Regulation of dinucleoside polyphosphate pools by the YgdP and ApaH hydrolases is essential for the ability of Salmonella enterica serovar typhimurium to invade cultured mammalian cells.

Abstract excerpt

The ygdP and apaH genes of Salmonella enterica serovar Typhimurium (S. Typhimurium) encode two unrelated dinucleoside polyphosphate (NpnN) hydrolases. For example, YgdP cleaves diadenosine tetraphosphate (Ap4A) producing AMP and ATP, while ApaH cleaves Ap4A producing 2ADP. Disruption of ygdP, apaH individually, and disruption of both genes together reduced intracellular invasion of human HEp-2 epithelial cells by...

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