Aquaporin-1 (AQP1) is a 271-residue protein from Bos taurus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P47865.
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The mean pLDDT of this model is 88.8 (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 | 69% |
| 70 to 90 | Confident: backbone generally right | 20% |
| 50 to 70 | Low: treat with caution | 6% |
| Below 50 | Very low: often disordered regions | 5% |
What pLDDT means and how to read it
Forms a water channel that facilitates the transport of water across cell membranes, playing a crucial role in water homeostasis in various tissues. Could also be permeable to small solutes including hydrogen peroxide, glycerol and gases such as amonnia (NH3), nitric oxide (NO) and carbon dioxide (CO2). Recruited to the ankyrin-1 complex, a multiprotein complex of the erythrocyte membrane, it could be part of a CO2 metabolon, linking facilitated diffusion of CO2 across the membrane, anion exchange of Cl(-)/HCO3(-) and interconversion of dissolved CO2 and carbonic acid in the cytosol. In vitro, it shows non-selective gated cation channel activity and may be permeable to cations like K(+)…
Homotetramer; each monomer provides an independent water pore (PubMed:11780053). Component of the ankyrin-1 complex in the erythrocyte, composed of ANK1, RHCE, RHAG, SLC4A1, EPB42, GYPA, GYPB and AQP1 (By similarity). Interacts with EPHB2; involved in endolymph production in the inner ear (By similarity). Identified in a complex with STOM. Interacts (via the N-terminal) with ANK1 (via ANK 1-5…
Cell membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 1J4N | X-ray | 2.2 Å | A=1-271 |
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