Endo-1,4-beta-xylanase (xlnA) is a 213-residue protein from Niallia circulans. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P09850.
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The mean pLDDT of this model is 90.8 (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 | 86% |
| 70 to 90 | Confident: backbone generally right | 1% |
| 50 to 70 | Low: treat with caution | 1% |
| Below 50 | Very low: often disordered regions | 13% |
What pLDDT means and how to read it
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 8QY3 | X-ray | 1.24 Å | A=29-213 |
| 8R85 | X-ray | 1.3 Å | A=29-213 |
| 8QXY | X-ray | 1.41 Å | A/B=29-213 |
| 1XNB | X-ray | 1.49 Å | A=29-213 |
| 2BVV | X-ray | 1.5 Å | A=29-213 |
| 8QXZ | X-ray | 1.5 Å | A/B=29-213 |
| 8R86 | X-ray | 1.5 Å | A/B=29-213 |
| 1C5H | X-ray | 1.55 Å | A=29-213 |
| 3VZK | X-ray | 1.55 Å | A/B=29-213 |
| 1HV0 | X-ray | 1.6 Å | A=29-213 |
| 1XNC | X-ray | 1.6 Å | A=29-213 |
| 3VZN | X-ray | 1.67 Å | A/B=29-213 |
| 8QY2 | X-ray | 1.7 Å | A=29-213 |
| 3VZO | X-ray | 1.73 Å | A=29-213 |
| 1BVV | X-ray | 1.8 Å | A=29-213 |
| 1C5I | X-ray | 1.8 Å | A=29-213 |
| 1HV1 | X-ray | 1.8 Å | A=29-213 |
| 1BCX | X-ray | 1.81 Å | A=29-213 |
| 3VZM | X-ray | 1.86 Å | A=29-213 |
| 8QY0 | X-ray | 1.9 Å | A/B=29-213 |
Showing 20 of 31 experimental structures (best resolution first).
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