Protein PHOSPHATE STARVATION RESPONSE 2 (PHR2) is a 426-residue protein from Oryza sativa subsp. japonica. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q6Z156.
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The mean pLDDT of this model is 57.1 (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 | 20% |
| 70 to 90 | Confident: backbone generally right | 3% |
| 50 to 70 | Low: treat with caution | 19% |
| Below 50 | Very low: often disordered regions | 58% |
What pLDDT means and how to read it
Transcription factor involved in phosphate starvation signaling (PubMed:18263782, PubMed:26082401). Binds to P1BS, an imperfect palindromic sequence 5'-GNATATNC-3', to promote the expression of inorganic phosphate (Pi) starvation-responsive genes (PubMed:25657119, PubMed:26082401). Functionally redundant with PHR1 and PHR3 in regulating Pi starvation response and Pi homeostasis (PubMed:26082401). Involved in both systematic and local Pi-signaling pathways (PubMed:19704822). Regulates several Pi transporters (PubMed:18263782). Regulates the expression of PT2 (PubMed:20149131). Directly up-regulates SPX1 and SPX2 expression, but PHR2 binding to DNA is repressed redundantly by SPX1 and SPX2…
Interacts (via C-terminus) with SPX4 (via N-terminus) in the presence of inositol polyphosphate (PubMed:24692424, PubMed:27080106). Interacts (via C-terminus) with SPX1 and SPX2 (via SPX domain) (PubMed:25271318, PubMed:35640569). Interacts with RLI1 isoform RLI1b in the nucleus (PubMed:35640569)
Nucleus, Cytoplasm
Compare the prediction with experimentally determined structures of the same protein:
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