Serine protease inhibitor I/II is a 92-residue protein from Schistocerca gregaria. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: O46162.
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The mean pLDDT of this model is 88.1 (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 | 60% |
| 70 to 90 | Confident: backbone generally right | 32% |
| 50 to 70 | Low: treat with caution | 9% |
| Below 50 | Very low: often disordered regions | 0% |
What pLDDT means and how to read it
In vitro, is active against alpha-chymotrypsin and trypsin
Secreted
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 2XTT | X-ray | 0.93 Å | A=20-54 |
| 2F91 | X-ray | 1.2 Å | B=20-54 |
| 3TVJ | X-ray | 1.28 Å | I=57-91 |
| 4DJZ | X-ray | 3.2 Å | H/I=57-91 |
| 1KGM | NMR | A=57-91 | |
| 1KIO | NMR | A=57-91 | |
| 1KJ0 | NMR | A=20-54 |
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