Figure 7
The library of topologies for tree graphs between 2 and 10 vertices, with the second smallest Laplacian eigenvalue (λ 2 ) listed. RNA families with sequences belonging to select topologies are listed below their corresponding tree graph. Existing topologies, RNA-like, and non-RNA-like topologies based on the 2010 clustering are represented by red, blue or black (dashed) colors, respectively. For tree graphs with 2-6 vertices, the complete library is shown (all topologies are currently existing in nature). For tree graphs with 7-10 vertices, the partial library of topologies (existing, RNA-like, and non-RNA-like) is shown. See the RAG website for the complete library of topologies with 7-10 vertices.