Ig gamma-2B chain C region (Igh-1a) is a 333-residue protein from Rattus norvegicus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P20761.
Explore in 3D Color by confidence AlphaFold DB UniProt
The mean pLDDT of this model is 90.3 (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 | 77% |
| 70 to 90 | Confident: backbone generally right | 13% |
| 50 to 70 | Low: treat with caution | 7% |
| Below 50 | Very low: often disordered regions | 3% |
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 |
|---|---|---|---|
| 1C5D | X-ray | 2.4 Å | B/H=1-98 |
| 1BFO | X-ray | 2.6 Å | B/D/F/H=1-95 |
| 3B9K | X-ray | 2.7 Å | D/H=1-96 |
| 2ARJ | X-ray | 2.88 Å | B/H=1-98 |
MolViewer loads the AlphaFold model straight from AlphaFold DB into your browser. Show it as a cartoon, color by pLDDT, measure distances and angles, and load a PDB structure next to it to compare.