Secondary structures of LSU (23S, left) and SSU (16S, right) rRNAs from E. coli.  In the LSU rRNA, nucleotides that are close to the site of peptidyl transfer are dark blue. Nucleotides that are remote from the PTC are red. In the SSU rRNA, nucleotides that are close to the decoding site are dark blue. Nucleotides that are remote from the decoding site are red.
1 Secondary structures of LSU (23S, left) and SSU (16S, right) rRNAs from E. coli. In the LSU rRNA, nucleotides that are close to the site of peptidyl transfer are dark blue. Nucleotides that are remote from the PTC are red. In the SSU rRNA, nucleotides that are close to the decoding site are dark blue. Nucleotides that are remote from the decoding site are red.
Three dimensional structure of the intact ribosome of E. coli.  In the LSU (top), nucleotides that are close to the site of peptidyl transfer (PTC) are dark blue. Nucleotides that are remote from the PTC are red. In the SSU (bottom), nucleotides that are close to the decoding site are dark blue. Nucleotides that are remote from the decoding site are red. Proteins are translucent and are gray.
2 Three dimensional structure of the intact ribosome of E. coli. In the LSU (top), nucleotides that are close to the site of peptidyl transfer (PTC) are dark blue. Nucleotides that are remote from the PTC are red. In the SSU (bottom), nucleotides that are close to the decoding site are dark blue. Nucleotides that are remote from the decoding site are red. Proteins are translucent and are gray.
Secondary structures of LSU (left) and SSU (right) rRNAs from three species.  rRNA is colored by domain.
3 Secondary structures of LSU (left) and SSU (right) rRNAs from three species. rRNA is colored by domain.
LSU rRNA secondary structures. A) E. coli, B) S. cerevisiae, and C) H. sapiens..  The color indicates the proximity in three dimensions to the site of peptidyl transfer. Blue is close to the site of peptidyl transfer and red is remote. Nucleotides that were not experimentally resolved in three dimensions are gray on the secondary structures.
4 LSU rRNA secondary structures. A) E. coli, B) S. cerevisiae, and C) H. sapiens.. The color indicates the proximity in three dimensions to the site of peptidyl transfer. Blue is close to the site of peptidyl transfer and red is remote. Nucleotides that were not experimentally resolved in three dimensions are gray on the secondary structures.
Phylogram indicating the sizes of LSU rRNAs and the sizes of genomes.  Circle radii are proportional to total length of LSU rRNAs. Circles are colored by C-value, which is genome size measured in picograms. Two species here have anomalously high C-values and are colored in black (P. aethiopicus: C-value 133 pg, and P. glauca: C-value 24 pg). The sizes of archaeal and bacterial LSU rRNAs are highly restrained, so they are represented by just one species each.
5 Phylogram indicating the sizes of LSU rRNAs and the sizes of genomes. Circle radii are proportional to total length of LSU rRNAs. Circles are colored by C-value, which is genome size measured in picograms. Two species here have anomalously high C-values and are colored in black (P. aethiopicus: C-value 133 pg, and P. glauca: C-value 24 pg). The sizes of archaeal and bacterial LSU rRNAs are highly restrained, so they are represented by just one species each.