accordingly , the sequence of the a chain can be divided into three domains : 1 ) the growth factor domain with homologies to murine epidermal growth factor and a particular sequence of bovine clotting factor x , 2 ) the `` '' kringle '' '' domain with homologies to `` '' kringle '' '' structures , e.g . in plasminogen , and 3 ) the connecting peptide domain containing the a1 chain of low molecular mass urokinase .
C0064417
`` '' krin
C0032140
in plasmin