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Literature summary for 2.7.1.82 extracted from

  • Ramabrahmam, P.; Subrahmanyam, D.
    Ethanolamine kinase from Culex pipiens fatigans (1981), Arch. Biochem. Biophys., 207, 55-62.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
2-mercaptoethanol stimulates Culex quinquefasciatus
cysteine stimulates Culex quinquefasciatus
glutathione stimulates Culex quinquefasciatus

General Stability

General Stability Organism
inactivation by repeated freezing and thawing Culex quinquefasciatus

Inhibitors

Inhibitors Comment Organism Structure
adenosine
-
Culex quinquefasciatus
ADP
-
Culex quinquefasciatus
AMP
-
Culex quinquefasciatus
ATP above 8 mM Culex quinquefasciatus
Ca2+ inhibits activating effect of Mg2+ Culex quinquefasciatus
choline not Culex quinquefasciatus
Cu2+ inhibits activating effect of Mg2+ Culex quinquefasciatus
KCl at 10 mM Culex quinquefasciatus
Mn2+ presence of Mn2+ at lower concentrations of Mg2+ has an additive stimulating effect, at higher concentrations of Mg2+, Mn2+ inhibits Culex quinquefasciatus
additional information not inhibitory: N-ethyl-N,N-dibutylethanolamine; not inhibitory: N-methyl-N-butylethanolamine; not inhibitory: N-methyl-N,N-diisopropylethanolamine; not inhibitory: N,N-diisopropylethanolamine; not inhibitory: N,N,N-triethanolamine; not inhibitory: serine Culex quinquefasciatus
N-ethylmaleimide
-
Culex quinquefasciatus
N-Methyl-N-isopropylethanolamine
-
Culex quinquefasciatus
Ni2+ inhibits activating effect of Mg2+ Culex quinquefasciatus
p-chloromercuribenzoate
-
Culex quinquefasciatus
phosphorylcholine not Culex quinquefasciatus
Phosphorylethanolamine
-
Culex quinquefasciatus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information
-
Culex quinquefasciatus

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ absolute requirement for Mg2+ and Mn2+, Mg2+ is the most active divalent cation at concentrations above 5 mM, optimum: 18 mM, Mn2+ has a greater stimulatory effect on the enzyme than Mg2+ at levels less than 5 mM, presence of Mn2+ at lower concentrations of Mg2+ has an additive effect, at higher concentrations of Mg2+, Mn2+ inhibits Culex quinquefasciatus
Mn2+ absolute requirement for Mg2+ and Mn2+, Mg2+ is the most active divalent cation at concentrations above 5 mM, optimum: 18 mM, Mn2+ has a greater stimulatory effect on the enzyme than Mg2+ at levels less than 5 mM, presence of Mn2+ at lower concentrations of Mg2+ has an additive effect, at higher concentrations of Mg2+, Mn2+ inhibits Culex quinquefasciatus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
44000
-
gel filtration Culex quinquefasciatus

Organism

Organism UniProt Comment Textmining
Culex quinquefasciatus
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
larva
-
Culex quinquefasciatus
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Culex quinquefasciatus

Storage Stability

Storage Stability Organism
-20°C, 10 days, stable Culex quinquefasciatus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + ethanolamine
-
Culex quinquefasciatus ADP + O-phosphoethanolamine
-
?
GTP + ethanolamine 13% of the activity with ATP Culex quinquefasciatus GDP + O-phosphoethanolamine
-
?
ITP + ethanolamine 45% of the activity with ATP Culex quinquefasciatus IDP + O-phosphoethanolamine
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
37
-
-
Culex quinquefasciatus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
60
-
20 min, complete inactivation Culex quinquefasciatus