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Literature summary for 1.3.8.13 extracted from

  • Roth, S.; Jung, K.; Jung, H.; Hommel, R.; Kleber, H.
    Crotonobetaine reductase from Escherichia coli - a new inducible enzyme of anaerobic metabolization of L(-)-carnitine (1994), Antonie van Leeuwenhoek, 65, 63-69.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
2-mercaptoethanol 6.6 mM, 48% inhibition Escherichia coli
choline 200 mM, about 50% residual activity Escherichia coli
Cu2+ 1 mM, 100% inhibition Escherichia coli
D-carnitine
-
Escherichia coli
dithioerythritol 6.6 mM, 85% inhibition Escherichia coli
EDTA 3.3 mM, 32% inhibition Escherichia coli
Fe2+ 1 mM, 94% inhibition Escherichia coli
gamma-butyrobetaine competitive, 100 mM, complete loss of activity Escherichia coli
glutathione 6.6 mM, 67% inhibition Escherichia coli
Hg2+ 1 mM, 97% inhibition Escherichia coli
Tris-HCl
-
Escherichia coli
Zn2+ 1 mM, 58% inhibition Escherichia coli

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
10.7
-
crotonobetaine pH 8.0, 37°C Escherichia coli

Localization

Localization Comment Organism GeneOntology No. Textmining
cytoplasm
-
Escherichia coli 5737
-

Organism

Organism UniProt Comment Textmining
Escherichia coli P60584
-
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
crotonobetaine + reduced benzylviologen
-
Escherichia coli gamma-butyrobetaine + oxidized benzylviologen
-
?
gamma-butyrobetainyl-CoA + electron-transfer flavoprotein
-
Escherichia coli crotonobetainyl-CoA + reduced electron-transfer flavoprotein
-
?

Synonyms

Synonyms Comment Organism
caiA
-
Escherichia coli
crotonobetaine reductase
-
Escherichia coli

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
40 45
-
Escherichia coli

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
additional information
-
Tris-HCl buffer is inhibitory Escherichia coli
7.8
-
potassium phosphate buffer Escherichia coli

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
0.03
-
gamma-butyrobetaine pH 8.0, 37°C Escherichia coli

Expression

Organism Comment Expression
Escherichia coli inducible enzyme detectable only in cells grown anaerobically in the presence of L-carnitine or crotonobetaine as inducers additional information
Escherichia coli fumarate causes a stimulation of growth and an increased expression of crotonobetaine reductase up