a monoclonal antibody , 10-f-1 , previously shown [ v. a. ploplis , h. s. cummings , and f. j. castellino ( 1982 ) biochemistry 21 , 5891-5897 ] to interact with a particular epsilon-aminocaproic acid ( eaca ) 3 binding site on the kringle 4 ( k4 ) region of human glu1-plasminogen ( glu1-pg ) , has been employed to assess the contribution of this particular eaca site toward the enhancement , by eaca and its analogs , of the urokinase ( uk ) -catalyzed activation of glu1-pg .
C0064417
kringle
C0042071
urokinase