Recombinant Human Frizzled-1 Fc Chimera Protein, CF Summary
Optimal concentrations should be determined by each laboratory for each application.
(Gln73 - His253)
Accession # Q9UP38
(Pro100 - Lys330)
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.
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.
|Formulation||Lyophilized from a 0.2 μm filtered solution in PBS.|
|Reconstitution||Reconstitute at 300 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.
Frizzled-1 is one of at least ten seven-transmembrane (7TM) glycoproteins of the Frizzled family of Wnt receptors (1 - 3). Frizzled proteins are thought to be G-protein-coupled (1, 4). Wnt engagement, with low density lipoprotein receptor-related proteins LRP-5 or LRP-6 acting as co-receptors, stabilizes beta -catenin and promotes gene transcription that is important in development and tissue maintenance (1). Frizzled-1 can also act as a Wnt antagonist, for example, when sequestered from LRP-5/6 by LRP-1 (5, 6). Human Frizzled-1 cDNA encodes 647 aa including a 69 aa signal peptide, an extracellular cysteine-rich domain (CRD, aa 111 - 230) that binds Wnts and is highly conserved among Frizzleds, a linker region, the 7TM region, and the C-terminal cytoplasmic domain (2). Most Frizzleds, including Frizzled-1, contain a C-terminal PDZ binding motif (1). Within aa 73 - 253, human Frizzled-1 shares 94%, 93%, 97% and 98% aa identity with mouse, rat, bovine and canine Frizzled-1, respectively. Frizzleds can form homodimers or selective hetero-oligomers with other family members, which can involve the TM regions and possibly the CRD (1, 7). Frizzled-1 shares high aa identity (~76%) with Frizzled-2 and -7, but may differ in expression and Wnt selectivity (3, 8). Specifically, Wnt-3a interaction with rat Frizzled-1, but not Frizzled-2, blocks toxicity of the Alzheimers A beta peptide on PC12 cells (8). In bone, Frizzled-1 may be part of a feedback mechanism to modulate the effects of BMP-2 on mesenchymal cells (6, 9). Frizzled-1 is also one of the purported Wnt10b receptors whose signaling inhibits adipocyte differentiation (10). It is widely expressed, with mRNA detection in adult heart, placenta, lung, kidney, pancreas, prostate, and ovary, and in fetal lung and kidney (2).
- Schulte, G. and B. Vitezslav (2007) Trends Pharmacol. Sci. 28:518.
- Sagara, N. et al. (1998) Biochem. Biophys. Res. Commun. 252:117.
- Gazit, A. et al. (1999) Oncogene 18:5959.
- Liu, T. et al. (1999) J. Biol. Chem. 274:33539.
- Zilberberg, A. et al. (2004) J. Biol. Chem. 279:17535.
- Roman-Roman, S. et al. (2004) J. Biol. Chem. 279:5725.
- Kaykas, A. et al. (2004) Nat. Cell Biol. 6:52.
- Chacon, M.A. et al. (2008) J. Cell. Physiol. 217:215.
- Yerges, L.M. et al. (2009) J. Bone Miner. Res. 24:87.
- Bennett, C.N. et al. (2002) J. Biol. Chem. 277:30998.
Citations for Recombinant Human Frizzled-1 Fc Chimera Protein, CF
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Citations: Showing 1 - 2
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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;0(0):e13977.
Sample Types: Recombinant Protein
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
Sample Types: Whole Cells
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