Glutamine--tRNA ligase (glnS) is a 554-residue protein from Escherichia coli (strain K12). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P00962.
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The mean pLDDT of this model is 94.8 (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 | 91% |
| 70 to 90 | Confident: backbone generally right | 6% |
| 50 to 70 | Low: treat with caution | 1% |
| Below 50 | Very low: often disordered regions | 2% |
What pLDDT means and how to read it
Monomer
Cytoplasm
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 1QTQ | X-ray | 2.25 Å | A=2-554 |
| 4JXX | X-ray | 2.3 Å | A=2-554 |
| 4JXZ | X-ray | 2.4 Å | A=2-554 |
| 1GTR | X-ray | 2.5 Å | A=2-554 |
| 1ZJW | X-ray | 2.5 Å | A=2-554 |
| 4JYZ | X-ray | 2.5 Å | A=2-554 |
| 1EUY | X-ray | 2.6 Å | A=1-548 |
| 1NYL | X-ray | 2.6 Å | A=9-547 |
| 1QRS | X-ray | 2.6 Å | A=2-554 |
| 2RD2 | X-ray | 2.6 Å | A=1-548 |
| 2RE8 | X-ray | 2.6 Å | A=1-548 |
| 1EXD | X-ray | 2.7 Å | A=1-548 |
| 1O0B | X-ray | 2.7 Å | A=2-554 |
| 1O0C | X-ray | 2.7 Å | A=2-554 |
| 1QRT | X-ray | 2.7 Å | A=2-554 |
| 1GSG | X-ray | 2.8 Å | P=2-554 |
| 1GTS | X-ray | 2.8 Å | A=2-554 |
| 1QRU | X-ray | 3.0 Å | A=2-554 |
| 1EUQ | X-ray | 3.1 Å | A=1-548 |
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