Immunoglobulin kappa constant (Igkc) is a 107-residue protein from Mus musculus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P01837.
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The mean pLDDT of this model is 96.3 (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 | 95% |
| 70 to 90 | Confident: backbone generally right | 4% |
| 50 to 70 | Low: treat with caution | 1% |
| Below 50 | Very low: often disordered regions | 0% |
What pLDDT means and how to read it
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 3D9A | X-ray | 1.2 Å | L=1-106 |
| 1RUR | X-ray | 1.5 Å | L=1-105 |
| 2AJU | X-ray | 1.5 Å | L=1-104 |
| 2AJV | X-ray | 1.5 Å | L=1-104 |
| 2W60 | X-ray | 1.5 Å | B=1-105 |
| 2W9D | X-ray | 1.57 Å | L=1-106 |
| 3BAE | X-ray | 1.59 Å | L=1-106 |
| 3BKJ | X-ray | 1.59 Å | L=1-107 |
| 2R1Y | X-ray | 1.6 Å | A=1-107 |
| 2R2B | X-ray | 1.6 Å | A=1-107 |
| 3BKM | X-ray | 1.6 Å | L=1-107 |
| 3CFB | X-ray | 1.6 Å | A/L=2-107 |
| 2R23 | X-ray | 1.65 Å | A=1-107 |
| 2V17 | X-ray | 1.65 Å | L=1-107 |
| 2AJS | X-ray | 1.7 Å | L=1-104 |
| 2R1W | X-ray | 1.7 Å | A=1-107 |
| 3CFC | X-ray | 1.7 Å | L=2-107 |
| 1P7K | X-ray | 1.75 Å | A/L=1-107 |
| 1Q9W | X-ray | 1.75 Å | A/C=1-107 |
| 1SEQ | X-ray | 1.78 Å | L=1-107 |
Showing 20 of 188 experimental structures (best resolution first).
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