Protein map (map) is a 476-residue protein from Staphylococcus aureus (strain Mu50 / ATCC 700699). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q99QS1.
Explore in 3D Color by confidence AlphaFold DB UniProt
The mean pLDDT of this model is 77.3 (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 | 33% |
| 70 to 90 | Confident: backbone generally right | 43% |
| 50 to 70 | Low: treat with caution | 11% |
| Below 50 | Very low: often disordered regions | 13% |
What pLDDT means and how to read it
Serine protease inhibitor that acts as an innate immune evasion factor (PubMed:25161283, PubMed:36736422, PubMed:39098536). Specifically inhibits CTSG and ELANE, the most abundant neutrophil serine proteases (PubMed:25161283, PubMed:36736422, PubMed:39098536). Required both to inhibit the activity of neutrophils and protect S.aureus immune evasion proteins from degradation by neutrophil serine proteases (PubMed:26418545). May also enhance the adherence of S.aureus for host cells (By similarity)
Secreted, Cell surface
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 1YN3 | X-ray | 1.35 Å | A/B=160-254 |
| 8D4O | X-ray | 1.45 Å | A/B/C/D=49-145 |
| 9ASS | X-ray | 1.75 Å | C=372-476 |
| 8D4V | X-ray | 1.85 Å | B/D=158-254 |
| 8D4U | X-ray | 1.9 Å | C/D=158-254 |
| 8D4S | X-ray | 1.95 Å | B/D/F/H=49-145 |
| 9ASX | X-ray | 1.96 Å | C=267-363 |
| 9ATU | X-ray | 2.05 Å | B/E=372-476 |
| 9ATK | X-ray | 2.11 Å | C/F/I/L=372-476 |
| 8D4Q | X-ray | 2.2 Å | C/D=49-145 |
| 8D7K | X-ray | 3.1 Å | B/E/H/K=158-254 |
| 8D7I | X-ray | 3.63 Å | B/E/H/K/N/Q=49-145 |
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