Small ribosomal subunit protein uS7 (rpsG) is a 179-residue protein from Escherichia coli (strain K12). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P02359.
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The mean pLDDT of this model is 86.8 (confident 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 | 75% |
| 70 to 90 | Confident: backbone generally right | 11% |
| 50 to 70 | Low: treat with caution | 3% |
| Below 50 | Very low: often disordered regions | 11% |
What pLDDT means and how to read it
One of the primary rRNA binding proteins, it binds directly to 16S rRNA where it nucleates assembly of the head domain of the 30S subunit (PubMed:2461734). Is located at the subunit interface close to the decoding center, where it has been shown to contact mRNA (PubMed:10606263). Has been shown to contact tRNA in both the P and E sites; it probably blocks exit of the E site tRNA (PubMed:8524654)
Part of the 30S ribosomal subunit (PubMed:10094780, PubMed:12244297, PubMed:12809609, PubMed:16272117, PubMed:27906160, PubMed:27906161, PubMed:27934701, PubMed:28077875, PubMed:385062, PubMed:7556101). Contacts proteins S9 and S11 (By similarity). Cross-links to IF3 and the P and E site tRNAs (PubMed:6349681, PubMed:7000779, PubMed:8524654). In proline-stalled ribosomes contacts EF-P…
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 8B0X | EM | 1.55 Å | G=1-179 |
| 9Q87 | EM | 1.55 Å | G=1-179 |
| 8CF1 | EM | 1.82 Å | G=1-179 |
| 8FTO | EM | 1.85 Å | G=1-179 |
| 9GHE | EM | 1.87 Å | G=1-179 |
| 8CGI | EM | 1.89 Å | G=1-179 |
| 8AYE | EM | 1.96 Å | G=1-179 |
| 7K00 | EM | 1.98 Å | G=1-179 |
| 8QOA | EM | 2.0 Å | G=1-179 |
| 8G6W | EM | 2.02 Å | G=1-179 |
| 8BIL | EM | 2.04 Å | k=1-179 |
| 8BIM | EM | 2.04 Å | k=1-179 |
| 8CA7 | EM | 2.06 Å | G=1-179 |
| 4YBB | X-ray | 2.1 Å | AG/BG=2-152 |
| 8EMM | EM | 2.1 Å | G=1-179 |
| 8BGE | EM | 2.11 Å | k=1-179 |
| 8CAZ | EM | 2.11 Å | G=1-179 |
| 9SLG | EM | 2.16 Å | G=1-156 |
| 8CF8 | EM | 2.2 Å | G=1-179 |
| 8QBT | EM | 2.2 Å | o=1-179 |
Showing 20 of 549 experimental structures (best resolution first).
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