascorbate peroxidase

This is an abbreviated version!
For detailed information about L-ascorbate peroxidase, go to the full flat file.

Word Map on EC 1.11.1.11

Reaction

2 L-ascorbate +

H2O2
+ 2 H+ = 2 monodehydroascorbate + 2 H2O

Synonyms

Am-pAPX1, APEX2, APOX, APX, APX 1, APX 2, APX1, APX2, APX3, APX4, APX5, APX6, APX7, APx8, APXS, APXT, ascorbate peroxidase, ascorbate peroxidase 1, ascorbate peroxidase 2, ascorbate peroxidase 3, ascorbate peroxidase 4, ascorbate peroxidase 5, ascorbate peroxidase 6, ascorbate peroxidase 7, ascorbate peroxidase 8, ascorbate peroxidase6, ascorbic acid peroxidase, At1g07890, AT1G77490, AT3G09640, AT4G08390, AT4G32320, AT4G35000, AT4G35970, AtAPx08, AtAPX1, AtAPX2, AtAPX3, AtAPX5, AtAPX6, AtSAPX, AtstAPX, AtTAPX, cAPX, cAPX 2, CmstAPX, CrAPX4, CreAPX1, CreAPX2, CreAPX4, CreAPXheme, CsAPX1, cytoplasmic ascorbate peroxidase 1, cytosolic ascorbate peroxidase, GhAPX1, glyoxysomal APX, HvAPX1, L-ascorbate peroxidase, L-ascorbate peroxidase 3, L-ascorbate peroxidase 5, L-ascorbate peroxidase 6, L-ascorbate peroxidase, heme-containing, L-ascorbic acid peroxidase, L-ascorbic acid-specific peroxidase, LmAPX, MaAPX1, OsAPx1, OsAPx2, OsAPx3, OsAPx4, OsAPx5, OsAPx6, OsAPx7, OsAPx8, OsAPXa, OsAPXb, pAPX, Pavirv00022559m, peroxidase, ascorbate, peroxisomal ascorbate peroxidase, PgAPX1, PHYPA_001206, PHYPA_001884, PHYPA_021776, PHYPA_024580, PHYPA_024582, Potri.002G081900, Potri.004G174500, Potri.005G112200, Potri.005G161900, Potri.005G179200, Potri.006G089000, Potri.006G132200, Potri.006G254500, Potri.009G015400, Potri.009G134100, Potri.016G084800, PpAPX, PpAPX-S, PpAPX2, PpAPX2.1, PpAPX2.2, PpAPX3, PpAPX6-related, PtAPX-S.1, PtAPX-S.2, PtAPX-TL29, PtAPX.3, PtAPX1.1, PtAPX1.2, PtAPX2, PtAPX3, PtAPX5, PtAPX5-like, PtAPX6 related, PtotAPX, RcAPX, sAPX, stromal APX, stromal ascorbate peroxidase, stromal ascorbate peroxidases, TaAPX, tAPX, thylakoid ascorbate peroxidase, thylakoid membrane-bound ascorbate peroxidases, thylakoid-bound ascorbate peroxidase

ECTree

     1 Oxidoreductases
         1.11 Acting on a peroxide as acceptor
             1.11.1 Peroxidases
                1.11.1.11 L-ascorbate peroxidase

Inhibitors

Inhibitors on EC 1.11.1.11 - L-ascorbate peroxidase

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INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
2,2,6,6-tetramethylpiperidinyl-1-oxide
formation of 2,2,6,6-tetramethylpiperidinyl-1-oxy-adducts and subsequent oxidation of the cysteine residue located near the propionate group of heme leads to loss of enzyme activity
2,2,6,6-tetramethylpiperidinyl-1-oxyl radical
-
formation of 2,2,6,6-tetramethylpiperidinyl-1-oxy-adducts and subsequent oxidation of the cysteine residue located near the propionate group of heme leads to loss of enzyme activity
2,6-dichloroisonicotinic acid
-
54% inhibition at 0.1 mM, 95% inhibition at 1 mM, the inhibition is not time-dependent
2,6-dihydroxybenzoic acid
-
biologically active, 72% inhibition at 0.2 mM
2-mercaptoethanol
2-nitrobenzoic acid
-
1.48% activity remaining at 1 mM
3,3'-dithiobis(6-nitrobenzoic acid)
-
5 mM, 80% residual activity, APX 1, 24% residual activity, APX 2
3,5-dichlorosalicylic acid
-
biologically active, 59% inhibition at 0.2 mM
3-Hydroxybenzoic acid
-
biologically inactive, 28% inhibition at 0.2 mM
4-aminosalicylic acid
-
biologically inactive, 9% inhibition at 0.2 mM
4-chlorosalicylic acid
-
biologically active, 58% inhibition at 0.2 mM
5,5'-dithiobis(2-nitrobenzoic acid)
5-chlorosalicylic acid
-
biologically active, 73% inhibition at 0.2 mM
azide
beta-mercaptoethanol
-
29% inhibition at 3 mM
Br-
-
marked inhibition at 1 mM
Cd2+
-
inhibits the enzyme at 1-10 mM
CO
-
potent inhibitor
Co2+
-
inhibits the enzyme at 1-10 mM
Cu2+
-
inhibits the enzyme at 1 mM, complete inhibition at 5 mM
cysteine
diethylenetriamine pentaacetic acid
-
9% inhibition at 5 mM
dithioerythritol
dithiothreitol
Fe3+
-
inhibits the enzyme at 1-10 mM
hydroxylamine
Hydroxyurea
imidazole
enzyme shows a decrease in its activity with increasing imidazole concentration, approximately 50% activity is lost in the presence of 0.8 M imidazole
iodoacetamide
iodoacetate
K+
-
inhibits the enzyme at 1-10 mM
L-cysteine
Mersalyl
-
58% inhibition at 0.005 mM, 100% inhibition at 0.05 mM
N-ethylmaleimide
-
33% inhibition at 0.05 mM, 28% inhibition at 0.5 mM
Na+
-
inhibits the enzyme at 1-10 mM
Na2HAsO4
-
inhibition in the range of 0.01-0.5 mM
p-Aminophenol
p-chloromercuribenzoate
p-chloromercuriphenyl sulfonic acid
-
100% inhibition at 0.05 mM, recombinant enzyme 1 and 2
p-hydroxymercuribenzoate
-
43% inhibition at 0.005 mM, 100% inhibition at 0.05 mM
Pb2+
-
inhibits the enzyme at 1-5 mM, almost complete inhibition at 10 mM
phenylhydrazine
a suicide substrate
reduced glutathione
salicylic acid
Sn2+
-
inhibits the enzyme at 1 mM, complete inhibition at 5 mM
Sodium azide
sodium nitroprusside
-
partial
additional information
-