PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1991688-2 1991 Each of the three substances caused a decrease of intracellular pH (pHi) when the cell lines were exposed at low extracellular pH (pHe) in the range 6.0-6.5. Phenylalanine 131-134 glucose-6-phosphate isomerase Homo sapiens 68-71 1991688-4 1991 The fall in pHi increased with increasing dose of each agent and with decreasing pHe. Phenylalanine 81-84 glucose-6-phosphate isomerase Homo sapiens 12-15