Recombinant Human sFRP-5 Protein, CF

R&D Systems, part of Bio-Techne | Catalog # 6266-SF

R&D Systems, part of Bio-Techne
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6266-SF-050
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Key Product Details

Source

CHO

Accession #

Q5T4F7

Conjugate

Unconjugated

Applications

Bioactivity

View all sFRP-5 Proteins and Enzymes »

Product Specifications

Source

Chinese Hamster Ovary cell line, CHO-derived human sFRP-5 protein
Glu30-His317, with an N-terminal HA (YPYDVPDYA) tag

Purity

>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Tyr (HA), Trp37 & Ser46

Predicted Molecular Mass

33.8, 32.7 & 30.7 kDa

SDS-PAGE

30-40 kDa, reducing conditions

Activity

Measured by its ability to inhibit Topflash reporter activity in HEK293T human embryonic kidney cells.
The ED50 for this effect is 0.2-2 μg/mL in the presence of 750 ng/mL Recombinant Human Wnt‑3a (Catalog # 5036-WN).

Formulation, Preparation and Storage

6266-SF
Formulation Lyophilized from a 0.2 μm filtered solution in PBS and NaCl.
Reconstitution
Reconstitute at 100 μg/mL in PBS.

Reconstitution Buffer Available:
Size / Price
Qty
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.

Background: sFRP-5

Secreted Frizzled Related Protein-5 (sFRP-5), also known as SARP-3, belongs to a family of Wnt‑binding proteins with homology to the ligand‑binding domain of the Frizzled receptors. sFRPs are approximately 30-35 kDa in size and contain an N‑terminal Frizzled-like domain with 10 conserved cysteines and a Netrin-like C-terminal domain (1-3). Mature human sFRP-5 shares 96% aa sequence identity with mouse and rat sFRP‑2 (4). During embryonic development, sFRP-5 is expressed in the anterior visceral endoderm, neural tube, foregut epithelium, and proliferating and prehypertrophic chondrocytes (5-8). sFRP-5 activity is required for the development of foregut, liver, ventral pancreas, and somites (6, 7). In the adult, sFRP-5 is expressed in the retinal pigment epithelium and pancreas (4, 9). sFRP-5 binds and antagonizes the function of mammalian Wnt-5a and Wnt-11 as well as Xenopus Xwnt-8, resulting in an inhibition of both canonical and non-canonical Wnt signaling (7, 9, 10). sFRP-5 down‑regulation is common in breast and gastric cancer cells and is correlated with poor prognosis (11-13). It functions as a tumor suppressor by inhibiting epithelial‑mesenchymal transition, invasiveness, and tumorigenicity of ovarian cancer cells (14). sFRP-5 plays an important role in maintaining glucose handling and insulin sensitivity (10). It is secreted by adipocytes and is down‑regulated in mouse models of obesity and type 2 diabetes (10).

References

  1. Bovolenta, P. et al. (2008) J. Cell Sci. 121:737.
  2. van Amerongen, R. and R. Nusse (2009) Development 136:3205.
  3. Rattner, A. et al. (1997) Proc. Natl. Acad. Sci. 94:2859.
  4. Melkonyan, H.S. et al. (1997) Proc. Natl. Acad. Sci. 94:13636.
  5. Leaf, I. et al. (2006) Genesis 44:573.
  6. Satoh, W. et al. (2008) Genesis 46:92.
  7. Li, Y. et al. (2008) Genes Dev. 22:3050.
  8. Witte, F. et al. (2009) Gene Expr. Patterns 9:215.
  9. Chang, J. et al. (1999) Hum. Mol. Genet. 8:575.
  10. Ouchi, N. et al. (2010) Science 329:454.
  11. Veeck, J. et al. (2008) Carcinogenesis 29:991.
  12. Zhao, C. et al. (2009) BMC Cancer 9:224.
  13. Ho, C.M. et al. (2010) Eur. J. Clin. Invest. 40:310.
  14. Su, H.Y. et al. (2010) Int. J. Cancer 127:555.

Long Name

Secreted Frizzled Related Protein 5

Alternate Names

FRP1B, SARP3, sFRP5

Entrez Gene IDs

6425 (Human); 54612 (Mouse)

Gene Symbol

SFRP5

UniProt

Q5T4F7

Additional sFRP-5 Products

Product Documents for Recombinant Human sFRP-5 Protein, CF

Product Datasheets

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Product Specific Notices for Recombinant Human sFRP-5 Protein, CF

For research use only

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