Interleukin-12 receptor subunit beta-1 (IL12RB1) is a 662-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P42701.
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The mean pLDDT of this model is 77.5 (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 | 32% |
| 70 to 90 | Confident: backbone generally right | 44% |
| 50 to 70 | Low: treat with caution | 9% |
| Below 50 | Very low: often disordered regions | 15% |
What pLDDT means and how to read it
Functions as an interleukin receptor which binds interleukin-12 with low affinity and is involved in IL12 transduction. Associated with IL12RB2 it forms a functional, high affinity receptor for IL12. Also associates with IL23R to form the interleukin-23 receptor which functions in IL23 signal transduction probably through activation of the Jak-Stat signaling cascade
Dimer or oligomer; disulfide-linked. Interacts with IL12RB2 to form the high affinity IL12 receptor. Heterodimer with IL23R; in presence of IL23. The heterodimer forms the IL23 receptor
Membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 6WDP | X-ray | 2.01 Å | A=27-239 |
| 8C7M | X-ray | 2.56 Å | A/B=232-540 |
| 6WDQ | X-ray | 3.4 Å | D=27-239 |
| 8YI7 | EM | 3.57 Å | D=24-236 |
| 8OE4 | EM | 3.6 Å | D=24-540 |
| 8XRP | EM | 3.75 Å | D/H/L/P=24-236 |
| 8ODX | X-ray | 4.4 Å | A=232-540 |
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