Human nkt tcr alpha chain (B2M) is a 220-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Jun 2022. UniProt accession: K7N5M3.
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The mean pLDDT of this model is 87.8 (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 | 70% |
| 70 to 90 | Confident: backbone generally right | 19% |
| 50 to 70 | Low: treat with caution | 5% |
| Below 50 | Very low: often disordered regions | 7% |
What pLDDT means and how to read it
Cell membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 6MJJ | X-ray | 1.93 Å | C=96-114, C=116-210 |
| 6MJ4 | X-ray | 2.0 Å | C=96-114, C=116-210 |
| 6MIV | X-ray | 2.05 Å | C=96-114, C=116-210 |
| 5WLG | X-ray | 2.1 Å | D/I=9-94, D/I=118-194 |
| 6MJI | X-ray | 2.3 Å | C=96-114, C=116-210 |
| 6R2L | X-ray | 2.3 Å | D=118-198 |
| 6D78 | X-ray | 2.35 Å | D=5-206 |
| 6MJA | X-ray | 2.35 Å | C=96-114, C=116-210 |
| 6MJ6 | X-ray | 2.45 Å | C=96-114, C=116-210 |
| 4EN3 | X-ray | 2.57 Å | A=1-220 |
| 8T4Z | X-ray | 2.69 Å | C=116-210 |
| 6MIY | X-ray | 2.75 Å | C/G=96-114, C/G=116-210 |
| 5MEN | X-ray | 2.81 Å | D=124-206 |
| 4ZAK | X-ray | 2.82 Å | C=117-210 |
| 6CW6 | X-ray | 2.85 Å | C=3-210 |
| 4MJI | X-ray | 2.99 Å | D/I=7-203 |
| 6MJQ | X-ray | 3.0 Å | C/G=96-114, C/G=116-210 |
| 6PX6 | X-ray | 3.0 Å | D=3-210 |
| 4NDM | X-ray | 3.01 Å | B=118-220 |
| 5VCJ | X-ray | 3.16 Å | C=116-210 |
Showing 20 of 22 experimental structures (best resolution first).
MolViewer loads the AlphaFold model straight from AlphaFold DB into your browser. Show it as a cartoon, color by pLDDT, measure distances and angles, and load a PDB structure next to it to compare.