26S proteasome subunit RPT4 (RPT4) is a 437-residue protein from Saccharomyces cerevisiae (strain ATCC 204508 / S288c). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P53549.
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The mean pLDDT of this model is 81.9 (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 | 39% |
| 70 to 90 | Confident: backbone generally right | 44% |
| 50 to 70 | Low: treat with caution | 6% |
| Below 50 | Very low: often disordered regions | 10% |
What pLDDT means and how to read it
The 26S proteasome is involved in the ATP-dependent degradation of ubiquitinated proteins. The regulatory (or ATPase) complex confers ATP dependency and substrate specificity to the 26S complex (By similarity)
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 9CGC | EM | 3.61 Å | L=1-437 |
| 6J2Q | EM | 3.8 Å | L=1-437 |
| 6J2X | EM | 3.8 Å | L=1-437 |
| 5MP9 | EM | 4.1 Å | L=1-437 |
| 6FVT | EM | 4.1 Å | L=49-436 |
| 6EF3 | EM | 4.17 Å | L=1-437 |
| 5WVK | EM | 4.2 Å | L=1-437 |
| 6EF2 | EM | 4.27 Å | L=166-429 |
| 6EF0 | EM | 4.43 Å | L=164-436 |
| 5MPA | EM | 4.5 Å | L=1-437 |
| 6FVU | EM | 4.5 Å | L=49-436 |
| 6FVW | EM | 4.5 Å | L=49-436 |
| 6J30 | EM | 4.5 Å | L=1-437 |
| 3JCP | EM | 4.6 Å | L=1-437 |
| 6EF1 | EM | 4.73 Å | L=166-436 |
| 3JCO | EM | 4.8 Å | L=1-437 |
| 6FVX | EM | 4.9 Å | L=49-436 |
| 6FVV | EM | 5.4 Å | L=49-436 |
| 7QO5 | EM | 6.0 Å | L=1-437 |
| 6FVY | EM | 6.1 Å | L=49-436 |
Showing 20 of 31 experimental structures (best resolution first).
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