Recombinant Cynomolgus Monkey IL-4R alpha Fc Protein, CF New

Catalog #: 11532-4R Datasheet / COA / SDS

Fc Chimera

Catalog #	Availability	Size / Price	Qty
11532-4R-050

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Product Details

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Summary Product Datasheets Carrier Free Data Images Reconstitution Calculator Background Related Research Areas

Recombinant Cynomolgus Monkey IL-4R alpha Fc Protein, CF Summary

Product Specifications

Endotoxin Level

<0.100 EU per 1 µg of the protein by the LAL method.

Activity

Measured by its ability to inhibit IL-4-dependent proliferation of TF‑1 human erythroleukemic cells. Kitamura, T. et al. (1989) J. Cell Physiol. 140:323.
The ED₅₀ for this effect is 9.00-90.0 ng/mL.

Accession #

XP_005591574.2

N-terminal Sequence
Analysis

Met26

Structure / Form

Disulfide-linked homodimer

Predicted Molecular Mass

50 kDa

SDS-PAGE

70-79 kDa, under reducing conditions.

Product Datasheets

11532-4R

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.

11532-4R

Formulation	Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitution	Reconstitute at 500 μg/mL in PBS.
Shipping	The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage:	Store the unopened product at -20 to -70 °C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Do not use past expiration date.

Scientific Data

Bioactivity

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Measured by its ability to inhibit IL-4-dependent proliferation of TF-1 human erythroleukemic cells. The ED₅₀ for this effect is 9.00‑90.0 ng/mL.

SDS-PAGE

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2 μg/lane of Recombinant Cynomolgus Monkey IL-4R alpha Fc Chimera Protein (Catalog # 11532-4R) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 70-79 kDa and 140-160 kDa, respectively.

Reconstitution Calculator

Background: IL-4R alpha

Interleukin 4 Receptor alpha (IL-4 Ra), also known as CD124 and BSF receptor, is a widely expressed 140 kDa transmembrane glycoprotein in the class I cytokine receptor family. IL-4 Ra plays an important role in Th2-biased immune responses, alternative macrophage activation, mucosal immunity, allergic inflammation, tumor progression, and atherogenesis (1-5). Mature human IL-4 Ra consists of a 207 amino acid (aa) extracellular domain (ECD) that contains a cytokine binding region and one fibronectin type III domain, a 24 aa transmembrane segment, and a 569 aa cytoplasmic domain that contains one Box 1 motif and one ITIM motif (6, 7). Within the ECD, cynomolgus monkey IL-4 Ra shares 91% aa sequence identity with human IL-4 Ra. Soluble forms of IL-4 Ra, generated by alternate splicing or proteolysis, retain ligand binding properties and inhibit IL-4 bioactivity (8-11). IL-4 Ra is a component of two distinct receptor complexes and shows species selectivity between human and mouse (6). It can associate with the common gamma chain ( gamma c) to form the IL-4 responsive type I receptor in which gamma c increases the affinity for IL-4 and enables signaling (12, 13). It can alternatively associate with IL-13 Ra1 to form the type II receptor which is responsive to both IL-4 and IL-13 (14, 15). The use of shared receptor components contributes to the overlapping biological effects of IL-4 and IL-13 as well as other cytokines that utilize gamma c (i.e. IL-2, IL-7, IL-9, IL-15, and IL-21) (16, 17).

References

Wills-Karp, M. and F.D. Finkelman (2008) Sci. Signal. 1:pe55.
Gordon, S. and F.O. Martinez (2010) Immunity 32:593.
Kuperman, D.A. and R.P. Schleimer (2008) Curr. Mol. Med. 8:384.
Li, Z. et al. (2009) Cell. Mol. Immunol. 6:415.
Lee, Y.W. et al. (2010) Biomol. Ther. 18:135.
Idzerda, R.L. et al. (1990) J. Exp. Med. 171:861.
Galizzi, J.P. et al. (1990) Int. Immunol. 2:669.
Kruse, S. et al. (1999) Int. Immunol. 11:1965.
Blum, H. et al. (1996) J. Immunol. 157:1846.
Jung, T. et al. (1999) Int. Arch. Allergy Immunol. 119:23.
Mosley, B. et al. (1989) Cell 59:335.
Kondo, M. et al. (1993) Science 262:1874.
Russell, S.M. et al. (1993) Science 262:1880.
Hilton, D.J. et al. (1996) Proc. Natl. Acad. Sci. 93:497.
Aman, M.J. et al. (1996) J. Biol. Chem. 271:29265.
Ramalingam, T.R. et al. (2008) Nat. Immunol. 9:25.
Overwijk, W.W. and K.S. Schluns (2009) Clin. Immunol. 132:153.

Long Name

Interleukin 4 Receptor alpha

Entrez Gene IDs

3566 (Human); 16190 (Mouse); 102133649 (Cynomolgus Monkey)

Alternate Names

CD124 antigen; CD124; IL-4 R alpha; IL-4 receptor subunit alpha; IL4R alpha; IL-4R alpha; IL-4R subunit alpha; IL4R; IL-4Ra; IL4RACD124; IL-4R-alpha; interleukin 4 receptor; interleukin-4 receptor alpha chain; interleukin-4 receptor subunit alpha