DNA-binding protein inhibitor ID-1 (Id1) is a 168-residue protein from Mus musculus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P20067.
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The mean pLDDT of this model is 62.0 (low 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 | 3% |
| 70 to 90 | Confident: backbone generally right | 29% |
| 50 to 70 | Low: treat with caution | 42% |
| Below 50 | Very low: often disordered regions | 26% |
What pLDDT means and how to read it
Transcriptional regulator (lacking a basic DNA binding domain) which negatively regulates the basic helix-loop-helix (bHLH) transcription factors by forming heterodimers and inhibiting their DNA binding and transcriptional activity. Implicated in regulating a variety of cellular processes, including cellular growth, senescence, differentiation, apoptosis, angiogenesis, and neoplastic transformation. Inhibits skeletal muscle and cardiac myocyte differentiation. Regulates the circadian clock by repressing the transcriptional activator activity of the CLOCK-BMAL1 heterodimer
Heterodimer with other HLH proteins. Interacts with CLOCK and BMAL1 (By similarity). Interacts with COPS5, IFI204, GATA4 and NKX2-5
Cytoplasm, Nucleus
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 6U2U | X-ray | 1.5 Å | A/B=59-104 |
| 6MGM | X-ray | 1.79 Å | A/B=52-104 |
| 6MGN | X-ray | 1.9 Å | B=58-104 |
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