Proteasome chaperone 1 (PBA1) is a 276-residue protein from Saccharomyces cerevisiae (strain ATCC 204508 / S288c). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q05778.
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The mean pLDDT of this model is 77.4 (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 | 48% |
| 70 to 90 | Confident: backbone generally right | 23% |
| 50 to 70 | Low: treat with caution | 10% |
| Below 50 | Very low: often disordered regions | 20% |
What pLDDT means and how to read it
Involved in 20S proteasome assembly
Component of the 20S proteasome chaperone. Forms a heterodimer with ADD66 that binds to proteasome precursors
Cytoplasm
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 8RVL | EM | 2.14 Å | 4/7=1-276 |
| 8RVP | EM | 2.28 Å | 4/7=1-276 |
| 4G4S | X-ray | 2.49 Å | O=1-276 |
| 8RVO | EM | 2.69 Å | 4/7=1-276 |
| 8U6Y | EM | 2.8 Å | O/f=1-276 |
| 8T08 | EM | 3.0 Å | O/f=1-276 |
| 9RLT | EM | 3.09 Å | 4/7=1-276 |
| 9RLZ | EM | 3.12 Å | 4=1-276 |
| 9RLA | EM | 3.16 Å | 4=1-276 |
| 7LS6 | EM | 3.17 Å | O=1-276 |
| 9RM0 | EM | 3.29 Å | 4=1-276 |
| 9RL3 | EM | 3.31 Å | 4=1-276 |
| 7LSX | EM | 3.61 Å | O=1-276 |
| 9RM1 | EM | 4.11 Å | 4=1-276 |
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