Diversifying selection drives the evolution of the type III secretion system pilus of Pseudomonas syringae.

@article{Guttman2006DiversifyingSD,
  title={Diversifying selection drives the evolution of the type III secretion system pilus of Pseudomonas syringae.},
  author={David S. Guttman and Susan J Gropp and Robyn L. Morgan and Pauline W. Wang},
  journal={Molecular biology and evolution},
  year={2006},
  volume={23 12},
  pages={2342-54}
}
The plant pathogenic bacterium Pseudomonas syringae uses a type III secretion system to inject virulence proteins directly into the cytoplasm of its hosts. The P. syringae type III secretion apparatus is encoded, in part, by the HrpZ operon, which carries the hrpA gene encoding the pilin subunit of the pilus, various components of the structural apparatus, and the HrpZ harpin protein that is believed to produce pores in the host cell membrane. The pilus of the type III system comes into direct… CONTINUE READING

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