Polyphosphate Deficiency in Mycobacterium tuberculosis Is Associated with Enhanced Drug Susceptibility and Impaired Growth in Guinea Pigs

Abstract excerpt

Inorganic polyphosphate (polyP), a linear polymer of hundreds of phosphate residues linked by ATP-like phosphoanhydride bonds, is found in all organisms and performs a wide variety of functions. This study shows that polyP accumulation occurs in Mycobacterium tuberculosis upon exposure to various stress conditions. M. tuberculosis possesses a single homolog of ppk-1, and we have disrupted ppk-1 in the M....

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