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Literature summary 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

EC Number Activating Compound Comment Organism Structure
2.7.1.82 2-mercaptoethanol stimulates Culex quinquefasciatus
2.7.1.82 cysteine stimulates Culex quinquefasciatus
2.7.1.82 glutathione stimulates Culex quinquefasciatus

General Stability

EC Number General Stability Organism
2.7.1.82 inactivation by repeated freezing and thawing Culex quinquefasciatus

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.7.1.32 N-Methyl-N,N-diisopropylethanolamine
-
Culex quinquefasciatus
2.7.1.32 N-Methyl-N-isopropylethanolamine
-
Culex quinquefasciatus
2.7.1.32 serine not Culex quinquefasciatus
2.7.1.82 adenosine
-
Culex quinquefasciatus
2.7.1.82 ADP
-
Culex quinquefasciatus
2.7.1.82 AMP
-
Culex quinquefasciatus
2.7.1.82 ATP above 8 mM Culex quinquefasciatus
2.7.1.82 Ca2+ inhibits activating effect of Mg2+ Culex quinquefasciatus
2.7.1.82 choline not Culex quinquefasciatus
2.7.1.82 Cu2+ inhibits activating effect of Mg2+ Culex quinquefasciatus
2.7.1.82 KCl at 10 mM Culex quinquefasciatus
2.7.1.82 Mn2+ presence of Mn2+ at lower concentrations of Mg2+ has an additive stimulating effect, at higher concentrations of Mg2+, Mn2+ inhibits Culex quinquefasciatus
2.7.1.82 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
2.7.1.82 N-ethylmaleimide
-
Culex quinquefasciatus
2.7.1.82 N-Methyl-N-isopropylethanolamine
-
Culex quinquefasciatus
2.7.1.82 Ni2+ inhibits activating effect of Mg2+ Culex quinquefasciatus
2.7.1.82 p-chloromercuribenzoate
-
Culex quinquefasciatus
2.7.1.82 phosphorylcholine not Culex quinquefasciatus
2.7.1.82 Phosphorylethanolamine
-
Culex quinquefasciatus

KM Value [mM]

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

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
2.7.1.82 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
2.7.1.82 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]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
2.7.1.82 44000
-
gel filtration Culex quinquefasciatus

Organism

EC Number Organism UniProt Comment Textmining
2.7.1.32 Culex quinquefasciatus
-
-
-
2.7.1.82 Culex quinquefasciatus
-
-
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.7.1.32 larva
-
Culex quinquefasciatus
-
2.7.1.82 larva
-
Culex quinquefasciatus
-

Specific Activity [micromol/min/mg]

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

Storage Stability

EC Number Storage Stability Organism
2.7.1.82 -20°C, 10 days, stable Culex quinquefasciatus

Substrates and Products (Substrate)

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

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
2.7.1.82 37
-
-
Culex quinquefasciatus

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
2.7.1.82 60
-
20 min, complete inactivation Culex quinquefasciatus