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Table 2 Statistics on the complexity of pseudoknots in RNA STRAND v2.0.

From: RNA STRAND: The RNA Secondary Structure and Statistical Analysis Database

RNA type # Stem length # PKBP
  entries median mean std median mean std
16S ribosomal RNA 644 4.00 4.30 2.50 3.00 2.50 0.68
23S ribosomal RNA 93 4.00 4.14 2.39 2.00 3.75 3.12
Transfer messenger RNA 657 4.00 4.11 2.24 5.00 5.51 1.00
Ribonuclease P RNA 433 4.00 4.45 2.51 4.00 5.18 1.36
All, non-redundant 4104 4.00 4.35 2.44 4.00 4.14 1.86
All, non-redundant & normalised 4104 4.96 5.05 0.58 4.65 4.95 1.78
  1. The columns represent the RNA type, the number of entries for each type, the median, mean and standard deviation of the stem length (i.e., number of adjacent base pairs) and the minimum number of base pairs to break in order to open pseudoknots (# PKBP). For each row, a non-redundant set was selected, and outliers were removed.