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Literature summary extracted from

  • Giovanelli, J.; Veluthambi, K.; Thompson, G.A.; Mudd, S.H.; Datko, A.H.
    Threonine synthase of Lemna paucicostata Hegelm. 6746 (1984), Plant Physiol., 76, 285-292.
    View publication on PubMedView publication on EuropePMC

Activating Compound

EC Number Activating Compound Comment Organism Structure
4.2.3.1 S-adenosylmethionine allosteric activator, maximal activation at 0.1-0.2 mM Lemna aequinoctialis

General Stability

EC Number General Stability Organism
4.2.3.1 bovine serum albumine stabilizes Lemna aequinoctialis

Inhibitors

EC Number Inhibitors Comment Organism Structure
4.2.3.1 L-cysteine 26% inhibition at 1 mM, reversible Lemna aequinoctialis
4.2.3.1 O-phospho-DL-threonine
-
Lemna aequinoctialis
4.2.3.1 O-phospho-L-serine
-
Lemna aequinoctialis
4.2.3.1 Vinylglycine 22% inhibition at 10 mM Lemna aequinoctialis

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
4.2.3.1 0.002 0.007 O-phospho-L-homoserine at saturating S-adenosylmethionine concentrations Lemna aequinoctialis

Organism

EC Number Organism UniProt Comment Textmining
4.2.3.1 Lemna aequinoctialis
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
4.2.3.1
-
Lemna aequinoctialis

Reaction

EC Number Reaction Comment Organism Reaction ID
4.2.3.1 O-phospho-L-homoserine + H2O = L-threonine + phosphate mechanism Lemna aequinoctialis

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
4.2.3.1 0.0261
-
-
Lemna aequinoctialis

Storage Stability

EC Number Storage Stability Organism
4.2.3.1 -80°C, pH 7.8, several months Lemna aequinoctialis

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
4.2.3.1 O-phospho-L-homoserine + H2O
-
Lemna aequinoctialis L-threonine + phosphate
-
ir

Subunits

EC Number Subunits Comment Organism
4.2.3.1 More amino acid analysis Lemna aequinoctialis

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
4.2.3.1 8
-
-
Lemna aequinoctialis

pH Range

EC Number pH Minimum pH Maximum Comment Organism
4.2.3.1 7 8.5
-
Lemna aequinoctialis