the previous studies have shown that ( a ) noncovalent interactions of the ferro-heme fragment of residues 1-38 and apoprotein ( 1-104 ) of horse cytochrome c simultaneously and specifically form two isomeric complexes , types i and ii resembling the native protein ( the redundant residues flexibly protruding from the ordered structure ) ;
C0003601
apoprotein
C0033684
protein