Figure 4
From: Shape based indexing for faster search of RNA family databases
Distribution of shrep energies, normalized to sequence length for three selected Rfam families. The MFE structure for all sequences from the three chosen families is the single hairpin shape. While their abstract shape is the same, they differ in folding energy. To eliminate the influence of sequence length on the folding energy, it is divided by sequence length. The x-axis represents this normalized energy value and the y-axis shows the amount of sequences that fold with this normalized energy value. Several distinct peaks can be seen, showing that the shrep energy does not only depend on sequence length. Therefore, it provides an additional attribute of a family that can be used in filtration.