comparison of the nh2-terminal sequence of c4a with the sequences of complement activation fragments c3a ( hugli , t.e . ( 1975 ) j. biol . chem . 250 , 8293-8301 ) and c5a ( fernandez , h.n. , and hugli , t.e . ( 1978 ) j. biol . chem , 253-6955-6962 ) showed that of the first 24 nh2-terminal residues of c4a , 6 were identical with those of c3a ( 25 % homology ) and 8 were identical with those of c5a ( 33 % homology ) .
C0009528
complement activation
C1367710
c5a