analysis of the predicted structures of the regions containing the two his ( 113 and 387 ) and asp ( 136 and 410 ) residues in plasminogen kringles 1 and 4 , which have been found to be important in binding the ligand , epsilon-aminocaproic acid , shows that all are localized at the same positions on beta-turns .
C0032140
plasminogen
C0064417
kringles