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Literature summary for 2.6.1.1 extracted from

  • Hatch, M.D.
    Separation and properties of leaf aspartate aminotransferase and alanine aminotransferase isoenzymes operative in the C4 pathway of photosynthesis (1973), Arch. Biochem. Biophys., 156, 207-214.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Hadacidin i.e. N-formylhydroxyaminoacetic acid Atriplex spongiosa
malate oxoglutarate production, oxaloacetate production Atriplex spongiosa

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.045
-
oxaloacetate isozyme Asp-DEAE-2, pH 8.0 Atriplex spongiosa
0.08
-
2-oxoglutarate isozyme Asp-DEAE-1, pH 8.0 Atriplex spongiosa
0.1
-
oxaloacetate isozyme Asp-DEAE-1, pH 8.0 Atriplex spongiosa
0.12
-
2-oxoglutarate isozyme Asp-DEAE-2, pH 8.0 Atriplex spongiosa
0.5
-
L-aspartate isozyme Asp-DEAE-2, pH 8.0 Atriplex spongiosa
0.75
-
L-glutamate isozyme Asp-DEAE-2, pH 8.0 Atriplex spongiosa
0.85
-
L-aspartate isozyme Asp-DEAE-1, pH 8.0 Atriplex spongiosa
1.6
-
L-glutamate isozyme Asp-DEAE-1, pH 8.0 Atriplex spongiosa

Natural Substrates/ Products (Substrates)

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

Organism

Organism UniProt Comment Textmining
Atriplex spongiosa
-
2 major isozymes: Asp-DEAE-1 and Asp-DEAE-2
-

Purification (Commentary)

Purification (Comment) Organism
isoenzymes: Asp-DEAE-1 and Asp-DEAE-2 Atriplex spongiosa

Source Tissue

Source Tissue Comment Organism Textmining
bundle sheath isozyme Asp-DEAE-2 Atriplex spongiosa
-
leaf
-
Atriplex spongiosa
-
mesophyll isozyme Asp-DEAE-1 Atriplex spongiosa
-

Storage Stability

Storage Stability Organism
0°C, stable for at least several h in solution Atriplex spongiosa

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
L-aspartate + 2-oxoglutarate
-
Atriplex spongiosa oxaloacetate + L-glutamate
-
?
L-aspartate + 2-oxoglutarate isozyme Asp-DEAE-1 performs preferably the reverse reaction, isozyme the forward reaction Atriplex spongiosa oxaloacetate + L-glutamate
-
r

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.8 8.3 formation of oxaloacetate, isoenzyme Asp-DEAE-1 Atriplex spongiosa
8
-
oxaloacetate formation, isoenzyme Asp-DEAE-2 Atriplex spongiosa