PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1698787-6 1990 In contrast to PAI-1, ECM-associated VN was resistant toward glycine (pH 2.3), guanidine or urokinase treatment, suggesting that VN was tightly associated with the ECM network. Glycine 61-68 vitronectin Homo sapiens 37-39