since side-chain groups of residues other than histidine and methionine do not appear to be involved in the central complexes of other mammalian-type cytochromes c ( hettinger & harbury , 1964 , 1965 ; myer & harbury , 1965 ) it is likely that in ustilago ferricytochrome c in solution at neutral ph , the side-chain groups of histidine-18 and methionine-80 are involved in the central co-ordination complex .
C1256752
type cytochromes c
C0010749
ferricytochrome