Energetic Selection of Topology in Ferredoxins
Figure 8
Topology angles of entactic structural states.
Cys-Gly-Gly-Clu-Gly-Gly-Cys hepeptide model has 232 structural entactic states, either right-handed (blue, 75 out of 232) or left-handed (red, 157 out of 232). Despite the inexistence of left-handed topological state in nature, model peptide suggests that left-handed structure can also properly interact with an iron-sulfur cluster.