These types and associated references are SH2-Yph [105] (PDB: 1SPS), SIM-SUMO [83] (PDB: 2ASQ), bromodomain-acetyl-lysine [16] (PDB: 3JVK), chromodomain-methyllysine [15,88] (PDB: 3FDT), SH3-PRM [83,106] (PDB: 5QU2), PTB1-RNA [83,106] (PDB: 2AD9), pi-pi interactions [78,81,82,107], pi-cation interactions [78,108], electrostatic nteractions [79,80,109,110], and labile structures [111–113] (PDB: 5W3N and 6BZM). Abbreviations: