ATP-dependent translocase ABCB1 (ABCB1) is a 1276-residue protein from Cricetulus griseus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P21448.
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The mean pLDDT of this model is 85.3 (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 | 60% |
| 70 to 90 | Confident: backbone generally right | 30% |
| 50 to 70 | Low: treat with caution | 3% |
| Below 50 | Very low: often disordered regions | 8% |
What pLDDT means and how to read it
Translocates phospholipids and drugs across the membrane. Catalyzes the flop of phospholipids from the cytoplasmic to the exoplasmic leaflet of the apical membrane. Participates mainly to the flop of phosphatidylcholine, phosphatidylethanolamine, beta-D-glucosylceramides and sphingomyelins. Energy-dependent efflux pump responsible for decreased drug accumulation in multidrug-resistant cells. May contribute to hepatobiliary and renal excretion of etiocholanolone-3-glucuronate. Appears to have very low activity toward testosterone, androsterone and dihydrotestosterone glucuronates
Interacts with PSMB5. Found in a complex with ABCB1, TFPI2 and PPP2R3C; leading to the dephosphorylation of ABCB1
Cell membrane, Apical cell membrane, Cytoplasm
Compare the prediction with experimentally determined structures of the same protein:
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