Small ribosomal subunit protein uS2 (RPSA) is a 295-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P08865.
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The mean pLDDT of this model is 79.3 (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 | 61% |
| 70 to 90 | Confident: backbone generally right | 12% |
| 50 to 70 | Low: treat with caution | 4% |
| Below 50 | Very low: often disordered regions | 23% |
What pLDDT means and how to read it
Required for the assembly and/or stability of the 40S ribosomal subunit. Required for the processing of the 20S rRNA-precursor to mature 18S rRNA in a late step of the maturation of 40S ribosomal subunits. Also functions as a cell surface receptor for laminin. Plays a role in cell adhesion to the basement membrane and in the consequent activation of signaling transduction pathways. May play a role in cell fate determination and tissue morphogenesis. Acts as a PPP1R16B-dependent substrate of PPP1CA
Monomer (37LRP) and homodimer (67LR). Component of the small ribosomal subunit. Mature ribosomes consist of a small (40S) and a large (60S) subunit. The 40S subunit contains about 33 different proteins and 1 molecule of RNA (18S). The 60S subunit contains about 49 different proteins and 3 molecules of RNA (28S, 5.8S and 5S). Interacts with RPS21. Interacts with several laminins including at…
Cell membrane, Cytoplasm, Nucleus
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 8GLP | EM | 1.67 Å | SA=1-295 |
| 8QOI | EM | 1.9 Å | SA=1-295 |
| 9O3W | EM | 1.9 Å | SA=2-295 |
| 8YOO | EM | 2.0 Å | SA=1-295 |
| 9C3H | EM | 2.0 Å | SA=2-295 |
| 3BCH | X-ray | 2.15 Å | A=2-220 |
| 7R4X | EM | 2.15 Å | A=1-295 |
| 9I2D | EM | 2.19 Å | SA=1-295 |
| 9PBE | EM | 2.19 Å | SA=3-223 |
| 8YOP | EM | 2.2 Å | SA=1-295 |
| 9O3Y | EM | 2.2 Å | SA=2-295 |
| 8JDK | EM | 2.26 Å | x=1-295 |
| 8G5Y | EM | 2.29 Å | SA=1-295 |
| 9S3D | EM | 2.32 Å | SA=1-295 |
| 9RPV | EM | 2.35 Å | RA=2-295, SA=1-295 |
| 9S3B | EM | 2.38 Å | SA=1-295 |
| 8K2C | EM | 2.4 Å | SA=1-295 |
| 8XSX | EM | 2.4 Å | SA=1-295 |
| 9SPF | EM | 2.4 Å | SA=2-295 |
| 9SPI | EM | 2.4 Å | SA=1-295 |
Showing 20 of 186 experimental structures (best resolution first).
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