Article
On the evolution of an oligocephalic enzyme. glutamine-chorismate-amidotransferase-free anthranilate phosphoribosyltransferases from mutant strains of Salmonella typhimurium.
Zeitschrift fur Naturforschung. Section C, Biosciences - 1 Jan 2000
Grieshaber M
Abstract excerpt
(1) A procedure has been described for the purification of two glutamine-chorismate-amidotransferase-free anthranilate phosphoribosyltransferases from mutant strains TAX6trpR782 and trpAB1653trpR782 of Salmonella typhimurium. (2) The native enzymes tend to aggregate forming polymers of molecular weights 333,000 in the case of TAXtrpR782 and 220,000 and larger than 1X10(6) in the case of trpAB1653trpR782. In the...
Topics
- Anthranilate Phosphoribosyltransferase
- Anthranilate Synthase
- Hydrogen-Ion Concentration
- Multienzyme Complexes
- Mutation
- Pentosyltransferases
- Salmonella typhimurium