DKK1 / Dkk-1 recombinant protein

Recombinant Human DKK1 / Dkk-1 Protein (His tag)

Cat. Num. AAA2546459

• Gene Names: DKK1; SK; DKK-1
• Purity: > 90 % as determined by SDS-PAGE
• Synonyms: DKK1 / Dkk-1; Recombinant Human DKK1 / Dkk-1 Protein (His tag); SK; DKK-1; DKK1 / Dkk-1 recombinant protein

• Host: Human Cells
• Purity/Purification: > 90 % as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile PBS, pH 7.4
• Sequence Length: 266

• Application Notes: The recombinant human DKK1 protein consists of 235 amino acids and has a calculated molecular mass of 25.8 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of rh DKK1 is approximately 45 kDa due to glycosylation.
• Predicted N Terminal: Thr 32 or Ser 35
• Endotoxin: < 1.0 EU per mug of the protein as determined by the LAL method
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -70 degree C

Related Product Information for DKK1 / Dkk-1 recombinant protein

Background: Dickkopf (DKK) family proteins, consisting of DKK-1, DKK-2, DKK-3 and DKK-4, function as secreted Wnt antagonists by inhibiting Wnt coreceptors LRP5/6. DKK-1, DKK-2, and DKK-4 also bind cell surface Kremen-1 or Kremen-2 and promote the internalization of LRP5/6. Dickkopf related protein 1 (DKK-1) was initially identified as an inducer of head formation in Xenopus embryos. DKK-1 protein modulates Wnt signaling pathway during embryonic development. Increased levels of DKK-1 are found in the majority of lung cancers, esophageal squamous cell carcinomas, and hormone-resistant breast cancers, while DKK-1 expression is decreased in malignant melanoma and colorectal cancers.

Description: A DNA sequence encoding the human DKK1 precursor (NP_036374.1) (Met 2-His 266) was expressed with a C-terminal polyhistidine tag.

NCBI and Uniprot Product Information

• NCBI GI #: 7110719
• NCBI GeneID: 22943
• NCBI Accession #: NP_036374.1
• NCBI GenBank Nucleotide #: NM_012242.2
• UniProt Accession #: O94907; B2RC19
• Molecular Weight: 28,672 Da
• NCBI Official Full Name: dickkopf-related protein 1
• NCBI Official Synonym Full Names: dickkopf WNT signaling pathway inhibitor 1
• NCBI Official Symbol: DKK1
• NCBI Official Synonym Symbols: SK; DKK-1
• NCBI Protein Information: dickkopf-related protein 1
• UniProt Protein Name: Dickkopf-related protein 1
• UniProt Gene Name: DKK1
• UniProt Synonym Gene Names: Dickkopf-1; Dkk-1; hDkk-1

NCBI Description

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]

Uniprot Description

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: Inhibitor; Secreted; Secreted, signal peptide

Chromosomal Location of Human Ortholog: 10q21.1

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

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

Biological Process: negative regulation of mesodermal cell fate specification; negative regulation of peptidyl-serine phosphorylation; negative regulation of protein binding; negative regulation of transcription from RNA polymerase II promoter; negative regulation of Wnt receptor signaling pathway; regulation of endodermal cell fate specification; regulation of receptor internalization