Coatomer subunit beta' (SEC27) is a 889-residue protein from Saccharomyces cerevisiae (strain ATCC 204508 / S288c). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P41811.
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The mean pLDDT of this model is 88.4 (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 | 78% |
| 70 to 90 | Confident: backbone generally right | 13% |
| 50 to 70 | Low: treat with caution | 1% |
| Below 50 | Very low: often disordered regions | 8% |
What pLDDT means and how to read it
The coatomer is a cytosolic protein complex that binds to dilysine motifs and reversibly associates with Golgi non-clathrin-coated vesicles, which further mediate biosynthetic protein transport from the ER, via the Golgi up to the trans Golgi network. Coatomer complex is required for budding from Golgi membranes, and is essential for the retrograde Golgi-to-ER transport of dilysine-tagged proteins
Oligomeric complex that consists of at least the alpha, beta, beta', gamma, delta, epsilon and zeta subunits. Interacts with the ESCRT-0 subunit VPS27
Cytoplasm, Golgi apparatus membrane, Cytoplasmic vesicle, COPI-coated vesicle membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 8EWX | X-ray | 1.24 Å | A/B=1-301 |
| 8F0E | X-ray | 1.31 Å | A/B/C/D=1-301 |
| 8HQV | X-ray | 1.4 Å | A=1-301 |
| 8HQW | X-ray | 1.41 Å | A=1-301 |
| 4J73 | X-ray | 1.44 Å | A=1-301 |
| 8ENS | X-ray | 1.45 Å | A=1-301 |
| 8ENW | X-ray | 1.45 Å | A/B=1-301 |
| 4J82 | X-ray | 1.46 Å | A/B=1-301 |
| 4J84 | X-ray | 1.47 Å | A/B=1-301 |
| 4J78 | X-ray | 1.48 Å | A=1-301 |
| 4J86 | X-ray | 1.48 Å | A/B=1-301 |
| 8HQX | X-ray | 1.54 Å | A=1-301 |
| 4J79 | X-ray | 1.56 Å | A=1-301 |
| 4J81 | X-ray | 1.74 Å | A/B=1-301 |
| 4J77 | X-ray | 1.76 Å | A/B=1-301 |
| 2YNN | X-ray | 1.78 Å | A=1-304 |
| 2YNO | X-ray | 1.8 Å | A/B=1-304 |
| 8ENX | X-ray | 1.8 Å | A/B=1-301 |
| 8HQT | X-ray | 1.8 Å | A=1-301 |
| 8R8B | X-ray | 1.81 Å | AAA/BBB/CCC/DDD/EEE/FFF/GGG/HHH/III/JJJ/KKK/LLL/MMM/NNN/OOO/PPP/QQQ/RRR/SSS/TTT/UUU/VVV/WWW/XXX=1-304 |
Showing 20 of 22 experimental structures (best resolution first).
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