Last modified on 30 January 2007.

About This Section:

The introns that occur in 16S and 23S rRNAs are organized into four preconfigured tables that disseminate the intron information and emphasize the major dimensions inherent in this data:

  1. intron position in the rRNA,
  2. intron type,
  3. number of introns per exon gene, and
  4. phylogenetic distribution.

The information collected on this rRNA Introns page is the basis for two detailed analyses that have been published elsewhere:

  1. the spatial distribution of introns on the three-dimensional structure of the 16S and 23S rRNA (Jackson et al., 2002); and
  2. the statistical analysis of the distribution of spliceosomal introns on the rRNA (Bhattacharya et al., 2003).

rRNA Introns Data:

Table Description
1: Primarily Sorted by Intron Position  
A: Mean Frequency of Introns in rRNA Positions 16S/23S
B: Number of Intron Types per Intron Position
C: Number of Introns Identified for each Intron Position
D: Number of Introns for each Intron Position 16S
E: Secondary Structure Diagrams Showing Intron Positions for Escherichia coli (June 2002) 16S: PS | PDF
23S 5': PS | PDF
23S 3': PS | PDF
2: Primarily Sorted by Intron Type for each rRNA Gene 16S
3: Primarily Sorted by Number of Introns Per rRNA Gene 16S/23S
4: Primarily Sorted by Phylogenetic Distribution of rRNA Introns Archaea, Bacteria, Eukaryota