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Table 1 The main RNA types included in RNA STRAND v2.0.

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

RNA type Main source(s) # Length % PKBP
   entries mean std mean std
Transfer messenger RNA tmRDB [4] 726 368 86 21.0 6.1
16S ribosomal RNA CRW [1], PDB [10] 723 1529 286 1.8 0.5
Transfer RNA Sprinzl DB [2], PDB [10] 707 76 21 0.1 2.3
Ribonuclease P RNA RNase P DB [3] 470 323 71 5.7 3.2
Signal rec. particle RNA SRPDB [4], PDB [10] 394 220 111 0.0 0.0
23S ribosomal RNA CRW [1], PDB [10] 205 2699 716 2.4 1.1
5S ribosomal RNA CRW [1], PDB [10] 161 115 21 0.0 0.0
Group I intron CRW [1], PDB [10] 152 563 412 5.8 2.2
Hammerhead ribozyme Rfam [5], PDB [10] 146 61 24 0.0 0.0
Group II intron CRW [1], PDB [10] 42 1298 829 1.4 3.5
All molecules All of the above 4666 527 722 5.3 9.1
  1. Overview of the main RNA types in version 2.0 of the RNA STRAND database, their provenance, the number of RNAs, the mean length and standard deviation for each type. % PKBP denotes the percentage of the base pairs that need to be removed in order to render the structure pseudoknot-free. Most of the major RNA types are represented by a large number of molecules.