H-2 class I histocompatibility antigen, K-B alpha chain (H2-K1) is a 369-residue protein from Mus musculus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P01901.
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The mean pLDDT of this model is 87.1 (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 | 75% |
| 70 to 90 | Confident: backbone generally right | 7% |
| 50 to 70 | Low: treat with caution | 4% |
| Below 50 | Very low: often disordered regions | 13% |
What pLDDT means and how to read it
Involved in the presentation of foreign antigens to the immune system
Heterodimer of an alpha chain and a beta chain (beta-2-microglobulin)
Membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 1LK2 | X-ray | 1.35 Å | A=22-295 |
| 1G7P | X-ray | 1.5 Å | A=22-295 |
| 1KPU | X-ray | 1.5 Å | A=22-295 |
| 1G7Q | X-ray | 1.6 Å | A=22-295 |
| 3TID | X-ray | 1.65 Å | A=22-297 |
| 1FZK | X-ray | 1.7 Å | A=22-295 |
| 1KPV | X-ray | 1.71 Å | A=22-295 |
| 1LEG | X-ray | 1.75 Å | A=22-295 |
| 6GB6 | X-ray | 1.78 Å | A/D=22-297 |
| 1FZM | X-ray | 1.8 Å | A=22-295 |
| 1FZO | X-ray | 1.8 Å | A=22-295 |
| 1T0N | X-ray | 1.8 Å | A/D=22-299 |
| 2QRT | X-ray | 1.8 Å | A/B=22-301 |
| 2ZSV | X-ray | 1.8 Å | A/C=22-299 |
| 1FZJ | X-ray | 1.9 Å | A=22-295 |
| 1RJY | X-ray | 1.9 Å | A/D=22-301 |
| 2CLV | X-ray | 1.9 Å | A/H=22-300 |
| 2CLZ | X-ray | 1.9 Å | A/H=22-300 |
| 5OQG | X-ray | 1.9 Å | A/B=22-304 |
| 7JI2 | X-ray | 1.95 Å | A/D=22-301 |
Showing 20 of 85 experimental structures (best resolution first).
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