Low-density lipoprotein receptor-related protein 6 (LRP6)

Component of the Wnt-Fzd-LRP5-LRP6 complex that activates beta-catenin signaling through inducing aggregation of receptor- ligand complexes into ribosome-sized signalsomes. Cell-surface coreceptor of Wnt/beta-catenin signaling, which plays a pivotal role in bone formation.

The Wnt-induced Fzd/LRP6 coreceptor complex recruits DVL1 polymers to the plasma membrane which, in turn, recruits the AXIN1/GSK3B-complex to the cell surface promoting the formation of signalsomes and inhibiting AXIN1/GSK3- mediated phosphorylation and degradation of beta-catenin. Required for posterior patterning of the epiblast during gastrulation (By similarity).