PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
33952823-0	2021	Protonation State of a Histidine Residue in Human Oligopeptide Transporter 1 (hPEPT1) Regulates hPEPT1-Mediated Efflux Activity.	Histidine	23-32	solute carrier family 15 member 1	Homo sapiens	78-84	
33952823-0	2021	Protonation State of a Histidine Residue in Human Oligopeptide Transporter 1 (hPEPT1) Regulates hPEPT1-Mediated Efflux Activity.	Histidine	23-32	solute carrier family 15 member 1	Homo sapiens	96-102	
33952823-10	2021	These data indicate that the efflux process of hPEPT1 is also regulated in a pH-dependent manner by the protonation state of a histidine residue located at or near the substrate recognition site facing the extracellular space.	Histidine	127-136	solute carrier family 15 member 1	Homo sapiens	47-53