Aliases for FZD4 Gene
External Ids for FZD4 Gene
Previous HGNC Symbols for FZD4 Gene
Previous GeneCards Identifiers for FZD4 Gene
This gene is a member of the frizzled gene family. Members of this family encode seven-transmembrane domain proteins that are receptors for the Wingless type MMTV integration site family of signaling proteins. Most frizzled receptors are coupled to the beta-catenin canonical signaling pathway. This protein may play a role as a positive regulator of the Wingless type MMTV integration site signaling pathway. A transcript variant retaining intronic sequence and encoding a shorter isoform has been described, however, its expression is not supported by other experimental evidence. [provided by RefSeq, Jul 2008]
GeneCards Summary for FZD4 Gene
FZD4 (Frizzled Class Receptor 4) is a Protein Coding gene. Diseases associated with FZD4 include Exudative Vitreoretinopathy 1 and Exudative Vitreoretinopathy. Among its related pathways are Presynaptic function of Kainate receptors and Reelin Pathway (Cajal-Retzius cells). Gene Ontology (GO) annotations related to this gene include G-protein coupled receptor activity and protein heterodimerization activity. An important paralog of this gene is FZD10.
UniProtKB/Swiss-Prot for FZD4 Gene
Receptor for Wnt proteins. Most of frizzled receptors are coupled to the beta-catenin (CTNNB1) canonical signaling pathway, which leads to the activation of disheveled proteins, inhibition of GSK-3 kinase, nuclear accumulation of beta-catenin (CTNNB1) and activation of Wnt target genes. Plays a critical role in retinal vascularization by acting as a receptor for Wnt proteins and norrin (NDP). In retina, it can be both activated by Wnt protein-binding, but also by a Wnt-independent signaling via binding of norrin (NDP), promoting in both cases beta-catenin (CTNNB1) accumulation and stimulation of LEF/TCF-mediated transcriptional programs. 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.