Xyloside xylosyltransferase 1 (Xxylt1) is a 392-residue protein from Mus musculus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q3U4G3.
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The mean pLDDT of this model is 85.6 (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 | 70% |
| 70 to 90 | Confident: backbone generally right | 8% |
| 50 to 70 | Low: treat with caution | 8% |
| Below 50 | Very low: often disordered regions | 13% |
What pLDDT means and how to read it
Alpha-1,3-xylosyltransferase, which elongates the O-linked xylose-glucose disaccharide attached to EGF-like repeats in the extracellular domain of target proteins by catalyzing the addition of the second xylose. Known targets include Notch proteins and coagulation factors, such as F9
Homodimer (PubMed:26414444). Dimer formation may be essential for the retention in endoplasmic reticulum (Probable)
Endoplasmic reticulum membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 4WMA | X-ray | 1.62 Å | A=87-392 |
| 4WMI | X-ray | 1.87 Å | A=87-392 |
| 4WN2 | X-ray | 1.95 Å | A=87-392 |
| 4WNH | X-ray | 1.95 Å | A=87-392 |
| 4WMB | X-ray | 2.05 Å | A=87-392 |
| 4WMK | X-ray | 2.08 Å | A=87-392 |
| 4WM0 | X-ray | 2.37 Å | A=87-392 |
| 4WLG | X-ray | 3.0 Å | A/B=87-392 |
| 4WLM | X-ray | 3.0 Å | A/B=87-392 |
| 4WLZ | X-ray | 3.03 Å | A/B=87-392 |
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