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4.3.1.1: aspartate ammonia-lyase

This is an abbreviated version!
For detailed information about aspartate ammonia-lyase, go to the full flat file.

Reaction

L-aspartate
=
fumarate
+
NH3

Synonyms

ammonia-lyase, aspartate, ASPA, aspartase, aspartate ammonia lyase, aspartate ammonia-lyase, aspartate:ammonia lyase, aspB, Cj0087, fumaric aminase, L-aspartase, L-aspartate ammonia lyase, L-aspartate ammonia-lyase, maspase 1, maspase 2, maspase 3

ECTree

     4 Lyases
         4.3 Carbon-nitrogen lyases
             4.3.1 Ammonia-lyases
                4.3.1.1 aspartate ammonia-lyase

Purification

Purification on EC 4.3.1.1 - aspartate ammonia-lyase

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PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
After overexpression of the aspA gene in Escherichia coli BL21, the gene product is purified to homogeneity by ion-exchange and hydrophobic interaction chromatography
by using a combination of diethylaminoethyl cellulose, Red A-agarose,and Sepharose 6B chromatography
-
immobilized metal ion affinity chromatography (Ni2+)
-
partially purified by heat precipitation and saturation with ammonium sulfate
recombinant enzyme containing a C-terminal His6 tag is purified by one-step affinity purification
-
recombinant enzyme expressed in Escherichia coli
transformed cells of Escherichia coli JRG1476 are used to prepare the aspA products: proteins are fractionated in buffer with a NaCl gradient on successive anion-exchange Sepharose XL high-capacity and Source 30Q high-resolution chromatography columns
-
transformed cells of Escherichia coli JRG1476 are used to prepare the aspA products: proteins are fractionated in purification buffer with a NaCl gradient on successive anion-exchange Sepharose XL high-capacity and Source 30Q high-resolution chromatography columns
-