Yellow fluorescent protein (luxY) is a 194-residue protein from Aliivibrio fischeri. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P21578.
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The mean pLDDT of this model is 90.1 (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 | 75% |
| 70 to 90 | Confident: backbone generally right | 16% |
| 50 to 70 | Low: treat with caution | 6% |
| Below 50 | Very low: often disordered regions | 3% |
What pLDDT means and how to read it
Antenna protein that modulates the color of the bioluminescence emission of the luciferase. In the presence of YFP and only at temperatures below 20 degrees Celsius, luciferase exhibits a bimodal emission spectrum with a new peak at 545 nM (yellow), in addition to the one at 485 nM
Homodimer
Compare the prediction with experimentally determined structures of the same protein:
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