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Literature summary for 2.6.1.1 extracted from

  • Martins, M.L.; Mourato, M.P.; de Varennes e Mendonca, A.P.
    Characterization of aspartate aminotransferase isoenzymes from leaves of Lupinus albus L. cv Estoril (2002), J. Biochem. Mol. Biol., 35, 220-227.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
L-glutamate isozyme AAT1 and AAT2, product inhibition Lupinus albus
oxaloacetate isozyme AAT1 and AAT2, product inhibition Lupinus albus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information
-
Lupinus albus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
52200
-
2 * 52200, isozyme AAT1, SDS-PAGE Lupinus albus
54800
-
2 * 54800, isozyme AAT2, SDS-PAGE Lupinus albus
88000
-
isozyme AAT1, gel filtration Lupinus albus
92000
-
isozyme AAT2, gel filtration Lupinus albus
112000
-
isozyme AAT1, native PAGE Lupinus albus
136000
-
isozyme AAT2, native PAGE Lupinus albus

Natural Substrates/ Products (Substrates)

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

Organism

Organism UniProt Comment Textmining
Lupinus albus
-
cv. Estoril
-
Lupinus albus
-
2 isozymes: AAT1 and AAT2
-

Purification (Commentary)

Purification (Comment) Organism
isozymes AAT1 and AAT2 Lupinus albus

Source Tissue

Source Tissue Comment Organism Textmining
leaf isozymes AAT1 and AAT2 Lupinus albus
-

Substrates and Products (Substrate)

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

Subunits

Subunits Comment Organism
dimer 2 * 54800, isozyme AAT2, SDS-PAGE Lupinus albus
dimer 2 * 52200, isozyme AAT1, SDS-PAGE Lupinus albus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
65
-
-
Lupinus albus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
50
-
isozyme AAT1 t1/2: 3.6 min, isozyme AAT2 t1/2: 41.2 min Lupinus albus
65
-
inactivation, isozymes AAT 1 and 2 Lupinus albus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5 8.5 isozyme AAT1 Lupinus albus
8.5 9.5 isozyme AAT2 Lupinus albus

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
0.005
-
oxaloacetate isozyme AAT1, competitive versus 2-oxoglutarate Lupinus albus
0.024
-
oxaloacetate isozyme AAT2, noncompetitive versus L-aspartate Lupinus albus
0.026
-
oxaloacetate isozyme AAT2, competitive versus 2-oxoglutarate Lupinus albus
0.03
-
oxaloacetate isozyme AAT1, noncompetitive versus L-aspartate Lupinus albus
10.5
-
L-glutamate isozyme AAT1, competitive versus L-aspartate Lupinus albus
11.1
-
L-glutamate isozyme AAT1, noncompetitive versus 2-oxoglutarate Lupinus albus
16
-
L-glutamate isozyme AAT2, noncompetitive versus 2-oxoglutarate Lupinus albus
30
-
L-glutamate isozyme AAT2, competitive versus L-aspartate Lupinus albus

pI Value

Organism Comment pI Value Maximum pI Value
Lupinus albus isozyme AAT1
-
5.54
Lupinus albus isozyme AAT2
-
5.79