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Human FTLS / RSPO2 Protein (186 Leu/Pro, Fc Tag)

CRISTIN2

Catalog Number P13084-H02H
Organism Species Human
Host Human Cells
Synonyms CRISTIN2
Molecular Weight The secreted recombinant human RSPO2/Fc is a disulfide-linked homodimer. The reduced monomer comprises 425 amino acids and has a predicted molecular mass of 48.3 kDa. ?The apparent molecular mass of rh RSPO2/Fc monomer is approximately 50 kDa in SDS-PAGE under reducing conditions.
predicted N Gln 22
SDS-PAGE
Purity > 90 % as determined by SDS-PAGE
Protein Construction A DNA sequence encoding the human RSPO2 (Q6UXX9-1) N-teminal fragment (Met 1-Gly 205, 186 Leu/Pro) was fused with the Fc region of human IgG1 at the C-terminus.
Bio-activity Measured by its ability to induce activation of ß-catenin response in a Topflash Luciferase assay using HEK293T human embryonic kidney cells.
The ED50 for this effect is typically 10-60 ng/mL in the presence of 5 ng/mL recombinant mouse Wnt3a.
Research Area Signaling |Signal Transduction |Signaling Pathway |Representative pathway |Wnt Signaling pathway |Wnt Signaling Modulators |
Formulation Lyophilized from sterile PBS, pH 7.4
1. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
Background R-spondin-2, also known as RSPO2, synergizes with Wnt to activate beta-catenin. RSPO2 is secreted proteins that regulate beta-catenin signaling. Activator of the beta-catenin signaling cascade leads to TCF-dependent gene activation. Action both in the canonical Wnt / beta- catenin-dependent pathway, possibly via a direct interaction with Wnt proteins, and in a Wnt-independent beta catenin pathway through a receptor signaling pathway that may not use frizzled / LRP receptors. Probably also acts as a ligand for frizzled and LRP receptors. The encoding gene Rspo2 was identified as a novel common integration site for the mouse mammary tumor virus in viral induced mouse mammary tumors. Rspo2 and Rspo2 / Wnt1 tumors contained many spindle cells, consistent with an epithelial-mesenchymal transformation phenotype. When Rspo2 and Rspo2 / Wnt1 tumor cells were transferred into naive mice, they exhibited greater metastatic activity than cells derived from Wnt1 tumors.
Reference
  • Cadieu E, et al. (2009) Coat Variation in the Domestic Dog Is Governed by Variants in Three Genes. Science. 326: 150-153.
  • Kazanskaya O, et al. (2004) R-Spondin2 is a secreted activator of Wnt / beta-catenin signaling and is required for Xenopus myogenesis. Dev Cell. 7(4): 525-34.
  • Parker HG, et al. (2010) An insertion in the RSPO2 gene correlates with improper coat in the Portuguese water dog. J Hered. 101(5):612-7.