Recombinant Human sFRP-3 Protein

Newer Version Available: 7584-SF
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Carrier Free

Catalog # Availability Size / Price Qty
192-SF-010/CF

With Carrier

Catalog # Availability Size / Price Qty
192-SF-010
R&D Systems Recombinant Proteins and Enzymes
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Citations (5)
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Recombinant Human sFRP-3 Protein Summary

Product Specifications

Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<1.0 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its ability to inhibit proliferation in MC3T3‑E1 mouse preosteoblast cells. The ED50 for this effect is 1‑4 µg/mL.
Optimal concentrations should be determined by each laboratory for each application.
Source
Mouse myeloma cell line, NS0-derived human sFRP-3 protein
Ala33-Asn325, with a C-terminal 10-His tag
Accession #
N-terminal Sequence
Analysis
Ala33
Predicted Molecular Mass
35 kDa
SDS-PAGE
38 kDa, reducing conditions

Product Datasheets

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192-SF (with carrier)

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192-SF/CF (carrier free)

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

192-SF

Formulation Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
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.

192-SF/CF

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 100 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.
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.

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Background: sFRP-3

Secreted Frizzled Related Protein 3 (sFRP-3) was originally identified in bovine cartilage for its chondrogenic ability. Human, mouse, chick and Xenopus clones have also been isolated. SFRP-3 is often referred to as FRZB, other names include Fritz, Frzb1, and FRP-3. At the amino acid sequence level, sFRP-3 is highly conserved. The human protein shares 77% identity with Xenopus, 92% with mouse, and 94% with bovine proteins. Human sFRP-3 is strongly expressed in the developing appendicular skeleton, and cartilage of craniofacial bones. As determined by Northern blot of adult tissues, it is strongly detected in heart and placenta, as well as the brain, skeletal muscle, kidney and pancreas.

The N-terminal portion of the protein shows 50% amino acid identity to the corresponding region of the Drosophila frizzled gene product, a receptor for Wg/Wnt signals. The similarity of sFRP-3 with frizzled proteins is restricted to the N-terminal cysteine-rich domain (CRD) that contains at least ten cysteine residues with highly conserved spacing between them. SFRP-3 was subsequently shown to be a soluble antagonist of Wnt signals. It lacks all transmembrane domains of frizzled proteins but retains the ability to bind Wnts. Ectopic expression of sFRP-3 mRNA has been shown to interfere with the induction of secondary axes in Xenopus embryos injected with Xwnt-8 mRNA.

References
  1. Hoang, et al. (1996) J. Biol. Chem. 271:26131.
  2. Leyns, et al. (1997) Cell 88:747.
  3. Wang, et al. (1997) Cell 88:757.
  4. Mayr, et al. (1997) Mech. Dev. 63:109.
  5. Rattner, et al. (1997) PNAS 94:2859.
Long Name
Secreted Frizzled Related Protein 3
Entrez Gene IDs
2487 (Human); 20378 (Mouse)
Alternate Names
FIZ; FREOS1; Frezzled; Fritz; Frizzled-related protein 1; frizzled-related protein; FRP; FRP-3; FRZB; Frzb1; FRZB-1; FRZB1sFRP-3; FRZB-PEN; FZRB; hFIZ; secreted frizzled-related protein 3; sFRP3; sFRP-3; SFRP3frezzled; SRFP3frizzled homolog-related

Citations for Recombinant Human sFRP-3 Protein

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.

5 Citations: Showing 1 - 5
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  1. ECHO, the executable CHOndrocyte: A computational model to study articular chondrocytes in healthy and disease
    Authors: S Schivo, S Khurana, K Govindaraj, J Scholma, J Kerkhofs, L Zhong, X Huang, J van de Pol, R Langerak, AJ van Wijnen, L Geris, M Karperien, JN Post
    Cell. Signal., 2019;0(0):109471.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  2. Reduced skeletal muscle secreted frizzled-related protein 3 is associated with inflammation and insulin resistance
    Authors: AS Pachori, M Madan, YO Nunez Lope, F Yi, C Meyer, AA Seyhan
    Obesity (Silver Spring), 2017;0(0):.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  3. Widespread potential for growth-factor-driven resistance to anticancer kinase inhibitors.
    Authors: Wilson TR, Fridlyand J, Yan Y, Penuel E, Burton L, Chan E, Peng J, Lin E, Wang Y, Sosman J, Ribas A, Li J, Moffat J, Sutherlin DP, Koeppen H, Merchant M, Neve R, Settleman J
    Nature, 2012;487(7408):505-9.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  4. Methylation and loss of secreted frizzled-related protein 3 enhances melanoma cell migration and invasion.
    Authors: Ekstrom EJ, Sherwood V, Andersson T
    PLoS ONE, 2011;6(4):e18674.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  5. Production of Wnt inhibitors by myeloma cells: potential effects on canonical Wnt pathway in the bone microenvironment.
    Authors: Giuliani N, Morandi F, Tagliaferri S, Lazzaretti M, Donofrio G, Bonomini S, Sala R, Mangoni M, Rizzoli V
    Cancer Res., 2007;67(16):7665-74.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay

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