Home / R-Spondin 1 / Human R-Spondin 1 Antibody

Human R-Spondin 1 Antibody

Catalog #: AF4645
1 Citation Datasheet / COA / SDS
Catalog # Availability Size / Price Qty
AF4645
AF4645-SP
Product Details
Citations (1)
FAQs
Supplemental Products
Reviews
Summary Preparation and Storage Reconstitution Calculator Background Product Datasheets Related Research Areas

Human R-Spondin 1 Antibody Summary

Species Reactivity
Human
Specificity
Detects human R-Spondin 1 in direct ELISAs. In direct ELISAs, approximately 6% cross-reactivity with recombinant mouse R-Spondin 1 is observed and less than 1% cross-reactivity with recombinant human (rh) R-Spondin 2, rhR-Spondin 3, and rhR-Spondin 4 is observed.
Source
Polyclonal Sheep IgG
Purification
Antigen Affinity-purified
Immunogen
Chinese hamster ovary cell line CHO-derived human R-Spondin 1
Arg31-Ala263
Accession # Q2MKA7
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Endotoxin Level
<0.10 EU per 1 μg of the antibody by the LAL method.
Label
Unconjugated

Applications

Recommended Concentration
Sample
Neutralization
Measured by its ability to neutralize R‑Spondin 1-induced activation of beta ‑Catenin response in the HEK293T human embryonic kidney cell line in a Topflash Luciferase assay. The Neutralization Dose (ND50) is typically 3-12 µg/mL in the presence of 100 ng/mL Recombinant Human R‑Spondin 1 and 5 ng/mL Recombinant Mouse Wnt‑3a.

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

=
÷

Preparation and Storage

Reconstitution
Sterile PBS to a final concentration of 0.2 mg/mL.
Loading...
Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store 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.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

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 shares ~40% amino acid (aa) identity with three otherR-Spondin family members (1, 2). All R-Spondins 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 (aa 34‑135) with one potential N‑glycosylation site, 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). Potential isoforms of 200 and 236 aa have an alternate, shorter N‑terminus or are missing aa 146‑208, respectively (6). Over aa 21‑263, human R-Spondin 1 shares 89%, 87%, 92%, 91%, 91% and 89% aa identity with mouse, rat, equine, canine, caprine and bovine R-Spondin 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 (7, 8). Disruption is also associated with palmoplantar keratosis (7, 8). Postnatally, R-Spondin 1 is expressed by neuroendocrine cells in the intestine, adrenal gland and pancreas, and by epithelia in kidney and prostate (9). Injection of recombinant R-Spondin 1 in mice causes activation of beta -catenin and proliferation of intestinal crypt epithelial cells, and ameliorates experimental colitis (9, 10). R-Spondin 1 regulates Wnt/ beta -catenin by competing with the Wnt antagonist DKK-1 for binding to the Wnt co-receptors, Kremen and LRP-6, reducing their DKK-1-mediated internalization (11). Reports differ on whether R-Spondin 1 binds LRP-6 directly (11‑13).

References
  1. Chen, J-Z. et al. (2002) Mol. Biol. Rep. 29:287.
  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. Entrez accession # EAX07331, ABA54598.
  7. Tomaselli, S. et al. (2008) Hum. Mutat. 29:220.
  8. Parma, P. et al. (2006) Nat. Genet. 38:1304.
  9. Kim, K.-A. et al. (2005) Science 309:1256.
  10. Zhao, J. et al. (2007) Gastroenterology 132:1331.
  11. Binnerts, M.E. et al. (2007) Proc. Natl. Acad. Sci. USA 104:14700.
  12. Nam, J.-S. et al. (2006) J. Biol. Chem. 281:13247.
  13. Wei, Q. et al. (2007) J. Biol. Chem. 282:15903.
Long Name
Roof Plate-specific Spondin 1
Entrez Gene IDs
284654 (Human); 192199 (Mouse); 102122369 (Cynomolgus Monkey)
Alternate Names
Cristin 3; CRISTIN3; FLJ40906Roof plate-specific spondin-1; HRspo1; roof plate-specific spondin; RSPO; RSPO1; RSpondin 1; R-Spondin 1; R-spondin homolog (Xenopus laevis); RSPONDIN; R-spondin1; R-spondin-1

Product Datasheets

You must select a language.

x
Product Datasheet
COA
SDS

Citation for Human R-Spondin 1 Antibody

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.

1 Citation: Showing 1 - 1

  1. R-Spondin1/LGR5 Activates TGF? Signaling and Suppresses Colon Cancer Metastasis
    Authors: X Zhou, L Geng, D Wang, H Yi, G Talmon, J Wang
    Cancer Res., 2017-09-22;0(0):.
    Species: Human
    Sample Types: Whole Cells
    Applications: Neutralization

FAQs

No product specific FAQs exist for this product, however you may

View all Antibody FAQs
Loading...

Reviews for Human R-Spondin 1 Antibody

There are currently no reviews for this product. Be the first to review Human R-Spondin 1 Antibody and earn rewards!

Have you used Human R-Spondin 1 Antibody?

Submit a review and receive an Amazon gift card.

$25/€18/£15/$25CAN/¥75 Yuan/¥2500 Yen for a review with an image

$10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen for a review without an image

Submit a Review