Syntaxin-4 (Stx4) is a 298-residue protein from Mus musculus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P70452.
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The mean pLDDT of this model is 78.3 (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 | 38% |
| 70 to 90 | Confident: backbone generally right | 33% |
| 50 to 70 | Low: treat with caution | 20% |
| Below 50 | Very low: often disordered regions | 10% |
What pLDDT means and how to read it
Plasma membrane t-SNARE that mediates docking of transport vesicles. Necessary for the translocation of SLC2A4 from intracellular vesicles to the plasma membrane. In neurons, recruited at neurite tips to membrane domains rich in the phospholipid 1-oleoyl-2-palmitoyl-PC (OPPC) which promotes neurite tip surface expression of the dopamine transporter SLC6A3/DAT by facilitating fusion of SLC6A3-containing transport vesicles with the plasma membrane (By similarity). Together with STXB3 and VAMP2, may also play a role in docking/fusion of intracellular GLUT4-containing vesicles with the cell surface in adipocytes and in docking of synaptic vesicles at presynaptic active zones. Required for…
Interacts with STXBP6. Component of the SNARE complex composed of STX4, SNAP23 and VAMP7 that interacts with SYT7 during lysosomal exocytosis (By similarity). Found in a complex with VAMP8 and SNAP23. Detected in a complex with SNAP23 and STXBP4. Interacts with VAMP2. Interacts with SNAP23 and SNAPIN. Interacts with LLGL1. Interacts (via C-terminus) with CENPF. Interacts with DOC2B. Interacts…
Cell membrane, Cell projection, neuron projection, Cell projection, stereocilium, Cytoplasm, perinuclear region
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 8BBJ | X-ray | 2.65 Å | A/B=87-109 |
| 3PUK | X-ray | 3.05 Å | C/D=1-10 |
| 3PUJ | X-ray | 3.31 Å | C/D=1-10 |
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