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The R-Spondin (Rspo) proteins belong to the Rspo family of Wnt modulators. Currently, the family consists of four structurally-related, secreted ligands (Rspo 1-4), all containing furin-like and thrombospondin structural domains. The Rspo proteins can interact with the Frizzled/LRP6 receptor complex in a manner that causes the stabilization, and resulting accumulation, of the intracellular signaling protein, β-catenin. This activity effectively activates and increases the subsequent nuclear signaling of β-catenin. R-Spondin can also bind to the previously discovered G-protein coupled receptors, LGR-4 and LGR-5. Rspo/β-catenin signaling can act as an inducer of the transformed phenotype, and can also regulate the proliferation and differentiation of certain stem cell populations.? Recombinant Human R-Spondin-2 is a 24.4 kDa protein consisting of 212 amino acid residues.? Due to glycosylation, R-Spondin-2 migrates at an apparent molecular weight of approximately 30.0 kDa by SDS PAGE analysis under reducing conditions.

Source: CHO cells

Synonyms: Roof plate-specific spondin-2, RSPO2

AA Sequence: ASYVSNPICK GCLSCSKDNG CSRCQQKLFF FLRREGMRQY GECLHSCPSG YYGHRAPDMN RCARCRIENC DSCFSKDFCT KCKVGFYLHR GRCFDECPDG FAPLEETMEC VEGCEVGHWS EWGTCSRNNR TCGFKWGLET RTRQIVKKPV KDTILCPTIA ESRRCKMTMR HCPGGKRTPK AKEKRNKKKK RKLIERAQEQ HSVFLATDRA NQ

Purity: ≥ 95% by SDS-PAGE gel and HPLC analyses.

Biological Activity: R-Spondin-2 enhances BMP-2-mediated differentiation of MC3T3-E1 cells. The expected ED₅₀ for this effect is 0.8 – 2.0 μg/ml.