The VirPphA/AvrPtoB family of type III effectors in Pseudomonas syringae

The VirPphA/AvrPtoB family of type III effector proteins from the phytopathogenic bacterium Pseudomonas syringae is one of the models providing insights into the molecular mechanisms conferring plant disease resistance and pathogenesis. In this review we summarize recent advances concerning the VirPphA/AvrPtoB family of effectors involved in the elicitation and suppression of plant defense responses.