elastase-derived plasminogen fragments corresponding to kringle 1+2+3 and kringle 4 ( both of which contained the lysine-binding sites ) possessed neutrophil adherence-promoting activities similar to plasmin , whereas miniplasminogen ( which contains the catalytic site but no lysine-binding sites ) had minimal effect , indicating the involvement of lysine-binding sites in the response .
C0032140
plasminogen
C0064417
kringle