when electron transfer from the b-type cytochromes to cytochrome c1 , ubiquinone and duroquinone is inhibited by antimycin , the hemes of cytochrome b-566 and cytochrome b-562 ( or cytochrome b-563 and cytochrome b-557 ) are in the reduced state .
C1256751
b-type cytochromes
C0010744
cytochrome b