PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10930462-2 2000 Both gene products phosphorylate PtdIns at the D-4 position of the inositol ring to generate PtdIns(4)P, which plays an essential role in yeast viability because deletion of either STT4 or PIK1 is lethal. Inositol 67-75 1-phosphatidylinositol 4-kinase STT4 Saccharomyces cerevisiae S288C 181-185