PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16779667-10 2006 In the double mutant of PPX1 and PPN1, no exopolyphosphatase activity was detected in the cytosol, nuclei, and mitochondria and further elongation of polyphosphates was observed in all compartments. Polyphosphates 150-164 exopolyphosphatase Saccharomyces cerevisiae S288C 24-28