Hemocyanin II is a 628-residue protein from Limulus polyphemus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P04253.
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The mean pLDDT of this model is 95.3 (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 | 90% |
| 70 to 90 | Confident: backbone generally right | 8% |
| 50 to 70 | Low: treat with caution | 1% |
| Below 50 | Very low: often disordered regions | 1% |
What pLDDT means and how to read it
Hemocyanins are copper-containing oxygen carriers occurring freely dissolved in the hemolymph of many mollusks and arthropods
Hexamer or a multiple thereof
Secreted, extracellular space
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 1LLA | X-ray | 2.18 Å | A=1-628 |
| 1NOL | X-ray | 2.4 Å | A=1-628 |
| 1OXY | X-ray | 2.4 Å | A=1-628 |
| 1LL1 | X-ray | 2.55 Å | A=1-628 |
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