Maltose/maltodextrin-binding periplasmic protein (malE) is a 396-residue protein from Escherichia coli (strain K12). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P0AEX9.
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The mean pLDDT of this model is 94.3 (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 | 92% |
| 70 to 90 | Confident: backbone generally right | 2% |
| 50 to 70 | Low: treat with caution | 1% |
| Below 50 | Very low: often disordered regions | 6% |
What pLDDT means and how to read it
Part of the ABC transporter complex MalEFGK involved in maltose/maltodextrin import. Binds maltose and higher maltodextrins such as maltotriose
The complex is composed of two ATP-binding proteins (MalK), two transmembrane proteins (MalG and MalF) and a solute-binding protein (MalE)
Periplasm
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 8C8F | X-ray | 1.15 Å | A=1-396 |
| 4EXK | X-ray | 1.28 Å | A=26-392 |
| 3Q27 | X-ray | 1.3 Å | A=27-392 |
| 7KD4 | X-ray | 1.31 Å | A/B=27-392 |
| 5M13 | X-ray | 1.37 Å | A=27-392 |
| 5HZ7 | X-ray | 1.43 Å | A=27-392 |
| 5H7Q | X-ray | 1.45 Å | A=27-396 |
| 4IRL | X-ray | 1.47 Å | A/B/C=27-384 |
| 6XDS | X-ray | 1.47 Å | A=27-392 |
| 8SVY | X-ray | 1.47 Å | A=27-392 |
| 3MP6 | X-ray | 1.48 Å | A=27-392 |
| 9CLC | X-ray | 1.48 Å | A=27-396 |
| 3KJT | X-ray | 1.5 Å | A=27-396 |
| 3O3U | X-ray | 1.5 Å | N=28-384 |
| 6SJA | X-ray | 1.5 Å | A=27-387 |
| 6K7E | X-ray | 1.53 Å | A=27-394 |
| 3Q26 | X-ray | 1.54 Å | A=27-392 |
| 3SEW | X-ray | 1.55 Å | A=27-384 |
| 4WMU | X-ray | 1.55 Å | A=27-392 |
| 8AX8 | X-ray | 1.55 Å | A=24-392 |
Showing 20 of 536 experimental structures (best resolution first).
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