Recombinant Mouse R-Spondin 1 Protein, CF

(12 citations)   
  • Purity
    >90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
  • Endotoxin Level
    <0.10 EU per 1 μg of the protein by the LAL method.
  • Activity
    Measured by its ability to synergize with Recombinant Mouse Wnt‑3a (Catalog # 1324-WN) to stabilize beta -catenin protein levels in HEK293T human embryonic kidney cells as assessed with Western blot. This affect is detected at doses as low as 100 ng/mL in the presence of 20 ng/mL recombinant mouse Wnt-3a. Measured by its ability to induce Topflash reporter activity in HEK293T human embryonic kidney cells. The typical ED50 is 50-200 ng/mL in the presence of 5 ng/mL recombinant mouse Wnt-3a.
  • Source
    E. coli-derived Ser21-Gly209, with an N-terminal Met
  • Accession #
  • N-terminal Sequence
  • Predicted Molecular Mass
    21 kDa
Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 250 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Data Images
1 μg/lane of Recombinant Mouse R-Spondin-1 was resolved with SDS-PAGE under reducing (R) conditions and visualized by silver staining, showing a single band at 24 kDa.
Recombinant Mouse R-Spondin 1 (Catalog # 3474-RS) induces activation of beta -catenin response in a Topflash Luciferase assay using HEK293T human embryonic kidney cells. The ED50 for this effect is typically 50‑200 ng/mL in the presence of 5 ng/mL of Recombinant Mouse Wnt‑3a (Catalog # 1324-WN).
Background: R-Spondin 1

R-Spondin 1 (RSPO1, Roof plate-specific Spondin 1), also known as cysteine-rich and single thrombospondin domain containing protein 3 (Cristin 3), is a 27 kDa secreted protein that belongs to the R-Spondin family (1, 2). R-Spondins share around 40% aa identity. All regulate Wnt/ beta -catenin signaling, but have distinct expression patterns (1-3). Like other R-spondins, R-Spondin 1 contains two adjacent cysteine-rich furin-like domains (amino acids (aa) 34-135) followed by a thrombospondin (TSP-1) motif (aa 147-207) and a region rich in basic residues (aa 211-263). Only the furin-like domains are needed for beta -catenin stabilization (2, 4). A putative nuclear localization signal at the C-terminus may allow some expression in the nucleus (5). R-Spondin 1 contains one potential N-glycosylation site. Over aa 21 - 209, mouse R-Spondin 1 shares 98%, 94%, 94%, 93%, 92% and 88% aa identity with rat, human, horse, cow, goat and dog RSPO-1, respectively. R-Spondin 1 is expressed in early development at the roof plate boundary and is thought to contribute to dorsal neural tube development (3, 5). In humans, rare disruptions of the R-Spondin 1 gene are associated with tendencies for XX sex reversal (phenotypic male) or hermaphroditism, indicating a role for R-Spondin 1 in gender-specific differentiation (6, 7). Disruption is also associated with palmoplantar keratosis (6, 7). Postnatally, R-Spondin 1 is expressed by neuroendocrine cells in the intestine, adrenal gland and pancreas, and by epithelia in kidney and prostate (8). Injection of recombinant R-Spondin 1 in mice causes activation of beta -catenin and proliferation of intestinal crypt epithelial cells, and ameliorates experimental colitis (8, 9). R-Spondin 1 appears to regulate Wnt/ beta -catenin by competing with the Wnt antagonist DKK-1 for binding to the Wnt co-receptor, Kremen (10). This competition reduces internalization of DKK-1/LRP-6/Kremen complexes (10). Reports differ on whether
R-Spondin 1 binds LRP-6 directly (10 - 12).

  • References:
    1. Lowther, W. et al. (2005) J. Virol. 79:10093.
    2. Kim, K.-A. et al. (2006) Cell Cycle 5:23.
    3. Nam, J.-S. et al. (2007) Gene Expr. Patterns 7:306.
    4. Kazanskaya, O. et al. (2004) Dev. Cell 7:525.
    5. Kamata, T. et al. (2004) Biochim. Biophys. Acta 1676:51.
    6. Tomaselli, S. et al. (2008) Hum. Mutat. 29:220.
    7. Parma, P. et al. (2006) Nat. Genet. 38:1304.
    8. Kim, K.-A. et al. (2005) Science 309:1256.
    9. Zhao, J. et al. (2007) Gastroenterology 132:1331.
    10. Binnerts, M.E. et al. (2007) Proc. Natl. Acad. Sci. USA 104:14700.
    11. Nam, J.-S. et al. (2006) J. Biol. Chem. 281:13247.
    12. Wei, Q. et al. (2007) J. Biol. Chem. 282:15903.
  • Long Name:
    Roof Plate-specific Spondin 1
  • Entrez Gene IDs:
    284654 (Human); 192199 (Mouse)
  • Alternate Names:
    Cristin 3; CRISTIN3; FLJ40906Roof plate-specific spondin-1; hRspo1; roof plate-specific spondin; RSPO; RSPO1; RSpondin 1; R-spondin homolog (Xenopus laevis); RSPONDIN; R-spondin1; R-spondin-1
Related Research Areas

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

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Sample Type
  1. Inducible in vivo genome editing with CRISPR-Cas9.
    Authors: Dow, Lukas E, Fisher, Jonathan, O'Rourke, Kevin P, Muley, Ashlesha, Kastenhuber, Edward R, Livshits, Geulah, Tschaharganeh, Darjus F, Socci, Nicholas, Lowe, Scott W
    Nat Biotechnol, 2015;33(4):390-4.
    Species: Mouse
    Sample Type: Tissue Homogenates
    Application: Bioassay
  2. Convergence of cMyc and beta-catenin on Tcf7l1 enables endoderm specification.
    Authors: Morrison G, Scognamiglio R, Trumpp A, Smith A
    EMBO J, 2015;35(3):356-68.
    Species: Mouse
    Sample Type: Whole Cells
    Application: Bioassay
  3. Selenoprotein P influences colitis-induced tumorigenesis by mediating stemness and oxidative damage.
    Authors: Barrett C, Reddy V, Short S, Motley A, Lintel M, Bradley A, Freeman T, Vallance J, Ning W, Parang B, Poindexter S, Fingleton B, Chen X, Washington M, Wilson K, Shroyer N, Hill K, Burk R, Williams C
    J Clin Invest, 2015;125(7):2646-60.
    Species: Mouse
    Sample Type: Whole Tissue
    Application: Bioassay
  4. R-spondin 1/dickkopf-1/beta-catenin machinery is involved in testicular embryonic angiogenesis.
    Authors: Caruso M, Ferranti F, Corano Scheri K, Dobrowolny G, Ciccarone F, Grammatico P, Catizone A, Ricci G
    PLoS ONE, 2015;10(4):e0124213.
    Species: Mouse
    Sample Type: Whole Tissue
    Application: Bioassay
  5. Directed Differentiation of Human Embryonic Stem Cells into Prostate Organoids In Vitro and its Perturbation by Low-Dose Bisphenol A Exposure.
    Authors: Calderon-Gierszal E, Prins G
    PLoS ONE, 2015;10(7):e0133238.
    Species: Human
    Sample Type: Whole Cells
    Application: Bioassay
  6. Small intestinal stem cell identity is maintained with functional Paneth cells in heterotopically grafted epithelium onto the colon.
    Authors: Fukuda M, Mizutani T, Mochizuki W, Matsumoto T, Nozaki K, Sakamaki Y, Ichinose S, Okada Y, Tanaka T, Watanabe M, Nakamura T
    Genes Dev, 2014;28(16):1752-7.
    Species: Mouse
    Sample Type: Whole Tissue
    Application: Bioassay
  7. Blockade of TLR3 protects mice from lethal radiation-induced gastrointestinal syndrome.
    Authors: Takemura N, Kawasaki T, Kunisawa J, Sato S, Lamichhane A, Kobiyama K, Aoshi T, Ito J, Mizuguchi K, Karuppuchamy T, Matsunaga K, Miyatake S, Mori N, Tsujimura T, Satoh T, Kumagai Y, Kawai T, Standley D, Ishii K, Kiyono H, Akira S, Uematsu S
    Nat Commun, 2014;5(0):3492.
    Species: Mouse
    Sample Type: Whole Tissue
    Application: Bioassay
  8. Luminal microbes promote monocyte-stem cell interactions across a healthy colonic epithelium.
    Authors: Skoczek D, Walczysko P, Horn N, Parris A, Clare S, Williams M, Sobolewski A
    J Immunol, 2014;193(1):439-51.
    Species: Mouse
    Sample Type: Whole Tissue
    Application: Bioassay
  9. Proinflammatory cytokine-induced tight junction remodeling through dynamic self-assembly of claudins.
    Authors: Capaldo C, Farkas A, Hilgarth R, Krug S, Wolf M, Benedik J, Fromm M, Koval M, Parkos C, Nusrat A
    Mol Biol Cell, 2014;25(18):2710-9.
    Species: Mouse
    Sample Type: Whole Cells
    Application: Bioassay
  10. The ErbB4 ligand neuregulin-4 protects against experimental necrotizing enterocolitis.
    Authors: McElroy S, Castle S, Bernard J, Almohazey D, Hunter C, Bell B, Al Alam D, Wang L, Ford H, Frey M
    Am J Pathol, 2014;184(10):2768-78.
    Species: Mouse
    Sample Type: Whole Cells
    Application: Bioassay
  11. Lrig1 controls intestinal stem-cell homeostasis by negative regulation of ErbB signalling.
    Authors: Wong, Vivian W, Stange, Daniel E, Page, Mahalia, Buczacki, Simon, Wabik, Agnieszk, Itami, Satoshi, van de Wetering, Marc, Poulsom, Richard, Wright, Nicholas, Trotter, Matthew, Watt, Fiona M, Winton, Doug J, Clevers, Hans, Jensen, Kim B
    Nat Cell Biol, 2012;14(4):401-8.
    Species: Mouse
    Sample Type: tissue
    Application: cell culture
  12. Human RSPO1/R-spondin1 is expressed during early ovary development and augments beta-catenin signaling.
    Authors: Tomaselli S, Megiorni F, Lin L, Mazzilli MC, Gerrelli D, Majore S, Grammatico P, Achermann JC
    PLoS ONE, 2011;6(1):e16366.
    Species: Human
    Sample Type: Whole Cells
    Application: Bioassay
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Recombinant Proteins
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Recombinant Mouse Wnt-3a Protein

BA, BA2 1324-WN 65
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Recombinant Mouse Wnt-3a Protein, CF

BA, BA2 1324-WN/CF 65
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