H-2 class I histocompatibility antigen, D-D alpha chain (H2-D1) is a 365-residue protein from Mus musculus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P01900.
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The mean pLDDT of this model is 85.9 (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 | 11% |
| 50 to 70 | Low: treat with caution | 8% |
| Below 50 | Very low: often disordered regions | 11% |
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 |
|---|---|---|---|
| 5WEU | X-ray | 1.58 Å | A=26-301 |
| 3ECB | X-ray | 1.7 Å | A=26-301 |
| 8FHU | X-ray | 1.8 Å | A/D=26-301 |
| 5T7G | X-ray | 1.96 Å | A/C=26-300 |
| 3E6H | X-ray | 2.1 Å | A=26-299 |
| 5IVX | X-ray | 2.1 Å | A=26-301 |
| 8FHL | X-ray | 2.19 Å | A=26-301 |
| 1QO3 | X-ray | 2.3 Å | A=26-301 |
| 8D5F | X-ray | 2.31 Å | A=26-299 |
| 5KD7 | X-ray | 2.35 Å | A/C/F/I=26-300 |
| 6NPR | X-ray | 2.37 Å | A/C=26-301 |
| 1BII | X-ray | 2.4 Å | A=1-365 |
| 3E6F | X-ray | 2.41 Å | A=26-298 |
| 8D5E | X-ray | 2.46 Å | A=26-299 |
| 3DMM | X-ray | 2.6 Å | A=26-299 |
| 5WET | X-ray | 2.64 Å | A=26-301 |
| 9D72 | EM | 2.67 Å | A=26-298 |
| 8TQ8 | X-ray | 2.69 Å | A/C=26-298 |
| 5WES | X-ray | 2.71 Å | A=26-301 |
| 8TQ7 | X-ray | 2.8 Å | A/C=26-298 |
Showing 20 of 25 experimental structures (best resolution first).
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