DKK1 Antibody – Rabbit Polyclonal

This gene encodes a protein that is a member of the dickkopf family. It is a secreted protein with two cysteine rich regions and is involved in embryonic development through its inhibition of the WNT signaling pathway. Elevated levels of DKK1 in bone marrow plasma and peripheral blood is associated with the presence of osteolytic bone lesions in patients with multiple myeloma. [provided by RefSeq, Jul 2008]

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; Inhibitor; Secreted, signal peptide

Chromosomal Location of Human Ortholog: 10q11.2

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

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

Biological Process: negative regulation of skeletal muscle development; cellular morphogenesis during differentiation; negative regulation of Wnt receptor signaling pathway; response to retinoic acid; 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; mesoderm formation; negative regulation of mesodermal cell fate specification; hair follicle development; endoderm formation; forebrain development; regulation of endodermal cell fate specification; negative regulation of protein complex assembly; embryonic limb morphogenesis