DKK1 Antibody – Rabbit Polyclonal

This gene encodes a member of the dickkopf family of proteins. Members of this family are secreted proteins characterized by two cysteine-rich domains that mediate protein-protein interactions. The encoded protein binds to the LRP6 co-receptor and inhibits beta-catenin-dependent Wnt signaling. This gene plays a role in embryonic development and may be important in bone formation in adults. Elevated expression of this gene has been observed in numerous human cancers and this protein may promote proliferation, invasion and growth in cancer cell lines. [provided by RefSeq, Sep 2017]

DKK1: 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 LRP6. Interacts (via the C-termianl Cys- rich domain) with LRP5 (via beta-propeller regions 3 and 4); the interaction, enhanced by MESD and or KREMEN, antagonizes Wnt- mediated signaling. Placenta. Belongs to the dickkopf family.

Protein type: Secreted; Secreted, signal peptide; Inhibitor

Chromosomal Location of Human Ortholog: 10q11.2

Cellular Component: extracellular space; early endosome membrane; extracellular region; plasma membrane

Molecular Function: protein binding; receptor antagonist activity; signal transducer activity; growth factor activity; low-density lipoprotein receptor binding

Biological Process: cellular morphogenesis during differentiation; negative regulation of skeletal muscle development; response to retinoic acid; negative regulation of Wnt receptor signaling pathway; regulation of receptor internalization; negative regulation of peptidyl-serine phosphorylation; negative regulation of transcription from RNA polymerase II promoter; negative regulation of BMP signaling pathway; negative regulation of mesodermal cell fate specification; mesoderm formation; hair follicle development; endoderm formation; forebrain development; regulation of endodermal cell fate specification; negative regulation of protein complex assembly; embryonic limb morphogenesis