Intrinsic membrane protein PufX (pufX) is a 82-residue protein from Cereibacter sphaeroides (strain ATCC 17023 / DSM 158 / JCM 6121 / CCUG 31486 / LMG 2827 / NBRC 12203 / NCIMB 8253 / ATH 2.4.1.). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P13402.
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The mean pLDDT of this model is 74.3 (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 | 29% |
| 70 to 90 | Confident: backbone generally right | 22% |
| 50 to 70 | Low: treat with caution | 48% |
| Below 50 | Very low: often disordered regions | 1% |
What pLDDT means and how to read it
Associated with the reaction center - light-harvesting complex I. May play a critical role in facilitating the interaction between this complex and other components required for light-driven cyclic electron transfer
Cell membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 7PIL | EM | 2.5 Å | X=15-69 |
| 7VOR | EM | 2.74 Å | X/x=1-82 |
| 7VNY | EM | 2.79 Å | X=1-82 |
| 7VNM | EM | 2.86 Å | X=1-82 |
| 7VOT | EM | 2.9 Å | X/x=1-82 |
| 7F0L | EM | 2.94 Å | X=1-82 |
| 7VA9 | EM | 3.08 Å | C/c=1-82 |
| 7VB9 | EM | 3.45 Å | C/c=1-82 |
| 4V9G | X-ray | 7.78 Å | AB/BB=1-82 |
| 2DW3 | NMR | A=2-72 | |
| 2ITA | NMR | A=1-70 | |
| 2NRG | NMR | A=1-82 |
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