Catalytic inhibition of gamma-aminobutyric acid - alpha-ketoglutarate transaminase of bacterial origin by 4-aminohex-5-ynoic acid, a substrate analog. |
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Authors: | M J Jung B W Metcalf |
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Institution: | Centre de Recherche Merrell International 16, rue d''Ankara 67000 Strasbourg France |
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Abstract: | γ-Aminobutyric acid-α-ketoglutarate transaminase from is irreversibly inhibited by 4-aminohex-5-yhoic acid, a new structural analog of GABA. The fact that this inhibition requires the pyridoxal form of the holoenzyme, and the formation of a Michaelis complex is in support of a catalytic mechanism. The compound is also active and on the same enzyme from mammalian brain. |
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