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Wnt glycoproteins play a role in diverse processes during embryonic patterning in metazoa through interaction with frizzled-type seven-transmembrane-domain receptors (Frz) to stabilize b-catenin. LDL-receptor-related protein 6 (LRP6), a Wnt co-receptor, is required for this interaction. Dikkopf (dkk) proteins are both positive and negative modulators of this signaling. (This definition may be outdated - see the DesignNote.)
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