Positions on the structure ⓘ
The positions in the 5S, 16S and 23S boxes, lit up on the E. coli ribosome as you type. Positions typed in another numbering are first translated to E. coli through the same tables Generate uses; any with no E. coli counterpart are named below rather than dropped.
2D — R2DT secondary-structure diagrams (Sweeney et al. 2021, via RNAcentral) of the E. coli reference sequences: RiboVision templates for 16S and 23S, CRW for 5S.
3D — PDB 7K00, E. coli 70S with mRNA and A- and P-site tRNAs (Watson et al. 2020). Gray: rRNA; tan: mRNA and tRNAs; faint: ribosomal proteins.
2D — R2DT secondary-structure diagrams (Sweeney et al. 2021, via RNAcentral) of the E. coli reference sequences: RiboVision templates for 16S and 23S, CRW for 5S.
3D — PDB 7K00, E. coli 70S with mRNA and A- and P-site tRNAs (Watson et al. 2020). Gray: rRNA; tan: mRNA and tRNAs; faint: ribosomal proteins.
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Ribosome Atlas is an interactive resource for exploring ribosomal RNA diversity across microbial life. The site integrates large-scale phylogenies, multiple sequence alignments, and structural visualizations to enable comparative analysis of ribosomal variation across taxonomic levels. By linking evolutionary context with alignment and structure-derived features, Ribosome Atlas aims to support research in RNA evolution, function, and data-driven structure modeling. Data is based on GTDB release r232 (2026).
A
U
G
C
Ambig
Poor
5S rRNA
A
U
G
C
Ambig
Poor
16S rRNA
A
U
G
C
Ambig
Poor
23S rRNA
Base Composition (excludes gaps):
Shannon Entropy:
* = entropy below 0.001 bits (too small to show on the log scale)