Cell division protein FtsY homolog, chloroplastic (CPFTSY) is a 366-residue protein from Arabidopsis thaliana. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: O80842.
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The mean pLDDT of this model is 87.1 (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 | 77% |
| 70 to 90 | Confident: backbone generally right | 8% |
| 50 to 70 | Low: treat with caution | 4% |
| Below 50 | Very low: often disordered regions | 12% |
What pLDDT means and how to read it
Signal recognition particle receptor protein. Binds GTP specifically. The GTPase activity is inhibited by the N-terminus of the protein until binding to the thylakoid membrane. Activates the GTPase activity of FFC/cpSRP54 when bound to the cpSRP complex. Required for light-harvesting chlorophyll a/b-binding protein (LHCP) integration into thylakoids. Might be also functionally linked to the Sec translocation machinery
Monomer. Interacts with FFC/cpSRP54, a component of the cpSRP complex, composed of a FFC/cpSRP54 monomer and a CAO/cpSRP43 dimer. The complex with FFC/cpSRP54 is formed when both proteins are bound with GTP
Plastid, chloroplast stroma, Plastid, chloroplast thylakoid membrane
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 3B9Q | X-ray | 1.75 Å | A=65-366 |
| 8RIX | X-ray | 1.99 Å | A=65-366 |
| 2OG2 | X-ray | 2.0 Å | A=41-366 |
| 5L3R | X-ray | 2.5 Å | B/D=80-366 |
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