Chlorophyll a-b binding protein P4, chloroplastic (lhcA-P4) is a 252-residue protein from Pisum sativum. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q9SQL2.
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The mean pLDDT of this model is 80.1 (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 | 48% |
| 70 to 90 | Confident: backbone generally right | 30% |
| 50 to 70 | Low: treat with caution | 4% |
| Below 50 | Very low: often disordered regions | 18% |
What pLDDT means and how to read it
The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated
The LHC complex consists of chlorophyll a-b binding proteins
Plastid, chloroplast thylakoid membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 7DKZ | X-ray | 2.39 Å | 4=52-249 |
| 6YAC | EM | 2.5 Å | 4=52-249 |
| 5L8R | X-ray | 2.6 Å | 4=52-249 |
| 6YEZ | EM | 2.7 Å | 4=52-249 |
| 6ZOO | EM | 2.74 Å | 4=52-249 |
| 4XK8 | X-ray | 2.8 Å | 4/9=54-249 |
| 4Y28 | X-ray | 2.8 Å | 4=1-252 |
| 4RKU | X-ray | 3.0 Å | 4=53-248 |
| 6ZXS | X-ray | 3.0 Å | 4=52-249 |
| 2WSC | X-ray | 3.3 Å | 4=1-252 |
| 3LW5 | X-ray | 3.3 Å | 4=81-247 |
| 2O01 | X-ray | 3.4 Å | 4=85-249 |
| 2WSF | X-ray | 3.48 Å | 4=1-252 |
| 2WSE | X-ray | 3.49 Å | 4=1-252 |
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