Irp9, encoded by the high-pathogenicity island of Yersinia enterocolitica, is able to convert chorismate into salicylate, the precursor of the siderophore yersiniabactin.

@article{Pelludat2003Irp9EB,
  title={Irp9, encoded by the high-pathogenicity island of Yersinia enterocolitica, is able to convert chorismate into salicylate, the precursor of the siderophore yersiniabactin.},
  author={Cosima Pelludat and Daniela Brem and Juergen Heesemann},
  journal={Journal of bacteriology},
  year={2003},
  volume={185 18},
  pages={5648-53}
}
The Irp9 protein of Yersinia enterocolitica participates in the synthesis of salicylate, the precursor of the siderophore yersiniabactin. In Pseudomonas species, salicylate synthesis is mediated by two enzymes: isochorismate synthase and isochorismate pyruvate-lyase. Both enzymes are required for complementation of a Yersinia irp9 mutant. However, irp9 is not able to complement Escherichia coli entC for the production of enterobactin, which requires isochorismate as a precursor. These results… CONTINUE READING

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