Home / Frizzled-4 / Recombinant Human Frizzled-4 Protein, CF

Recombinant Human Frizzled-4 Protein, CF

Catalog #: 5847-FZ
2 Citations Datasheet / COA / SDS
Catalog # Availability Size / Price Qty
5847-FZ-050
R&D Systems Recombinant Proteins and Enzymes
1 Image
Product Details
Citations (2)
FAQs
Supplemental Products
Reviews
Summary Product Datasheets Carrier Free Data Images Reconstitution Calculator Background Related Research Areas

Recombinant Human Frizzled-4 Protein, CF Summary

Product Specifications

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.
Activity
Measured by its binding ability in a functional ELISA. In a 100 µL reaction mixture containing biotinylated rmWnt-5a at 100 ng/mL and rhFrizzled-4/Fc Chimera dilutions at 0.1-2,000 ng/mL, the concentration of rhFrizzled-4/Fc Chimera that produces 50% of the optimal binding response is found to be approximately 15-60 ng/mL.
Optimal concentrations should be determined by each laboratory for each application.
Source
Mouse myeloma cell line, NS0-derived human Frizzled-4 protein
Human Frizzled-4
(Phe37-Glu180)
Accession # Q9ULV1		 IEGRMD Human IgG1
(Pro100-Lys330)
N-terminus C-terminus
Accession #
Q9ULV1
N-terminal Sequence
Analysis
Phe37
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
42.8 kDa (monomer)
SDS-PAGE
58-60 kDa, reducing conditions

Product Datasheets

You must select a language.

x

5847-FZ

Product Datasheet
COA
SDS

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.

5847-FZ

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 400 μg/mL in 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.

=
÷

Background: Frizzled-4

Frizzled-4, designated CD344, is a 7-transmembrane glycoprotein of the Frizzled family within the G-protein coupled receptor superfamily (1, 2). Frizzled proteins function as receptors for Wnt proteins and can activate canonical Wnt/beta-catenin signaling as well as planar cell polarity and calcium flux pathways (1). Frizzled-4 is particularly important in angiogenic Wnt pathway signaling (1, 5). Frizzleds contain a divergent N-terminal signal peptide, a highly conserved ~120 amino acid (aa) cysteine-rich domain (CRD), a variable length linker region, seven transmembrane domains, and a variable-length C-terminal tail (1). The human Frizzled-4 cDNA encodes 537 aa with a 36 aa signal sequence and a 186 aa N-terminal extracellular sequence (4). The portion expressed in this product includes aa 37-180, and shares 93%, 93%, 94%, 95% and 97% identity with the corresponding region of mouse, rat, bovine, canine and equine Frizzled-4, respectively. This portion competes for Wnt binding with endogenous receptors. A human 122 aa soluble form that diverges at aa 95 is proposed to be a positive regulator of Wnt signaling pathways (5). Frizzled-4 is unusual in binding a non-wnt ligand, Norrin, in addition to binding Wnt ligands (1, 3, 6). Norrin binds the Frizzled-4 CRD, activates Wnt signaling pathways and uses LRP5/6 as co-receptors (3, 6). Deletion of either Frizzled-4 or Norrin in mice results in a similar phenotype including malformation of vasculature in the retina, cerebellar degeneration, and loss of hair cells in the inner ear (1, 3, 7). In humans, blindness due to familial exudative vitreoretinopathy (FEVR) is associated with mutations producing loss of function of Frizzled-4 or Norrin, designated EVR1 and EVR2, respectively (1, 3, 8). Frizzled-4 expression has been found in many tissues, including mouse ovary, where it influences corpus luteum vasculogenesis and is necessary for fertility (9).

References
  1. Huang, H-C. and P.S. Klein (2004) Genome Biol. 5:234.
  2. Parmalee, N.L. and J. Kitajewski (2008) Curr. Drug Targets 9:558.
  3. Xu, Q. et al. (2004) Cell 116:883.
  4. Kirikoshi, H. et al. (1999) Biochem. Biophys. Res. Commun. 264:955.
  5. Sagara, N. et al. (2001) Biochem. Biophys. Res. Commun. 282:750.
  6. Smallwood, P.M. et al. (2007) J. Biol. Chem. 282:4057.
  7. Wang, Y. et al. (2001) J. Neurosci. 21:4761.
  8. Robitaille, J. et al. (2002) Nat. Genet. 32:326.
  9. Hsieh, M. et al. (2005) Biol. Reprod. 73:1135.
Entrez Gene IDs
8322 (Human); 14366 (Mouse)
Alternate Names
CD344 antigen; CD344; EVR1; exudative vitreoretinopathy 1; FEVR; frizzled (Drosophila) homolog 4; frizzled homolog 4 (Drosophila); Frizzled4; Frizzled-4; Fz-4; FZD4; FZD4S; FzE4; GPCR; hFz4; MGC34390; WNT receptor frizzled-4

Citations for Recombinant Human Frizzled-4 Protein, CF

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.

2 Citations: Showing 1 - 2
Filter your results:

Filter by:

  1. A Norrin/Wnt surrogate antibody stimulates endothelial cell barrier function and rescues retinopathy
    Authors: R Chidiac, M Abedin, G Macleod, A Yang, PE Thibeault, LL Blazer, JJ Adams, L Zhang, H Roehrich, HN Jo, S Seshagiri, SS Sidhu, HJ Junge, S Angers
    Embo Molecular Medicine, 2021-06-09;0(0):e13977.
    Species: Human
    Sample Types: Recombinant Protein
    Applications: Bioassay
  2. 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, 2012-07-26;487(7408):505-9.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay

FAQs

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

View all Proteins and Enzyme FAQs
Loading...

Reviews for Recombinant Human Frizzled-4 Protein, CF

There are currently no reviews for this product. Be the first to review Recombinant Human Frizzled-4 Protein, CF and earn rewards!

Have you used Recombinant Human Frizzled-4 Protein, CF?

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