Colicin-A (caa) is a 592-residue protein from Citrobacter freundii. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P04480.
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The mean pLDDT of this model is 84.1 (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 | 63% |
| 70 to 90 | Confident: backbone generally right | 20% |
| 50 to 70 | Low: treat with caution | 5% |
| Below 50 | Very low: often disordered regions | 12% |
What pLDDT means and how to read it
This colicin is a channel-forming colicin. This class of transmembrane toxins depolarize the cytoplasmic membrane, leading to dissipation of cellular energy
Cell membrane
Compare the prediction with experimentally determined structures of the same protein:
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