Antagonizes canonical Wnt signaling by inhibiting LRP5/6 interaction with Wnt and by forming a ternary complex with the transmembrane protein KREMEN that promotes internalization of LRP5/6. DKKs play an important role in vertebrate development, where they locally inhibit Wnt regulated processes such as antero- posterior axial patterning, limb development, somitogenesis and eye formation. In the adult, Dkks are implicated in bone formation and bone disease, cancer and Alzheimer disease. Interacts with LRP5 and LRP6. Expressed in heart, brain, skeletal muscle and lung. Belongs to the dickkopf family. Note: This description may include information from UniProtKB.
Protein type: Secreted, signal peptide; Inhibitor protein; Secreted
Cellular Component: extracellular space
Biological Process: Wnt receptor signaling pathway; multicellular organismal development
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.