Immunoglobulin A1 protease (iga) is a 1963-residue protein from Streptococcus pneumoniae (strain ATCC BAA-255 / R6). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q59947.
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The mean pLDDT of this model is 73.2 (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 | 47% |
| 70 to 90 | Confident: backbone generally right | 23% |
| 50 to 70 | Low: treat with caution | 4% |
| Below 50 | Very low: often disordered regions | 26% |
What pLDDT means and how to read it
Zinc metalloproteinase which cleaves human immunoglobulin A1 (IgA1) in the hinge region
Secreted, cell wall, Membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 6XJB | EM | 3.8 Å | A=674-1958 |
| 6XJA | EM | 4.0 Å | P=665-1963 |
| 7JGJ | EM | 4.8 Å | A=674-1963 |
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