Ubiquitin-conjugating enzyme E2 4 (UBC4) is a 148-residue protein from Saccharomyces cerevisiae (strain ATCC 204508 / S288c). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P15731.
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The mean pLDDT of this model is 95.6 (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 | 95% |
| 70 to 90 | Confident: backbone generally right | 4% |
| 50 to 70 | Low: treat with caution | 1% |
| Below 50 | Very low: often disordered regions | 0% |
What pLDDT means and how to read it
E2 ubiquitin-conjugating enzyme that catalyzes the covalent attachment of ubiquitin to other proteins (PubMed:17550898). Mediates the selective degradation of short-lived and abnormal proteins (PubMed:17550898). Mediates ubiquitination of PEX5 (PubMed:17550898)
Interacts with TUL1
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 1QCQ | X-ray | 2.7 Å | A=1-148 |
| 5AIE | X-ray | 2.8 Å | B=1-148 |
| 8J1R | EM | 3.52 Å | C=1-148 |
| 9M7O | EM | 4.14 Å | B=1-148 |
| 9KHS | EM | 4.31 Å | B=1-148 |
| 9KHT | EM | 4.85 Å | B/b=1-148 |
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