PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16372821-15 2005 The biguanide metformin is not significantly metabolised but polymorphisms in the organic cation transporter (OCT) 1 and OCT2 may determine its pharmacokinetic variability. Biguanides 4-13 POU class 2 homeobox 2 Homo sapiens 121-125 12240953-0 2002 Interactions of n-tetraalkylammonium compounds and biguanides with a human renal organic cation transporter (hOCT2). Biguanides 51-61 POU class 2 homeobox 2 Homo sapiens 109-114