Ligand for members of the frizzled family of seven transmembrane receptors. Wnt-3 and Wnt-3a play distinct roles in cell-cell signaling during morphogenesis of the developing neural tube. Interacts with PORCN. Interacts with APCDD1 and WLS. Component of the Wnt-Fzd-LRP5-LRP6 signaling complex that contains a WNT protein, a FZD protein and LRP5 or LRP6. Interacts directly in the complex with LRP6. Moderately expressed in placenta and at low levels in adult lung, spleen, and prostate. Belongs to the Wnt family. Note: This description may include information from UniProtKB.
Biological Process: cell proliferation in forebrain; cell proliferation in midbrain; negative regulation of neurogenesis; neuron differentiation; palate development; positive regulation of cell proliferation; positive regulation of mesodermal cell fate specification; positive regulation of peptidyl-serine phosphorylation; positive regulation of protein amino acid phosphorylation; positive regulation of protein binding; positive regulation of receptor internalization; positive regulation of transcription from RNA polymerase II promoter; positive regulation of transcription, DNA-dependent; signalosome assembly; Wnt receptor signaling pathway; Wnt receptor signaling pathway through beta-catenin