Maltose/maltodextrin-binding periplasmic protein (malE) is a 396-residue protein from Escherichia coli O157:H7. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P0AEY0.
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The mean pLDDT of this model is 94.4 (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
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 |
|---|---|---|---|
| 4WGI | X-ray | 1.85 Å | A=27-392 |
| 4WVI | X-ray | 1.9 Å | A=33-393 |
| 4WVJ | X-ray | 1.95 Å | A=33-393 |
| 4YS9 | X-ray | 2.0 Å | B=27-392 |
| 5II4 | X-ray | 2.0 Å | A=27-392 |
| 5JON | X-ray | 2.04 Å | A/B=27-392 |
| 4WVG | X-ray | 2.05 Å | A=33-393 |
| 3VD8 | X-ray | 2.07 Å | A=27-384 |
| 5ZD4 | X-ray | 2.17 Å | A/B/C/D=27-384 |
| 5LOF | X-ray | 2.2 Å | A=27-392 |
| 4MY2 | X-ray | 2.4 Å | A=25-392 |
| 7ZNJ | EM | 2.4 Å | D/I/N/d/i/n=23-392 |
| 4XAI | X-ray | 2.6 Å | A/B=27-392 |
| 9VFI | EM | 2.72 Å | A/B/C/D=27-392 |
| 5E7U | X-ray | 2.8 Å | A=27-395 |
| 9ME8 | X-ray | 2.93 Å | A=27-384 |
| 4XAJ | X-ray | 3.55 Å | A/B/C/D=26-392 |
| 9GIV | EM | 3.65 Å | C=33-392 |
| 9GIX | EM | 3.65 Å | C=33-392 |
| 9P0X | EM | 3.7 Å | T=27-392 |
Showing 20 of 23 experimental structures (best resolution first).
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