Protein
Exopolyphosphatase 2
Organism
Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Function
Degradation of inorganic polyphosphates (polyP). Releases orthophosphate processively from the ends of the polyP chain. Prefers long-chain length polyphosphates as substrates (By similarity). Can also hydrolyze ATP and ADP substrates, but lacks GTPase activity. Cannot hydrolyze pppGpp to ppGpp (PubMed:22880033).
Similarity
Belongs to the GppA/Ppx family.
Sequence
MALTRVAAIDCGTNSIRLLIADVGAGLARGELHDVHRETRIVRLGQGVDATGRFAPEAIARTRTALTDYAELLTFHHAERVRMVATSAARDVVNRDVFFAMTADVLGAALPGSAAEVITGAEEAELSFRGAVGELGSAGAPFVVVDLGGGSTEIVLGEHEVVASYSADIGCVRLTERCLHSDPPTLQEVSTARRLVRERLEPALRTVPLELARTWVGLAGTMTTLSALAQSMTAYDAAAIHLSRVPGADLLEVCQRLIGMTRKQRAALAPMHPGRADVIGGGAIVVEELARELRERAGIDQLTVSEHDILDGIALSLAG