Transcription factor TFIIIB component B'' (BDP1) is a 594-residue protein from Saccharomyces cerevisiae (strain ATCC 204508 / S288c). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P46678.
Explore in 3D Color by confidence AlphaFold DB UniProt
The mean pLDDT of this model is 63.0 (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 | 10% |
| 70 to 90 | Confident: backbone generally right | 37% |
| 50 to 70 | Low: treat with caution | 16% |
| Below 50 | Very low: often disordered regions | 38% |
What pLDDT means and how to read it
General activator of RNA polymerase III transcription
TFIIIB comprises the TATA-binding protein (TBP), the B-related factor (BRF) and the B'' component (BDP1). Interacts with TFC4
Nucleus
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 6F40 | EM | 3.7 Å | W=1-594 |
| 7Q5B | EM | 3.98 Å | X=1-594 |
| 6EU0 | EM | 4.0 Å | V=1-594 |
| 6CNB | EM | 4.1 Å | S=1-594 |
| 6CNC | EM | 4.1 Å | S=1-594 |
| 6F44 | EM | 4.2 Å | W=1-594 |
| 6F41 | EM | 4.3 Å | W=1-594 |
| 6CNF | EM | 4.5 Å | S=1-594 |
| 6CND | EM | 4.8 Å | S=1-594 |
| 6F42 | EM | 5.5 Å | W=1-594 |
MolViewer loads the AlphaFold model straight from AlphaFold DB into your browser. Show it as a cartoon, color by pLDDT, measure distances and angles, and load a PDB structure next to it to compare.