Kinesin-like protein KIF3B (Kif3b) is a 747-residue protein from Mus musculus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q61771.
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The mean pLDDT of this model is 75.1 (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 | 27% |
| 70 to 90 | Confident: backbone generally right | 44% |
| 50 to 70 | Low: treat with caution | 17% |
| Below 50 | Very low: often disordered regions | 13% |
What pLDDT means and how to read it
Microtubule-based molecular motor that transport intracellular cargos, such as vesicles, organelles and protein complexes. Uses ATP hydrolysis to generate force to bind and move along the microtubule (PubMed:7559760). Plays a role in cilia formation (PubMed:9865700). Involved in photoreceptor integrity and opsin trafficking in rod photoreceptors (By similarity). Transports vesicles containing N-methyl-D-aspartate (NMDA) receptor subunit GRIN2A into neuronal dendrites (PubMed:31746486)
Heterodimer of KIF3A and KIF3B (PubMed:7559760). KIF3A/KIF3B heterodimer interacts with KIFAP3 forming a heterotrimeric (KIF3A/KIF3B/KIFAP3) complex (PubMed:8710890). Interacts with the SMC3 subunit of the cohesin complex (By similarity). Interacts directly with IFT20 (PubMed:12821668). Interacts with FLCN (By similarity)
Cytoplasm, cytoskeleton, Cell projection, cilium, Cell projection, dendritic spine
Compare the prediction with experimentally determined structures of the same protein:
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