Crystal structure of phenylalanine-regulated 3-deoxy-D-arabino-heptulosonate-7-phosphate synthase from Escherichia coli.Shumilin, I.A., Kretsinger, R.H., Bauerle, R.H.
(1999) Structure 7: 865-875
- PubMed: 10425687
- DOI: https://doi.org/10.1016/s0969-2126(99)80109-9
- Primary Citation of Related Structures:
- PubMed Abstract:
In microorganisms and plants the first step in the common pathway leading to the biosynthesis of aromatic compounds is the stereospecific condensation of phosphoenolpyruvate (PEP) and D-erythrose-4-phosphate (E4P) giving rise to 3-deoxy-D-arabino-heptulosonate-7-phosphate (DAHP). This reaction is catalyzed by DAHP synthase (DAHPS), a metal-activated enzyme, which in microorganisms is the target for negative-feedback regulation by pathway intermediates or by end products. In Escherichia coli there are three DAHPS isoforms, each specifically inhibited by one of the three aromatic amino acids.
Department of Biology, University of Virginia, Charlottesville 22903, USA.