Light-harvesting protein B-800/850 beta chain is a 41-residue protein from Rhodoblastus acidophilus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P26790.
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The mean pLDDT of this model is 96.5 (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 | 7% |
| 50 to 70 | Low: treat with caution | 0% |
| Below 50 | Very low: often disordered regions | 0% |
What pLDDT means and how to read it
Antenna complexes are light-harvesting systems, which transfer the excitation energy to the reaction centers
The core complex is formed by different alpha and beta chains, binding bacteriochlorophyll molecules, and arranged most probably in tetrameric structures disposed around the reaction center. The non-pigmented gamma chains may constitute additional components
Cell inner membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 1NKZ | X-ray | 2.0 Å | B/D/F=1-41 |
| 9EK8 | EM | 2.35 Å | B/D/F/H/J/L/N/P/R=1-41 |
| 2FKW | X-ray | 2.45 Å | B/D/F/H/J/L/N/P/S=1-41 |
| 1KZU | X-ray | 2.5 Å | B/E/H=1-41 |
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