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Literature summary for 2.6.1.46 extracted from

  • Ono, H.; Sawada, K.; Khunajakr, N.; Tao, T.; Yamamoto, M.; Hiramoto, M.; Shinmyo, A.; Takano, M.; Murooka, Y.
    Characterization of biosynthetic enzymes for ectoine as a compatible solute in a moderately halophilic eubacterium, Halomonas elongata (1999), J. Bacteriol., 181, 91-99.
    View publication on PubMedView publication on EuropePMC

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
4.5
-
L-2-amino-4-oxobutanoate pH 8.5, 25ºC Halomonas elongata
9.1
-
L-glutamate pH 8.5, 25ºC Halomonas elongata

Metals/Ions

Metals/Ions Comment Organism Structure
K+ required for activity and stability Halomonas elongata

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
44000
-
gel filtration Halomonas elongata

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
L-2-amino-4-oxobutanoate + L-glutamate Halomonas elongata
-
L-2,4-diaminobutanoate + 2-oxoglutarate
-
r
L-2-amino-4-oxobutanoate + L-glutamate Halomonas elongata OUT300318
-
L-2,4-diaminobutanoate + 2-oxoglutarate
-
r
L-2-amino-4-oxobutanoate + L-glutamate Halomonas elongata OUT30018
-
L-2,4-diaminobutanoate + 2-oxoglutarate
-
r

Organism

Organism UniProt Comment Textmining
Halomonas elongata
-
-
-
Halomonas elongata OUT300318
-
-
-

Purification (Commentary)

Purification (Comment) Organism
ammonium sulfate precipitation, Sepharose CL-6B Halomonas elongata

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Halomonas elongata

Storage Stability

Storage Stability Organism
0ºC, 100 mM 2,4-diaminobutyric acid Halomonas elongata

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
L-2-amino-4-oxobutanoate + L-glutamate
-
Halomonas elongata L-2,4-diaminobutanoate + 2-oxoglutarate
-
r
L-2-amino-4-oxobutanoate + L-glutamate
-
Halomonas elongata OUT300318 L-2,4-diaminobutanoate + 2-oxoglutarate
-
r
L-2-amino-4-oxobutanoate + L-glutamate
-
Halomonas elongata OUT30018 L-2,4-diaminobutanoate + 2-oxoglutarate
-
r

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
25
-
in presence of 0.4 M NaCl Halomonas elongata

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8.6 8.7
-
Halomonas elongata