The purification of 5-enolpyruvylshikimate 3-phosphate synthase from an overproducing strain of Escherichia coli.
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Duncan K, Lewendon A, Coggins JR
The purification of 5-enolpyruvylshikimate 3-phosphate synthase from an overproducing strain of Escherichia coli.
FEBS Lett. 1984 Jan 2;165(1):121-7.
- PubMed ID
- 6229418 [ View in PubMed]
- Abstract
The Escherichia coli aroA gene which codes for the enzyme 5-enolpyruvylshikimate 3-phosphate synthase (EPSP synthase) has been cloned from the lambda-transducing bacteriophage lambda pserC. The gene has been located on a 4.7 kilobase pair PstI DNA fragment which has been inserted into the multiple copy plasmid pAT153. E. coli cells transformed with this recombinant plasmid overproduce EPSP synthase 100-fold. A simple method for the purification of homogeneous enzyme in milligram quantities has been devised. The resulting enzyme is indistinguishable from enzyme isolated from untransformed E. coli.