title: The purification of 5-enolpyruvylshikimate 3-phosphate synthase from an overproducing strain of Escherichia coli.
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.
mesh_terms: D051229:3-Phosphoshikimate 1-Carboxyvinyltransferase; D019883:Alkyl and Aryl Transferases; D010582:Bacteriophage lambda / Q000235:genetics; D002850:Chromatography, Gel; D004274:DNA, Recombinant / Q000378:metabolism; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli / Q000201:enzymology* / Q000235:genetics; D007700:Kinetics; D008970:Molecular Weight; D010446:Peptide Fragments; D014166:Transferases / Q000302:isolation & purification*
chemical_list: D004274:DNA, Recombinant; D010446:Peptide Fragments; D014166:Transferases; D019883:Alkyl and Aryl Transferases; D051229:3-Phosphoshikimate 1-Carboxyvinyltransferase