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Small subunit ribosomal ribonucleic acid (SSU rRNA) is the smaller of the two major RNA components of the ribosome. Associated with a number of ribosomal proteins, the SSU rRNA forms the small subunit of the ribosome. It is encoded by SSU-rDNA.
SSU rRNA | |
---|---|
Identifiers | |
Symbol | SSU |
Rfam | CL00111 |
Other data | |
PDB structures | PDBe |
Type | SSU rRNA size | Species | Length | Accession | Reference |
---|---|---|---|---|---|
Bacterial (Prokaryotic) | 16S | Escherichia coli | 1,541 nt | J01859.1 | [1] |
Archaeal (Prokaryotic) | 16S | Halobacterium salinarum | 1,473 nt | M38280.1 | [2] |
Eukaryotic | 18S | Homo sapiens | 1,969 nt | M10098.1 | [3] |
Mitochondrial | 12S | Homo sapiens | 954 nt | NC_012920.1 | [4][5] |
Plastid | 16S | Arabidopsis thaliana | 1,491 nt | NC_000932.1 | [6] |
SSU rRNA sequences are widely used for determining evolutionary relationships among organisms, since they are of ancient origin and are found in all known forms of life.[7]
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Ribosomal RNA / ribosome subunits
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Archaea (70S) |
Small (30S): | ||||||
Bacteria (70S) |
Small (30S): | ||||||
Eukaryotes |
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Ribosomal proteins | (See article table) |