Centromere DNA-binding protein complex CBF3 subunit B (CEP3) is a 608-residue protein from Saccharomyces cerevisiae (strain ATCC 204508 / S288c). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P40969.
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The mean pLDDT of this model is 88.1 (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 | 67% |
| 70 to 90 | Confident: backbone generally right | 22% |
| 50 to 70 | Low: treat with caution | 6% |
| Below 50 | Very low: often disordered regions | 5% |
What pLDDT means and how to read it
Acts as a component of the centromere DNA-binding protein complex CBF3, which is essential for chromosome segregation and movement of centromeres along microtubules. CBF3 is required for the recruitment of other kinetochore complexes to CEN DNA. It plays a role in the attachment of chromosomes to the spindle and binds selectively to a highly conserved DNA sequence called CDEIII, found in centromeres and in several promoters
Component of the CBF3 complex, which is formed of CBF3A/CBF2, CBF3B/CEP3, CBF3C/CTF13 and CBF3D
Nucleus, Chromosome, centromere
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 2VEQ | X-ray | 2.49 Å | A=45-608 |
| 2QUQ | X-ray | 2.8 Å | A=47-608 |
| 6GYU | EM | 3.0 Å | B=1-608, C=49-608 |
| 6F07 | EM | 3.6 Å | A/B=1-608 |
| 6GYP | EM | 3.6 Å | B=1-608, C=49-608 |
| 6FE8 | EM | 3.7 Å | A/B=47-608 |
| 8OW1 | EM | 3.7 Å | CE/ce=1-608 |
| 7K79 | EM | 4.0 Å | L/O=1-608 |
| 6GSA | EM | 4.2 Å | A/B=47-608 |
| 7K7G | EM | 4.2 Å | M=1-48 |
| 6GYS | EM | 4.4 Å | B/C/I/J=1-608 |
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