title: Still a puzzle: why is haem covalently attached in c-type cytochromes?
abstract: 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.
authors.affiliation: University Chemical Laboratory, University of Cambridge, UK.
authors.forename: P D
authors.initials: PD
authors.lastname: Barker
authors.forename: S J
authors.initials: SJ
authors.lastname: Ferguson
mesh_terms: 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
chemical_list: D003574:Cytochrome c Group; D006418:Heme