[D-Ala2]-deltorphins is a 227-residue protein from Phyllomedusa bicolor. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P21850.
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The mean pLDDT of this model is 44.5 (very low 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 | 3% |
| 70 to 90 | Confident: backbone generally right | 6% |
| 50 to 70 | Low: treat with caution | 11% |
| Below 50 | Very low: often disordered regions | 81% |
What pLDDT means and how to read it
Deltorphin is a heptapeptide with a very potent opiate-like activity. Has high affinity and selectivity for delta-type opioid receptors. The two dermorphin-like peptides have a similar affinity and selectivity for the mu opioid receptor as dermorphin
Secreted
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 8F7S | EM | 3.0 Å | P/Q=107-113 |
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