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DKK1

Domain

The C-terminal cysteine-rich domain mediates interaction with LRP5 and LRP6.

Function

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 (PubMed:22000856). 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 (PubMed:17143291). Inhibits the pro-apoptotic function of KREMEN1 in a Wnt-independent manner, and has anti-apoptotic activity (By similarity).

Sequence similarities

Belongs to the dickkopf family.

Tissue specificity

Placenta.

Cellular localization

  • Secreted

Alternative names

  • Dickkopf-related protein 1
  • Dickkopf-1
  • Dkk-1
  • hDkk-1
  • SK
  • DKK1
  • UNQ492/PRO1008

Target type

Proteins

Primary research area

Oncology

Molecular weight

28672Da