PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8386628-2 1993 In one series of mutants, the dipeptide Ser262 Thr263 between kringle 2 and the protease domain of tPA was (a) replaced by an Ala residue, (b) lengthened by additional Ser and Ala residues, (c) exchanged for the 16-amino-acid link between kringle and protease domains of uPA and an additional Ala residue. Dipeptides 30-39 urokinase-type plasminogen activator Cricetulus griseus 271-274