Leghemoglobin 3 (LB3) is a 144-residue protein from Glycine max. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P02238.
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The mean pLDDT of this model is 96.5 (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 | 94% |
| 70 to 90 | Confident: backbone generally right | 6% |
| 50 to 70 | Low: treat with caution | 0% |
| Below 50 | Very low: often disordered regions | 0% |
What pLDDT means and how to read it
Leghemoglobin that reversibly binds oxygen O(2) through a pentacoordinated heme iron (PubMed:29100196). In root nodules, facilitates the diffusion of oxygen to the bacteroids while preventing the bacterial nitrogenase from being inactivated by buffering dioxygen, nitric oxide and carbon monoxide, and promoting the formation of reactive oxygen species (ROS, e.g. H(2)O(2)) (PubMed:17540516, PubMed:22308405, PubMed:29701804, PubMed:32297921). This role is essential for symbiotic nitrogen fixation (SNF) (PubMed:17540516, PubMed:32297921)
Monomer
Cytoplasm, cytosol, Nucleus
Compare the prediction with experimentally determined structures of the same protein:
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