Myosin-4 (Myh4) is a 1939-residue protein from Mus musculus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q5SX39.
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The mean pLDDT of this model is 74.5 (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 | 10% |
| 70 to 90 | Confident: backbone generally right | 56% |
| 50 to 70 | Low: treat with caution | 30% |
| Below 50 | Very low: often disordered regions | 4% |
What pLDDT means and how to read it
Muscle contraction
Muscle myosin is a hexameric protein that consists of 2 heavy chain subunits (MHC), 2 alkali light chain subunits (MLC) and 2 regulatory light chain subunits (MLC-2)
Cytoplasm, myofibril
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 7QIN | EM | 6.6 Å | L/M=1-848 |
| 7QIO | EM | 9.0 Å | L/M=1-848 |
| 7NEP | EM | 10.2 Å | L/M=32-844 |
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