Outer membrane porin F (ompF) is a 362-residue protein from Escherichia coli (strain K12). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P02931.
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The mean pLDDT of this model is 94.3 (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 | 94% |
| 70 to 90 | Confident: backbone generally right | 0% |
| 50 to 70 | Low: treat with caution | 1% |
| Below 50 | Very low: often disordered regions | 6% |
What pLDDT means and how to read it
Forms pores that allow passive diffusion of small molecules across the outer membrane
Homotrimer (PubMed:16079137, PubMed:18636093, PubMed:2464593, PubMed:9843370). Forms mixed heterotrimers with OmpC 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 |
|---|---|---|---|
| 2ZFG | X-ray | 1.59 Å | A=23-362 |
| 4GCS | X-ray | 1.87 Å | A/B=23-362 |
| 3POQ | X-ray | 1.9 Å | A=23-362 |
| 4LSF | X-ray | 1.9 Å | A/B=23-362 |
| 6ZHV | X-ray | 1.95 Å | A/B/C=1-362 |
| 4GCP | X-ray | 1.98 Å | A/B=23-362 |
| 3POX | X-ray | 2.0 Å | A/B/C/D/E/F=23-362 |
| 6ZHP | X-ray | 2.05 Å | B=1-362 |
| 4LSI | X-ray | 2.09 Å | A/B/C=23-362 |
| 4LSE | X-ray | 2.1 Å | A/B/C=23-362 |
| 1HXX | X-ray | 2.2 Å | A=23-362 |
| 4GCQ | X-ray | 2.2 Å | A/B=23-362 |
| 4LSH | X-ray | 2.2 Å | A/B=23-362 |
| 9J9M | X-ray | 2.29 Å | A/B=23-362 |
| 1HXT | X-ray | 2.4 Å | A=23-362 |
| 2OMF | X-ray | 2.4 Å | A=23-362 |
| 9J9L | X-ray | 2.6 Å | A=23-362 |
| 3HW9 | X-ray | 2.61 Å | A/B=1-362 |
| 1GFP | X-ray | 2.7 Å | A=23-362 |
| 1GFQ | X-ray | 2.8 Å | A=23-362 |
Showing 20 of 47 experimental structures (best resolution first).
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