5cm4

Crystal structure of human Frizzled 4 Cysteine-Rich Domain (CRD)Crystal structure of human Frizzled 4 Cysteine-Rich Domain (CRD)

Structural highlights 5cm4 is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: Related: 5cl1 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Disease [FZD4_HUMAN] Retinopathy of prematurity;Familial exudative vitreoretinopathy;Persistent hyperplastic primary vitreous. The disease is caused by mutations affecting the gene represented in this entry. Function [FZD4_HUMAN] 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.

spinqualitylabelsall models 5cm4, resolution 2.40Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image