Glutamine--tRNA ligase (QARS1) is a 775-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P47897.
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The mean pLDDT of this model is 89.8 (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 | 78% |
| 70 to 90 | Confident: backbone generally right | 15% |
| 50 to 70 | Low: treat with caution | 3% |
| Below 50 | Very low: often disordered regions | 4% |
What pLDDT means and how to read it
Glutamine--tRNA ligase (PubMed:26869582). Plays a critical role in brain development (PubMed:24656866)
Monomer (PubMed:26869582). Part of a multisubunit complex that groups tRNA ligases for Arg (RARS1), Asp (DARS1), Gln (QARS1), Ile (IARS1), Leu (LARS1), Lys (KARS1), Met (MARS1) the bifunctional ligase for Glu and Pro (EPRS1) and the auxiliary subunits AIMP1/p43, AIMP2/p38 and EEF1E1/p18 (PubMed:19131329, PubMed:19289464). Interacts with RARS1 (PubMed:24656866). Part of a complex composed of…
Cytoplasm, cytosol, Cytoplasm
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 4YE6 | X-ray | 2.4 Å | A=1-775 |
| 4YE9 | X-ray | 2.7 Å | A=1-775 |
| 4YE8 | X-ray | 3.3 Å | A=1-775 |
| 4R3Z | X-ray | 4.03 Å | C=1-775 |
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