Small ribosomal subunit protein uS15 (rpsO) is a 89-residue protein from Escherichia coli (strain K12). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P0ADZ4.
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The mean pLDDT of this model is 93.8 (very high overall). pLDDT is AlphaFold's per-residue confidence score from 0 to 100. In MolViewer, choose the B-factor color scheme to color the model by pLDDT, because AlphaFold stores it in the B-factor column.
| pLDDT band | Meaning | Share of residues |
|---|---|---|
| Above 90 | Very high: backbone and side chains are usually accurate | 87% |
| 70 to 90 | Confident: backbone generally right | 12% |
| 50 to 70 | Low: treat with caution | 1% |
| Below 50 | Very low: often disordered regions | 0% |
What pLDDT means and how to read it
One of the primary rRNA binding proteins, it binds directly to 16S rRNA where it helps nucleate assembly of the platform of the 30S subunit by binding and bridging several RNA helices of the 16S rRNA (PubMed:12809609, PubMed:16272117). Binds to its own mRNA, stabilizing it 5-UTR and preventing its translation (PubMed:24339747)
Part of the 30S ribosomal subunit (PubMed:10094780, PubMed:12244297, PubMed:12809609, PubMed:16272117, PubMed:27906160, PubMed:27906161, PubMed:27934701, PubMed:776686). Forms a bridge to the 50S subunit in the 70S ribosome, contacting the 23S rRNA (PubMed:12809609, PubMed:16272117)
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 8B0X | EM | 1.55 Å | O=1-89 |
| 9Q87 | EM | 1.55 Å | O=1-89 |
| 8CGJ | EM | 1.79 Å | O=1-89 |
| 8FTO | EM | 1.85 Å | O=1-89 |
| 9GHE | EM | 1.87 Å | O=1-89 |
| 8CGU | EM | 1.89 Å | O=1-89 |
| 8AYE | EM | 1.96 Å | O=1-89 |
| 7K00 | EM | 1.98 Å | O=1-89 |
| 8QOA | EM | 2.0 Å | O=1-89 |
| 9FDA | EM | 2.0 Å | O=1-89 |
| 8G6W | EM | 2.02 Å | O=1-89 |
| 8BIL | EM | 2.04 Å | s=1-89 |
| 8BIM | EM | 2.04 Å | s=1-89 |
| 8CEP | EM | 2.04 Å | O=1-89 |
| 8CAI | EM | 2.08 Å | O=1-89 |
| 9H8G | EM | 2.09 Å | O=1-89 |
| 4YBB | X-ray | 2.1 Å | AO/BO=2-89 |
| 8EMM | EM | 2.1 Å | O=1-89 |
| 9XTC | EM | 2.1 Å | O=1-89 |
| 8BGE | EM | 2.11 Å | s=1-89 |
Showing 20 of 542 experimental structures (best resolution first).
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