Type VI secretion exported toxin that pyrophosphorylates adenosine nucleotides to produce (p)ppApp. Thereby, depletes cellular ADP and ATP to dysregulate central metabolism in competitor cells. AMP + ATP = adenosine 3'-diphosphate,5'-phosphate + AMP + H(+) ADP + ATP = adenosine 3'-diphosphate,5'-diphosphate + AMP 2 ATP = adenosine 3'-diphosphate,5'-triphosphate + AMP Deletion mutant in PA14 strain displays an approximately 40-fold decrease in competitive index against PAO1 strain.