Overproduction, Purification, and Characterization of Recombinant Aspartate Semialdehyde Dehydrogenase from Arabidopsis thaliana

In plant and microorganisms, aspartate semialdehyde dehydrogenase (ASDH) produces the branch point intermediate between the lysine and threonine/methionine pathways. In this study, we report the first cDNA cloning, purification, and characterization of a plant ASDH. The Arabidopsis thaliana ASDH is...

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Veröffentlicht in:Protein expression and purification 2002-02, Vol.24 (1), p.99-104
Hauptverfasser: Paris, Stephane, Wessel, Peter M., Dumas, Renaud
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creator Paris, Stephane
Wessel, Peter M.
Dumas, Renaud
description In plant and microorganisms, aspartate semialdehyde dehydrogenase (ASDH) produces the branch point intermediate between the lysine and threonine/methionine pathways. In this study, we report the first cDNA cloning, purification, and characterization of a plant ASDH. The Arabidopsis thaliana ASDH is an homodimeric enzyme composed of subunits of 36 kDa. The plant enzyme exhibited a specific activity of 26 μmol NADPH oxidized min−1 mg−1 of protein with a KM value for NADPH of 92 μM. ASDH showed cooperative behavior for aspartyl phosphate with a K0.5 value of 37 μM.
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subjects Amino Acid Sequence
Arabidopsis - enzymology
Arabidopsis - genetics
Arabidopsis thaliana
ASADH
ASDH
Aspartate-Semialdehyde Dehydrogenase - chemistry
Aspartate-Semialdehyde Dehydrogenase - genetics
Aspartate-Semialdehyde Dehydrogenase - isolation & purification
Cloning, Molecular
DNA, Complementary
Escherichia coli - genetics
Gene Expression
Kinetics
Molecular Sequence Data
Recombinant Proteins - chemistry
Recombinant Proteins - genetics
Recombinant Proteins - isolation & purification
Recombinant Proteins - metabolism
Sequence Analysis, Protein
Sequence Homology, Amino Acid
Solutions
title Overproduction, Purification, and Characterization of Recombinant Aspartate Semialdehyde Dehydrogenase from Arabidopsis thaliana
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