Photosynthetic reaction center cytochrome c subunit (pufC) is a 356-residue protein from Blastochloris viridis. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P07173.
Explore in 3D Color by confidence AlphaFold DB UniProt
The mean pLDDT of this model is 95.5 (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 | 93% |
| 70 to 90 | Confident: backbone generally right | 1% |
| 50 to 70 | Low: treat with caution | 6% |
| Below 50 | Very low: often disordered regions | 1% |
What pLDDT means and how to read it
The reaction center of purple bacteria contains a tightly bound cytochrome molecule which re-reduces the photo oxidized primary electron donor
Component of the photosynthetic reaction center composed of protein subunits L (PufL), M (PufM), H (PuhA) and cytochrome C (PufC)
Cellular chromatophore membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 2WJN | X-ray | 1.86 Å | C=21-356 |
| 3T6E | X-ray | 1.92 Å | C=1-356 |
| 2WJM | X-ray | 1.95 Å | C=21-356 |
| 3T6D | X-ray | 1.95 Å | C=1-356 |
| 2I5N | X-ray | 1.96 Å | C=21-356 |
| 1DXR | X-ray | 2.0 Å | C=21-356 |
| 1VRN | X-ray | 2.2 Å | C=21-352 |
| 7Q7Q | X-ray | 2.25 Å | CCC=21-356 |
| 1PRC | X-ray | 2.3 Å | C=21-356 |
| 6PRC | X-ray | 2.3 Å | C=21-356 |
| 5PRC | X-ray | 2.35 Å | C=21-356 |
| 2JBL | X-ray | 2.4 Å | C=1-356 |
| 3PRC | X-ray | 2.4 Å | C=21-356 |
| 5NJ4 | X-ray | 2.4 Å | C=21-356 |
| 7Q7P | X-ray | 2.4 Å | CCC=1-356 |
| 2PRC | X-ray | 2.45 Å | C=21-356 |
| 3G7F | X-ray | 2.5 Å | C=21-356 |
| 7PRC | X-ray | 2.65 Å | C=21-356 |
| 5O4C | X-ray | 2.8 Å | C=21-356 |
| 6ZHW | X-ray | 2.8 Å | C=21-356 |
Showing 20 of 38 experimental structures (best resolution first).
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.