Streptogrisin-B (sprB) is a 299-residue protein from Streptomyces griseus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P00777.
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The mean pLDDT of this model is 89.3 (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 | 82% |
| 70 to 90 | Confident: backbone generally right | 5% |
| 50 to 70 | Low: treat with caution | 3% |
| Below 50 | Very low: often disordered regions | 11% |
What pLDDT means and how to read it
Has a primary specificity for large aliphatic or aromatic amino acids
Monomer
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 2QA9 | X-ray | 1.18 Å | E=115-299 |
| 2QAA | X-ray | 1.23 Å | A/B=115-299 |
| 1SGP | X-ray | 1.4 Å | E=115-299 |
| 1CT4 | X-ray | 1.6 Å | E=115-299 |
| 1CT2 | X-ray | 1.65 Å | E=115-299 |
| 2NU2 | X-ray | 1.65 Å | E=115-299 |
| 1DS2 | X-ray | 1.7 Å | E=115-299 |
| 2GKV | X-ray | 1.7 Å | E=115-299 |
| 2NU4 | X-ray | 1.75 Å | E=115-299 |
| 2SGF | X-ray | 1.75 Å | E=115-299 |
| 1CT0 | X-ray | 1.8 Å | E=115-299 |
| 1SGD | X-ray | 1.8 Å | E=115-299 |
| 1SGE | X-ray | 1.8 Å | E=115-299 |
| 1SGN | X-ray | 1.8 Å | E=115-299 |
| 1SGR | X-ray | 1.8 Å | E=115-299 |
| 1SGY | X-ray | 1.8 Å | E=115-299 |
| 2NU1 | X-ray | 1.8 Å | E=115-299 |
| 2NU3 | X-ray | 1.8 Å | E=115-299 |
| 2SGD | X-ray | 1.8 Å | E=115-299 |
| 2SGE | X-ray | 1.8 Å | E=115-299 |
Showing 20 of 28 experimental structures (best resolution first).
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