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The expected taxonomic range for this enzyme is: Gallus gallus
Synonyms
CDPethanolamine:L-serine ethanolamine phosphotransferase, SEP synthetase, serine ethanolamine phosphate synthetase, serine ethanolamine phosphodiester synthase, serine ethanolaminephosphotransferase, serine-phosphinico-ethanolamine synthase, serinephosphoethanolamine synthase,
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CDPethanolamine:L-serine ethanolamine phosphotransferase
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serine ethanolamine phosphate synthetase
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serine ethanolamine phosphodiester synthase
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serine ethanolaminephosphotransferase
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serine-phosphinico-ethanolamine synthase
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serinephosphoethanolamine synthase
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CDP-ethanolamine + L-serine = CMP + L-serine-phosphoethanolamine
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substituted phospho group transfer
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CDP-ethanolamine:L-serine ethanolamine phosphotransferase
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CDP-2-amino-2-methylpropanol + L-serine
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CDP-ethanolamine + DL-alpha-methylserine
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CDP-ethanolamine + L-serine
CMP + L-serine-ethanolamine phosphate
CMP-aminoethylphosphonate + L-serine
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additional information
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CDP-choline and CDP-serine cannot replace CDP-ethanolamine, N-acetyl-L-serine, L-homoserine, 4-hydroxy-L-proline, 5-hydroxy-DL-lysine, 3-hydroxy-DL-glutamic acid, L-threonine, ethanolamine or 3-hydroxypropionic acid cannot replace serine
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CDP-ethanolamine + L-serine
CMP + L-serine-ethanolamine phosphate
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CDP-ethanolamine + L-serine
CMP + L-serine-ethanolamine phosphate
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CDP-ethanolamine + L-serine
CMP + L-serine-ethanolamine phosphate
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absolutely specific for serine, both stereoisomers are active
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CDP-ethanolamine + L-serine
CMP + L-serine-ethanolamine phosphate
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biosynthesis of L-serine ethanolamine phosphate
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CDP-ethanolamine + L-serine
CMP + L-serine-ethanolamine phosphate
CDP-ethanolamine + L-serine
CMP + L-serine-ethanolamine phosphate
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CDP-ethanolamine + L-serine
CMP + L-serine-ethanolamine phosphate
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biosynthesis of L-serine ethanolamine phosphate
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Mg2+
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bivalent cations are essential for activity, Mg2+ is most effective
Mg2+
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requires Mg2+ ions
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CETAB
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cationic detergent, strong inhibition
CMP
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competitive inhibition to CDPethanolamine, non-competitive inhibition to L-serine
Duponal
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strong inhibition
iodoacetamide
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1 mM, 6% remaining activity
iodoacetate
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1 mM, 42% remaining activity
L-alanine
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27-34% inhibition of the reaction
L-homoserine
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27-34% inhibition of the reaction
L-threonine
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27-34% inhibition of the reaction
Methylmercuric bromide
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0.1 mM, 6% remaining activity
Methylmercuric iodide
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0.1 mM, 3% remaining activity
N-Acetylimidazole
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10 mM, 8% remaining activity
N-ethylmaleimide
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0.2 mM, 25% remaining activity
p-hydroxymercuribenzoate
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0.1 mM, 2% remaining activity
phenylmercuric acetate
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0.1 mM, 2% remaining activity
Shell Nonidet P-40
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strong inhibition
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Sulfanilic acid
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diazotized, 0.2 mM, 36% remaining activity
additional information
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iodoacetate is less effective as inhibitor, DFP is no inhibitor
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0.085
CDP-ethanolamine
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pH 7.0, 37°C
0.011
CMP-aminoethylphosphonate
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pH 7.0, 37°C
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L-serine
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pH 7.0, 37°C
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6.5 - 9
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6.5 - 9
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55% of maximal activity at pH 6.5, 30% of maximal activity at pH 9.0
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chicken
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brenda
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brenda
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brenda
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brenda
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brenda
additional information
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no activity in liver, spleen, brain, oviduct, blood, and heart
brenda
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brenda
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55
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heat-labile, inactivated after 15 min
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stable to freezing, aggregates on thawing
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0°C, stable to freezing
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4°C, enzyme preparartion remains active
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Rosenberg, H.; Ennor, A.H.
On the biosynthesis of L-serine ethanolamine phosphate in the chicken
Biochim. Biophys. Acta
115
23-32
1966
Gallus gallus
brenda
Allen, A.K.; Rosenberg, H.
The mechanism of action and some properties of serine ethanolamine phosphate synthetase
Biochim. Biophys. Acta
151
504-519
1968
Gallus gallus
brenda
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2.7.8.4 serine-phosphoethanolamine synthase
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