Photosystem II reaction center protein T (psbT) is a 32-residue protein from Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1). This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q8DIQ0.
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The mean pLDDT of this model is 95.0 (very high 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 | 88% |
| 70 to 90 | Confident: backbone generally right | 13% |
| 50 to 70 | Low: treat with caution | 0% |
| Below 50 | Very low: often disordered regions | 0% |
What pLDDT means and how to read it
Found at the monomer-monomer interface of the photosystem II (PS II) dimer, plays a role in assembly and dimerization of PSII. PSII is a light-driven water plastoquinone oxidoreductase, using light energy to abstract electrons from H(2)O, generating a proton gradient subsequently used for ATP formation
PSII is composed of 1 copy each of membrane proteins PsbA, PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT, PsbX, PsbY, PsbZ, Psb30/Ycf12, PsbO, CyanoQ (PsbQ), PsbU, PsbV and a large number of cofactors. It forms dimeric complexes (By similarity) (PubMed:14764885, PubMed:16355230, PubMed:19219048, PubMed:20558739, PubMed:21367867, PubMed:22665786, PubMed:23413188,…
Cellular thylakoid membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 9EVX | EM | 1.71 Å | T/t=1-32 |
| 7RF1 | X-ray | 1.89 Å | T/t=1-32 |
| 7YQ2 | X-ray | 1.9 Å | T/t=1-32 |
| 7YQ7 | X-ray | 1.9 Å | T/t=1-32 |
| 8F4C | X-ray | 2.0 Å | T/t=1-32 |
| 8F4I | X-ray | 2.0 Å | T/t=1-32 |
| 8F4J | X-ray | 2.0 Å | T/t=1-32 |
| 6W1T | X-ray | 2.01 Å | T/t=1-30 |
| 7RF6 | X-ray | 2.01 Å | T/t=1-32 |
| 8F4F | X-ray | 2.03 Å | T/t=1-32 |
| 8F4G | X-ray | 2.03 Å | T/t=1-32 |
| 6DHP | X-ray | 2.04 Å | T/t=1-30 |
| 6DHE | X-ray | 2.05 Å | T/t=1-30 |
| 6DHO | X-ray | 2.07 Å | T/t=1-30 |
| 6DHF | X-ray | 2.08 Å | T/t=1-30 |
| 6W1O | X-ray | 2.08 Å | T/t=1-30 |
| 7RF2 | X-ray | 2.08 Å | T/t=1-32 |
| 11YO | X-ray | 2.09 Å | T/t=1-32 |
| 6W1U | X-ray | 2.09 Å | T/t=1-32 |
| 6W1V | X-ray | 2.09 Å | T/t=1-32 |
Showing 20 of 64 experimental structures (best resolution first).
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