PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17014440-7 2006 Substrate specificity of equine tryptase was investigated using arginine and lysine containing substrates. Arginine 64-72 proto-oncogene tyrosine-protein kinase receptor Ret Equus caballus 32-40 17014440-9 2006 Unusually for a trypsin-like proteinase however, equine tryptase has alanine at residue 216, rather than glycine, which confers increased arginine substrate specificity in vitro and may restrict fibrinogenolysis in vivo. Arginine 138-146 proto-oncogene tyrosine-protein kinase receptor Ret Equus caballus 56-64