Transcription initiation factor TFIID subunit 8 (TAF8) is a 310-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q7Z7C8.
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The mean pLDDT of this model is 73.3 (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 | 33% |
| 70 to 90 | Confident: backbone generally right | 36% |
| 50 to 70 | Low: treat with caution | 9% |
| Below 50 | Very low: often disordered regions | 22% |
What pLDDT means and how to read it
The TFIID basal transcription factor complex plays a major role in the initiation of RNA polymerase II (Pol II)-dependent transcription (PubMed:33795473). TFIID recognizes and binds promoters with or without a TATA box via its subunit TBP, a TATA-box-binding protein, and promotes assembly of the pre-initiation complex (PIC) (PubMed:33795473). The TFIID complex consists of TBP and TBP-associated factors (TAFs), including TAF1, TAF2, TAF3, TAF4, TAF5, TAF6, TAF7, TAF8, TAF9, TAF10, TAF11, TAF12 and TAF13 (PubMed:33795473). The TFIID complex structure can be divided into 3 modules TFIID-A, TFIID-B, and TFIID-C (PubMed:33795473). TAF8 is involved in forming the TFIID-B module, together with…
Component of the TFIID basal transcription factor complex, composed of TATA-box-binding protein TBP, and a number of TBP-associated factors (TAFs), including TAF1, TAF2, TAF3, TAF4, TAF5, TAF6, TAF7, TAF8, TAF9, TAF10, TAF11, TAF12 and TAF13 (PubMed:33795473). Interacts with TBP, TAF1, TAF6, TAF10, TAF11 and TAF13 (PubMed:14580349, PubMed:15870280, PubMed:17375202). Component also of a small TAF…
Nucleus, Cytoplasm
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 4WV6 | X-ray | 1.75 Å | B/C=297-310 |
| 4WV4 | X-ray | 1.91 Å | B=25-120 |
| 7EGG | EM | 2.77 Å | H=1-310 |
| 7EGH | EM | 3.04 Å | H=1-310 |
| 7EGB | EM | 3.3 Å | H=1-310 |
| 7EG9 | EM | 3.7 Å | H=1-310 |
| 7EGC | EM | 3.9 Å | H=1-310 |
| 7ENA | EM | 4.07 Å | DH=1-310 |
| 7EGA | EM | 4.1 Å | H=1-310 |
| 7ENC | EM | 4.13 Å | DH=1-310 |
| 8GXS | EM | 4.16 Å | DH=1-310 |
| 6MZC | EM | 4.5 Å | K=1-310 |
| 7EDX | EM | 4.5 Å | H=1-310 |
| 8GXQ | EM | 5.04 Å | DH=1-310 |
| 8WAK | EM | 5.47 Å | H=1-310 |
| 8WAP | EM | 5.85 Å | H=1-310 |
| 8WAN | EM | 6.07 Å | H=1-310 |
| 8WAS | EM | 6.13 Å | H=1-310 |
| 7EG7 | EM | 6.2 Å | H=1-310 |
| 8WAQ | EM | 6.29 Å | H=1-310 |
Showing 20 of 31 experimental structures (best resolution first).
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