Small ubiquitin-related modifier 2 (SUMO2) is a 103-residue protein from Arabidopsis thaliana. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q9FLP6.
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The mean pLDDT of this model is 78.0 (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 | 46% |
| 70 to 90 | Confident: backbone generally right | 26% |
| 50 to 70 | Low: treat with caution | 11% |
| Below 50 | Very low: often disordered regions | 18% |
What pLDDT means and how to read it
Ubiquitin-like protein which can be covalently attached to target lysines as a monomer. Does not seem to be involved in protein degradation and may function as an antagonist of ubiquitin in the degradation process. Required for the massive protein sumoylation in the nucleus induced by heat shock and controlled by SIZ1
Interacts with SAE2, SCE1, SIZ1 and MMS21 (By similarity). Interacts with HSFA2 (By similarity). Covalently attached to ABI5, FLD, GTE3, HSFA2 and ICE1 (By similarity)
Nucleus, Cytoplasm
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 8OI3 | X-ray | 1.5 Å | C/D=1-91 |
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