Cell division protein FtsB (ftsB) is a 103-residue protein from Escherichia coli (strain K12). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P0A6S5.
Explore in 3D Color by confidence AlphaFold DB UniProt
The mean pLDDT of this model is 81.6 (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 | 26% |
| 70 to 90 | Confident: backbone generally right | 52% |
| 50 to 70 | Low: treat with caution | 20% |
| Below 50 | Very low: often disordered regions | 1% |
What pLDDT means and how to read it
Essential cell division protein. May link together the upstream cell division proteins, which are predominantly cytoplasmic, with the downstream cell division proteins, which are predominantly periplasmic
Part of a complex composed of FtsB, FtsL and FtsQ. The complex can be formed before its localization to the division site. This tripartite complex can be divided further into a subcomplex of FtsB and FtsL, which forms in the absence of FtsQ. Also interacts with FtsI and FtsN
Cell inner membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 4IFF | X-ray | 2.3 Å | A/B/C/D=28-63 |
| 6H9N | X-ray | 2.6 Å | B=22-103 |
| 6H9O | X-ray | 2.8 Å | B/D=64-87 |
| 5Z2W | X-ray | 3.0 Å | B=61-95 |
| 8HHF | X-ray | 3.04 Å | B=1-103 |
| 8HHG | X-ray | 3.1 Å | B=1-103 |
| 8HHH | X-ray | 3.3 Å | B=1-103 |
MolViewer loads the AlphaFold model straight from AlphaFold DB into your browser. Show it as a cartoon, color by pLDDT, measure distances and angles, and load a PDB structure next to it to compare.