kringle 1 ( tyr 79/leu 80-his 167 and tyr 79/leu 80-tyr 173 ) , a chymotryptic fragment of human plasminogen that has high affinity for fibrin and omega-aminocarboxylic acids , has been subjected to modification with 1,2-cyclohexanedione to identify arginine residues essential for ligand binding .
C0064417
kringle
C0032140
plasminogen