Large ribosomal subunit protein bL21 (rplU) is a 103-residue protein from Escherichia coli (strain K12). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P0AG48.
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The mean pLDDT of this model is 95.2 (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 | 91% |
| 70 to 90 | Confident: backbone generally right | 9% |
| 50 to 70 | Low: treat with caution | 0% |
| Below 50 | Very low: often disordered regions | 0% |
What pLDDT means and how to read it
This protein binds to 23S rRNA in the presence of protein L20
Part of the 50S ribosomal subunit (PubMed:10094780, PubMed:16272117, PubMed:24844575, PubMed:25310980, PubMed:27906160, PubMed:27906161, PubMed:27934701, PubMed:387076). Contacts protein L20 (PubMed:2665813, PubMed:6170935)
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 8B0X | EM | 1.55 Å | q=1-103 |
| 9Q87 | EM | 1.55 Å | q=1-103 |
| 8CGK | EM | 1.64 Å | q=1-103 |
| 8CGV | EM | 1.66 Å | q=1-103 |
| 8CEU | EM | 1.83 Å | q=1-103 |
| 8FTO | EM | 1.85 Å | q=1-103 |
| 8CAM | EM | 1.86 Å | q=1-103 |
| 9GHE | EM | 1.87 Å | q=1-103 |
| 9D89 | EM | 1.95 Å | q=1-103 |
| 8AYE | EM | 1.96 Å | q=1-103 |
| 7K00 | EM | 1.98 Å | q=1-103 |
| 8CGD | EM | 1.98 Å | q=1-103 |
| 8QOA | EM | 2.0 Å | q=1-103 |
| 8G6W | EM | 2.02 Å | q=1-103 |
| 8BIL | EM | 2.04 Å | O=1-103 |
| 8BIM | EM | 2.04 Å | O=1-103 |
| 8G6Y | EM | 2.09 Å | q=1-103 |
| 4YBB | X-ray | 2.1 Å | CS/DS=1-103 |
| 6XZ7 | EM | 2.1 Å | R=1-103 |
| 7QQ3 | EM | 2.1 Å | Z=1-103 |
Showing 20 of 584 experimental structures (best resolution first).
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