Snurportin-1 (SNUPN) is a 360-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: O95149.
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The mean pLDDT of this model is 82.8 (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 | 58% |
| 70 to 90 | Confident: backbone generally right | 22% |
| 50 to 70 | Low: treat with caution | 6% |
| Below 50 | Very low: often disordered regions | 13% |
What pLDDT means and how to read it
Functions as an U snRNP-specific nuclear import adapter. Involved in the trimethylguanosine (m3G)-cap-dependent nuclear import of U snRNPs. Binds specifically to the terminal m3G-cap U snRNAs
Component of an import snRNP complex composed of KPNB1, SNUPN, SMN1 and ZNF259. Component of a nuclear export receptor complex composed of KPNB1, Ran, SNUPN and XPO1. Found in a trimeric export complex with SNUPN, Ran and XPO1. Interacts (via IBB domain) with KPNB1; the interaction is direct. Interacts with DDX20, IPO7, SMN1, SNRPB and XPO1. Interacts directly with XPO1. Its interaction with…
Nucleus, Cytoplasm
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 2P8Q | X-ray | 2.35 Å | B=25-64 |
| 1XK5 | X-ray | 2.4 Å | A=97-300 |
| 3GJX | X-ray | 2.5 Å | B/E=1-360 |
| 3NBZ | X-ray | 2.8 Å | B/E=15-360 |
| 2QNA | X-ray | 2.84 Å | B=1-66 |
| 5DIS | X-ray | 2.85 Å | C=1-287 |
| 3GB8 | X-ray | 2.9 Å | B=1-328 |
| 3NC0 | X-ray | 2.9 Å | B/E=15-360 |
| 3LWW | X-ray | 3.15 Å | B/D=25-64 |
| 2Q5D | X-ray | 3.2 Å | C/D=25-64 |
| 3NBY | X-ray | 3.42 Å | B/E=15-360 |
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