Still a puzzle: why is haem covalently attached in c-type cytochromes?
c-Type cytochromes are a group of proteins with diverse structures and functions. Their common feature is covalent attachment of haem to one or more CXXCH motifs. There does not seem to be a single advantageous reason for this covalent attachment.
Barker
P D
PD
University Chemical Laboratory, University of Cambridge, UK.
Ferguson
S J
SJ
D000595:Amino Acid Sequence; D000818:Animals; D001665:Binding Sites; D003574:Cytochrome c Group / Q000737:chemistry*; D006418:Heme / Q000737:chemistry*; D008958:Models, Molecular; D011487:Protein Conformation; D017433:Protein Structure, Secondary
D003574:Cytochrome c Group; D006418:Heme