FZD6
Domain
Lys-Thr-X-X-X-Trp motif interacts with the PDZ domain of Dvl (Disheveled) family members and is involved in the activation of the Wnt/beta-catenin signaling pathway.
The FZ domain is involved in binding with Wnt ligands.
Function
Receptor for Wnt proteins. Most of frizzled receptors are coupled to the beta-catenin canonical signaling pathway, which leads to the activation of disheveled proteins, inhibition of GSK-3 kinase, nuclear accumulation of beta-catenin and activation of Wnt target genes. A second signaling pathway involving PKC and calcium fluxes has been seen for some family members, but it is not yet clear if it represents a distinct pathway or if it can be integrated in the canonical pathway, as PKC seems to be required for Wnt-mediated inactivation of GSK-3 kinase. Both pathways seem to involve interactions with G-proteins. May be involved in transduction and intercellular transmission of polarity information during tissue morphogenesis and/or in differentiated tissues. Together with FZD3, is involved in the neural tube closure and plays a role in the regulation of the establishment of planar cell polarity (PCP), particularly in the orientation of asymmetric bundles of stereocilia on the apical faces of a subset of auditory and vestibular sensory cells located in the inner ear (By similarity).
Involvement in disease
Nail disorder, non-syndromic congenital, 1
NDNC1
An autosomal recessive nail disorder characterized by a variable degree of onychauxis (thick nails), hyponychia, and onycholysis of all nails, with claw-shaped fingernails in some individuals. No other anomalies of ectodermal tissues, including hair, teeth, sweat glands, or skin, are noted, and individuals with dysplastic nails have normal hearing and normal psychomotor development.
None
The disease is caused by variants affecting the gene represented in this entry.
Rare non-synonymous variants in FZD6 may contribute to neural tube defects, congenital malformations of the central nervous system and adjacent structures related to defective neural tube closure during the first trimester of pregnancy.
Post-translational modifications
Ubiquitinated by ZNRF3, leading to its degradation by the proteasome.
Sequence Similarities
Belongs to the G-protein coupled receptor Fz/Smo family.
Tissue Specificity
Detected in adult heart, brain, placenta, lung, liver, skeletal muscle, kidney, pancreas, thymus, prostate, testis, ovary, small intestine and colon. In the fetus, expressed in brain, lung, liver and kidney.
Cellular localization
- Membrane
- Multi-pass membrane protein
- Cell membrane
- Multi-pass membrane protein
- Cell surface
- Apical cell membrane
- Multi-pass membrane protein
- Cytoplasmic vesicle membrane
- Multi-pass membrane protein
- Endoplasmic reticulum membrane
- Multi-pass membrane protein
- Colocalizes with FZD3 at the apical face of cells (By similarity). Localizes to the endoplasmic reticulum membrane in the presence of LMBR1L (By similarity).
Alternative names
Frizzled-6, Fz-6, hFz6, FZD6