Last update 01 Nov 2024

FZD2

Basic Info

Synonyms
frizzled (Drosophila) homolog 2, frizzled 2, seven transmembrane spanning receptor, frizzled class receptor 2
+ [7]
Introduction
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 (PubMed:25759469). 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. (Microbial infection) Acts as a receptor for C.difficile toxin TcdB in the colonic epithelium (PubMed:27680706, PubMed:29748286). TcdB occupies the binding site for Wnt-adducted palmitoleate in frizzled receptors and TcdB-binding prevents Wnt-binding and downstream Wnt signaling (PubMed:29748286).

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