Recombinant Human IL-31RA Protein, CF

Catalog # Availability Size / Price Qty
2769-IL-050
R&D Systems Recombinant Proteins and Enzymes
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Recombinant Human IL-31RA Protein, CF Summary

Product Specifications

Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its ability to bind rhIL-31 in a functional ELISA with an estimated KD < 4 nM.
Source
Mouse myeloma cell line, NS0-derived human IL-31 RA protein
Ala20-Ser516, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Analysis
Ala20
Predicted Molecular Mass
57.5 kDa
SDS-PAGE
95-115 kDa, reducing conditions

Product Datasheets

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2769-IL

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.

2769-IL

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 with polar packs. 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.
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Background: IL-31RA

The interleukin-31 receptor A subunit (IL-31 RA), also known as gp130-Like Monocyte Receptor (GLM-R or GPL), is a ~100 kDa type I transmembrane glycoprotein that is classified as being a type I cytokine receptor (1, 2). A heterodimeric complex of IL-31 RA and the oncostatin M receptor (OSM-R) functions as the signaling receptor for IL-31 (3). Both subunits are inducibly expressed throughout the myelomonocytic lineage and are upregulated by interferon-gamma and bacterial lipopolysaccharides (1-3). IL-31 RA is also expressed on keratinocytes, dorsal root ganglia neurons, and variably on lung epithelial cells (3-6). The 732 amino acid (aa) IL-31 RA contains a 19 aa signal sequence, a 500 aa extracellular domain (ECD), a 21 aa transmembrane domain and a 192 aa cytoplasmic domain. The ECD shares 60%, 58%, 73% and 70% aa identity with mouse, rat, canine and bovine IL-31 RA ECD, respectively. Human IL-31 receptors do not respond to mouse IL-31 (7). The ECD contains five fibronectin type III domains; the first two contain four conserved cysteine residues and a WSXWS motif common to type I cytokine receptors (2). Twelve alternately spliced human IL-31 RA isoforms are known and range in size from 356-745 amino acids. A long (745 aa) and a short (560 aa) transmembrane form are the predominant forms, and many cell lines express both forms (8). The long form, like the 732 aa form, signals by recruiting STAT3, 5 or 1, while the short form does not recruit STATs and inhibits IL-31 signaling. The ratio of these forms and their co-expression with OSM-R determines a cell’s response to IL-31 (8). In both humans and transgenic mice, IL-31 from skin-homing Th2 cells may contribute to the pruritis (itching) associated with nonatopic dermatitis, especially in infected skin (3, 9, 10).

References
  1. Ghilardi, N. et al. (2002) J. Biol. Chem. 277:16831.
  2. Diveu, C. et al. (2003) J. Biol. Chem. 278:49850.
  3. Dillon, S. R. et al. (2004) Nat. Immunol. 5:752.
  4. Chattopadhyay, S. et al. (2007) J. Biol. Chem. 282:3014.
  5. Perrigoue, J. G. et al. (2007) J. Exp. Med. 204:481.
  6. Bando, T. et al. (2006) Neuroscience 142:1263.
  7. Broxmeyer, H. E. et al. (2007) Exp. Hematol. 35:78.
  8. Diveu, C. et al. (2004) Eur. Cytokine. Netw. 15:291.
  9. Bilsborough, J. et al. (2006) J. Allergy Clin. Immunol. 117:418.
  10. Sonkoly, E. et al. (2006) J. Allergy Clin. Immunol. 117:411.
Long Name
Interleukin 31 Receptor A
Entrez Gene IDs
133396 (Human); 218624 (Mouse)
Alternate Names
class I cytokine receptor; CRL3; CRL3Glmr; Cytokine receptor-like 3; GLMR; GLM-R; GLM-RMGC125346; GP130 like receptor; Gp130-like monocyte receptor; Gp130-like receptor; hGLM-R; IL-31 RA; IL-31 receptor subunit alpha; IL-31R subunit alpha; IL31RA; IL-31RA; IL-31RAGPLCRL; IL-31R-alpha; interleukin 31 receptor A; interleukin-31 receptor subunit alpha; PRO21384; soluble type I cytokine receptor CRL3; zcytoR17

Citation for Recombinant Human IL-31RA 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.

1 Citation: Showing 1 - 1

  1. A sensory neuron-expressed IL-31 receptor mediates T helper cell-dependent itch: Involvement of TRPV1 and TRPA1.
    Authors: Cevikbas F, Wang X, Akiyama T, Kempkes C, Savinko T, Antal A, Kukova G, Buhl T, Ikoma A, Buddenkotte J, Soumelis V, Feld M, Alenius H, Dillon S, Carstens E, Homey B, Basbaum A, Steinhoff M
    J Allergy Clin Immunol, 2013-12-25;133(2):448-60.
    Species: Human
    Sample Types: Antibody
    Applications: IHC Control

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Recombinant Human IL-31RA Protein, CF
By Anonymous on 01/31/2021
Application: SDS-PAGE Control
Reason for Rating: High purity by SDS PAGE as analyzed prior to use.