Name : Human DKK1 Protein

Product Source :
Recombinant Human DKK1 Protein is expressed from HEK293 with hFc tag at the C-terminus. It contains Thr32-His266.[Accession | O94907]

Molecular Weight :
The protein has a predicted MW of 52.54 kDa. Due to glycosylation, the protein migrates to 65-80 kDa based on Tris-Bis PAGE result.

Endotoxin Level :
Less than 1EU per μg by the LAL method.

Purity :
> 95% as determined by Tris-Bis PAGE> 95% as determined by HPLC

Formulation :
Lyophilized from 0.22 μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.

Reconstitution :
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.

Storage and Stability :
-20 to -80°C for 12 months as supplied from date of receipt. -80°C for 3-6 months after reconstitution. 2-8°C for 2-7 days after reconstitution. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.

Product Concentration :
Tris-Bis PAGE Human DKK1 on Tris-Bis PAGE under reduced condition. The purity is greater than 95%. SEC-HPLC The purity of Human DKK1 is greater than 95% as determined by SEC-HPLC. ELISA Data Immobilized Human DKK1, hFc Tag at 5μg/ml (100μl/well) on the plate. Dose response curve for Human LRP-5, mFc Tag with the EC50 of 1.69μg/ml determined by ELISA.

Background :
Dickkopf related protein 1 (Dkk-1) is the founding member of the Dickkopf family of proteins that includes Dkk-1, -2, -3, -4, and a related protein, Soggy. Dkk proteins are secreted proteins that contain two conserved cysteine-rich domains separated by a linker region. Dkk 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.

Synonyms :
Dickkopf-1; Dkk1; SK

References & Citations :
(1)Zhang W , Drake M T. Potential Role for Therapies Targeting DKK1, LRP5, and Serotonin in the Treatment of Osteoporosis[J]. Current Osteoporosis Reports, 2012, 10(1):93-100.

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