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Literature summary for 1.4.1.4 extracted from

  • Leicht, W.; Werber, M.M.; Eisenberg, H.
    Purification and characterization of glutamate dehydrogenase from Halobacterium of the Dead Sea (1978), Biochemistry, 17, 4004-4010.
    View publication on PubMed

General Stability

General Stability Organism
in absence of salt it is irreversibly inactivated, optimal NaCl concentration is 1.1 M Halobacterium sp.

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.024
-
NADPH reductive amination Halobacterium sp.
0.061
-
NADP+ oxidative deamination Halobacterium sp.
3
-
2-oxoglutarate reductive amination at 25°C Halobacterium sp.
14.2
-
L-glutamate oxidative deamination Halobacterium sp.
16.6
-
NH4+ reductive amination Halobacterium sp.

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
53500
-
alpha4, 4 * 53500, SDS-PAGE Halobacterium sp.
212000
-
sedimentation equilibrium and sedimentation velocity and diffusion coefficient Halobacterium sp.

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
L-glutamate + NADP+ + H2O Halobacterium sp.
-
2-oxoglutarate + NADPH + NH3
-
r

Organism

Organism UniProt Comment Textmining
Halobacterium sp.
-
-
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2-oxoglutarate + NH4+ + NADPH
-
Halobacterium sp. L-glutamate + NADP+
-
?
L-glutamate + NADP+ + H2O
-
Halobacterium sp. 2-oxoglutarate + NADPH + NH3
-
r

Subunits

Subunits Comment Organism
homotetramer alpha4, 4 * 53500, SDS-PAGE Halobacterium sp.

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
65
-
at 4.3 M NaCl stable for several h Halobacterium sp.

Cofactor

Cofactor Comment Organism Structure
NADP+
-
Halobacterium sp.
NADPH
-
Halobacterium sp.