Phosphorylated adapter RNA export protein (PHAX) is a 394-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q9H814.
Explore in 3D Color by confidence AlphaFold DB UniProt
The mean pLDDT of this model is 65.5 (low 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 | 18% |
| 70 to 90 | Confident: backbone generally right | 26% |
| 50 to 70 | Low: treat with caution | 26% |
| Below 50 | Very low: often disordered regions | 31% |
What pLDDT means and how to read it
A phosphoprotein adapter involved in the XPO1-mediated U snRNA export from the nucleus (PubMed:39011894). Bridge components required for U snRNA export, the cap binding complex (CBC)-bound snRNA on the one hand and the GTPase Ran in its active GTP-bound form together with the export receptor XPO1 on the other. Its phosphorylation in the nucleus is required for U snRNA export complex assembly and export, while its dephosphorylation in the cytoplasm causes export complex disassembly. It is recycled back to the nucleus via the importin alpha/beta heterodimeric import receptor. The directionality of nuclear export is thought to be conferred by an asymmetric distribution of the GTP- and…
Found in a U snRNA export complex with PHAX/RNUXA, NCBP1/CBP80, NCBP2/CBP20, RAN, XPO1 and m7G-capped RNA. Part of a precomplex with PHAX/RNUXA, NCBP1/CBP80, NCBP2/CBP20 and m7G-capped RNA. Interacts with NCBP1/CBP80 (By similarity). Found in a complex with snoRNA. Interacts with NCBP2/CBP20 (PubMed:26382858). Interacts with DDX39A; this interaction stimulates PHAX RNA binding activity…
Nucleus, nucleoplasm, Nucleus, Cajal body, Cytoplasm
Compare the prediction with experimentally determined structures of the same protein:
MolViewer loads the AlphaFold model straight from AlphaFold DB into your browser. Show it as a cartoon, color by pLDDT, measure distances and angles, and load a PDB structure next to it to compare.