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Literature summary for 3.1.1.7 extracted from

  • Xuereb, B.; Noury, P.; Felten, V.; Garric, J.; Geffard, O.
    Cholinesterase activity in Gammarus pulex (Crustacea Amphipoda): characterization and effects of chlorpyrifos (2007), Toxicology, 236, 178-189.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
BW284c51 selective inhibitor Gammarus pulex
chlorpyrifos a widely used organophosphorous pesticide, complete inhibition at 0.1 mM Gammarus pulex
eserine sulfate selective inhibitor Gammarus pulex
additional information no inhibition by iso-OMPA, lethal effects due to enzyme inhibition in vivo appear at inhibition levels over 50% Gammarus pulex

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.1065
-
acetylcholine iodide pH 7.8, 25°C Gammarus pulex
0.2677
-
Propionylcholine iodide pH 7.8, 25°C Gammarus pulex

Organism

Organism UniProt Comment Textmining
Gammarus pulex
-
-
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.0045
-
substrate butyrylcholine iodide Gammarus pulex
0.024
-
substrate propionylcholine iodide Gammarus pulex
0.0478
-
substrate acetylcholine iodide Gammarus pulex

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
acetylcholine iodide + H2O
-
Gammarus pulex acetate + choline iodide
-
?
acetylthiocholine iodide + H2O highly preferred substrate Gammarus pulex thiocholine iodide + acetate
-
?
butyrylthiocholine iodide + H2O low activity Gammarus pulex thiocholine iodide + butyrate
-
?
additional information lethal effects due to enzyme inhibition in vivo appear at inhibition levels over 50% Gammarus pulex ?
-
?
propionylcholine iodide + H2O
-
Gammarus pulex choline iodide + propionate
-
?
propionylthiocholine iodide + H2O
-
Gammarus pulex thiocholine iodide + propionate
-
?

Synonyms

Synonyms Comment Organism
acetylcholinesterase
-
Gammarus pulex
AChE
-
Gammarus pulex
cholinesterase
-
Gammarus pulex

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
25
-
assay at Gammarus pulex

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.8
-
assay at Gammarus pulex

IC50 Value

IC50 Value IC50 Value Maximum Comment Organism Inhibitor Structure
0.00574
-
pH 7.8, 25°C, versus acetylcholine iodide Gammarus pulex BW284c51
0.00773
-
pH 7.8, 25°C, versus propionylcholine iodide Gammarus pulex BW284c51