Q8N7U6: EF-hand domain-containing family member B (EFHB)

EF-hand domain-containing family member B (EFHB) is a 833-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q8N7U6.

Gene
EFHB
Organism
Homo sapiens
Length
833 residues
Mean pLDDT
62.5
Model
AF-Q8N7U6-F1 v6
Model created
1 Aug 2025
PDB structures
2

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Model confidence (pLDDT)

The mean pLDDT of this model is 62.5 (low 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 bandMeaningShare of residues
Above 90Very high: backbone and side chains are usually accurate5%
70 to 90Confident: backbone generally right45%
50 to 70Low: treat with caution17%
Below 50Very low: often disordered regions33%

What pLDDT means and how to read it

Function

Microtubule inner protein (MIP) part of the dynein-decorated doublet microtubules (DMTs) in cilia axoneme, which is required for motile cilia beating (PubMed:36191189). Cytosolic sensor for calcium, modulates the interaction of STIM1 and ORAI1 upon store depletion and the activation of store-operated Ca(2+) entry (SOCE) and NFAT translocation from cytosol to nucleus (PubMed:30481768)

Subunit structure

Microtubule inner protein component of sperm flagellar doublet microtubules (By similarity). Interacts with STIM1 and ORAI1; the interactions take place upon Ca(2+)-store depletion and dissociate through a Ca(2+)-dependent mechanism. Interaction with STIM1 inhibits STIM1 interaction with SARAF (PubMed:30481768)

Subcellular location

Cytoplasm, cytoskeleton, cilium axoneme, Cytoplasm, cytoskeleton, flagellum axoneme, Cytoplasm

Experimental structures in the PDB

Compare the prediction with experimentally determined structures of the same protein:

PDB IDMethodResolutionChains and residues
7UNGEM3.6 Å1/2=1-833
8J07EM4.1 Å1A/1B/1C=1-833

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About this viewer

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