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Table 1 Reference sequence and nucleotide frequency data available at the CRW Site. Nucleotide frequency data available in tabular form is indicated with "Y." Entries marked with "*" are also available mapped on the phylogenetic tree. L, Lousy; M, Model; T, Tentative.

From: The Comparative RNA Web (CRW) Site: an online database of comparative sequence and structure information for ribosomal, intron, and other RNAs

  Reference Sequence Single Nucleotide Base Pair Base Triple
    M T L M T
rRNA        
5S Escherichia coli [V00336] Y Y Y    
16S Escherichia coli [J01695] Y* Y* Y Y Y* Y
23S Escherichia coli [J01695] V* Y* Y Y Y* Y
tRNA Saccharomyces cerevisiae (Phe) [K01553] Y Y    Y  
Intron RNA        
Group I Tetrahymena thermophila (LSU) [V01416, J01235] Y Y     
Group IIA Saccharomyces cerevisiae cytochrome oxidase (mitochondrial) intron #1 [AJ011856] Y Y     
Group IIB Saccharomyces cerevisiae cytochrome oxidase (mitochondrial) intron #5 [V00694] Y Y     
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