Cell division control protein 4 (CDC4) is a 779-residue protein from Saccharomyces cerevisiae (strain ATCC 204508 / S288c). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P07834.
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The mean pLDDT of this model is 72.9 (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 | 58% |
| 70 to 90 | Confident: backbone generally right | 6% |
| 50 to 70 | Low: treat with caution | 3% |
| Below 50 | Very low: often disordered regions | 33% |
What pLDDT means and how to read it
Substrate recognition component of a SCF (SKP1-CUL1-F-box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Recognizes and binds to phosphorylated target proteins. Directs ubiquitination of the phosphorylated CDK inhibitor SIC1. Involved in the degradation of CDC6 together with CDC34/UBC3 and CDC53, and in restricting the degradation of FAR1 to the nucleus. Is essential for initiation of DNA replication and separation of the spindle pole bodies to form the poles of the mitotic spindle. It also plays a role in bud development, fusion of zygotic nuclei after conjugation and various aspects of sporulation.…
Interacts with DCD53 and SKP1. Component of the SCF(CDC4) complex containing CDC53, SKP1, RBX1 and CDC4. CDC34. Interacts with CDC6 and CIC1. Interacts with SIC1; the interaction involves a SIC1 double phosphorylated motif (degron). Homodimerizes; the dimerization increases SIC1 ubiquitination in vitro
Nucleus
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 3V7D | X-ray | 2.31 Å | B/D=263-744 |
| 3MKS | X-ray | 2.6 Å | B/D=263-744 |
| 2P63 | X-ray | 2.67 Å | A/B/C/D=222-273 |
| 1NEX | X-ray | 2.7 Å | B/D=263-744 |
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