Alpha-centractin (ACTR1A) is a 376-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P61163.
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The mean pLDDT of this model is 92.9 (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 | 87% |
| 70 to 90 | Confident: backbone generally right | 10% |
| 50 to 70 | Low: treat with caution | 1% |
| Below 50 | Very low: often disordered regions | 1% |
What pLDDT means and how to read it
Part of the ACTR1A/ACTB filament around which the dynactin complex is built. The dynactin multiprotein complex activates the molecular motor dynein for ultra-processive transport along microtubules
Part of the ACTR1A/ACTB filament around which the dynactin complex is built. The filament contains 8 copies of ACTR1A and 1 ACTB. Interacts with dynein and adapters such as BICD2 (By similarity). Interacts with BCCIP (isoform 2/alpha) (PubMed:28394342)
Cytoplasm, cytoskeleton, Cytoplasm, cytoskeleton, microtubule organizing center, centrosome, Cytoplasm, cell cortex
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 9B85 | EM | 3.47 Å | A/B/C/D/E/F/G/I=1-376 |
| 9B7J | EM | 3.49 Å | A/B/C/D/E/F/G/I=1-376 |
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