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Literature summary for 3.1.1.55 extracted from

  • Benedito, M.A.
    Fluorimetric determination of tissue distribution and differences between the activity of aspirin esterases I and II in mice and rats (1997), J. Pharm. Pharmacol., 49, 273-276.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.33
-
Acetyl salicylate pH 7.4, 37°C, isozyme I Rattus norvegicus
8.85
-
Acetyl salicylate pH 5.5, 37°C, isozyme II Rattus norvegicus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
acetyl salicylate + H2O Mus musculus i.e. aspirin salicylate + acetate
-
?
acetyl salicylate + H2O Rattus norvegicus i.e. aspirin salicylate + acetate
-
?

Organism

Organism UniProt Comment Textmining
Mus musculus
-
2 isozymes I and II
-
Rattus norvegicus
-
2 isozymes I and II
-

Source Tissue

Source Tissue Comment Organism Textmining
adrenal gland only isozyme II Rattus norvegicus
-
brain
-
Rattus norvegicus
-
kidney
-
Mus musculus
-
kidney
-
Rattus norvegicus
-
liver
-
Mus musculus
-
liver
-
Rattus norvegicus
-
plasma only isozyme II Rattus norvegicus
-
serum
-
Rattus norvegicus
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.025
-
isozyme I, kidney Mus musculus
0.035
-
isozyme II, kidney Rattus norvegicus
0.036
-
isozyme I, kidney Rattus norvegicus
0.0385
-
isozyme I, liver Mus musculus
0.041
-
isozyme II, liver Rattus norvegicus
0.049
-
isozyme I, liver Rattus norvegicus
0.077
-
isozyme II, liver Mus musculus
0.08
-
isozyme II, kidney Mus musculus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
acetyl salicylate + H2O i.e. aspirin Mus musculus salicylate + acetate
-
?
acetyl salicylate + H2O i.e. aspirin Rattus norvegicus salicylate + acetate
-
?
acetylsalicylate + H2O i.e. aspirin Mus musculus salicylate + acetate
-
?
acetylsalicylate + H2O i.e. aspirin Rattus norvegicus salicylate + acetate
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
37
-
assay at Mus musculus
37
-
assay at Rattus norvegicus
37
-
isozyme I and II Mus musculus
37
-
isozyme I and II Rattus norvegicus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5
-
isozyme II, assay at Mus musculus
5.5
-
isozyme II, assay at Rattus norvegicus
7.4
-
isozyme I, assay at Mus musculus
7.4
-
isozyme I, assay at Rattus norvegicus