16S ribosomal RNA

For the mitochondrially encoded 16S LSU RNA, see MT-RNR2.
Bacterial small subunit ribosomal RNA
SSU Ribosomal RNA, bacteria and archaea. From Woese 1987.
Identifiers
SymbolSSU_rRNA_bacteria
RfamRF00177
Other data
RNA typeGene; rRNA
DomainBacteria
PDB structuresPDBe
Archaeal small subunit ribosomal RNA
Identifiers
SymbolSSU_rRNA_archaea
RfamRF01959
Other data
RNA typeGene; rRNA
DomainBacteria
PDB structuresPDBe

16S ribosomal RNA (or 16S rRNA) is the RNA component of the 30S subunit of a prokaryotic ribosome (SSU rRNA). It binds to the Shine-Dalgarno sequence and provides most of the SSU structure.

The genes coding for it are referred to as 16S rRNA genes and are used in reconstructing phylogenies, due to the slow rates of evolution of this region of the gene. Carl Woese and George E. Fox were two of the people who pioneered the use of 16S rRNA in phylogenetics in 1977. Multiple sequences of the 16S rRNA gene can exist within a single bacterium.

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