Outer membrane porin C (ompC) is a 367-residue protein from Escherichia coli (strain K12). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P06996.
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The mean pLDDT of this model is 93.2 (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 | 4% |
| 50 to 70 | Low: treat with caution | 1% |
| Below 50 | Very low: often disordered regions | 5% |
What pLDDT means and how to read it
Forms pores that allow passive diffusion of small molecules across the outer membrane
Homotrimer (PubMed:16949612, PubMed:2464593). Forms mixed heterotrimers with OmpF and with PhoE; other mixed heterotrimers are also probable (PubMed:2464593)
Cell outer membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 2J1N | X-ray | 2.0 Å | A/B/C=22-367 |
| 8I8R | EM | 2.93 Å | A/B/C=22-367 |
| 2J4U | X-ray | 2.99 Å | P/Q/R/U/V/W=22-367 |
| 8I8X | EM | 3.25 Å | A/B/C=22-367 |
| 2ZLE | EM | 28.0 Å | D=22-367 |
| 4A8D | EM | 28.0 Å | M=22-367 |
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