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Literature summary for 2.6.1.1 extracted from

  • Numazawa, T.; Yamada, S.; Hase, T.; Sugiyama, T.
    Aspartate aminotransferase from Panicum maximum Jacq. var. trichoglume Eyles, a C4 plant: purification, molecular properties, and preparation of antibody (1989), Arch. Biochem. Biophys., 270, 313-319.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.049
-
oxaloacetate pH 8.0, 25°C Megathyrsus maximus
0.11
-
2-oxoglutarate pH 8.3, 25°C Megathyrsus maximus
2.3
-
L-aspartate pH 8.3, 25°C Megathyrsus maximus
13
-
L-glutamate pH 8.0, 25°C Megathyrsus maximus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
42000
-
2 * 42000, SDS-PAGE Megathyrsus maximus
100000
-
gel filtration Megathyrsus maximus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
L-aspartate + 2-oxoglutarate Megathyrsus maximus
-
oxaloacetate + L-glutamate
-
?

Organism

Organism UniProt Comment Textmining
Megathyrsus maximus
-
2 isozymes
-
Megathyrsus maximus
-
Jacq. var. trichoglume Eyles
-

Purification (Commentary)

Purification (Comment) Organism
2 isozymes Megathyrsus maximus

Source Tissue

Source Tissue Comment Organism Textmining
leaf mesophyll Megathyrsus maximus
-
mesophyll
-
Megathyrsus maximus
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
165
-
synthesis of aspartate Megathyrsus maximus
182
-
forward reaction Megathyrsus maximus

Storage Stability

Storage Stability Organism
-80°C, stable for at least 1 year Megathyrsus maximus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
L-aspartate + 2-oxoglutarate
-
Megathyrsus maximus oxaloacetate + L-glutamate
-
?
L-aspartate + 2-oxoglutarate
-
Megathyrsus maximus oxaloacetate + L-glutamate
-
r

Subunits

Subunits Comment Organism
dimer 2 * 42000, SDS-PAGE Megathyrsus maximus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8
-
reverse reaction Megathyrsus maximus
8.3
-
forward reaction Megathyrsus maximus

pH Range

pH Minimum pH Maximum Comment Organism
6.5 8 pH 6.5: 63% of activity maximum of oxaloacetate formation, 50% of activity maximum of aspartate formation, pH 8.0: activity maximum Megathyrsus maximus