Recombinant Human IL-10 R beta Fc Chimera Protein, CF

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Recombinant Human IL-10 R beta Fc Chimera Protein, CF Summary

Product Specifications

>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Level
<0.01 EU per 1 μg of the protein by the LAL method.
Measured by its binding ability in a functional ELISA. When Recombinant Human IL 28 R alpha /IFN lambda R1 Fc Chimera (Catalog # 5260-MR) is immobilized at 5.00 μg/mL (100 μL/well), the concentration of Recombinant Human IL-10 R beta Fc Chimera that produces 50% of the optimal binding response is found to be approximately 0.300-3.00 μg/mL.
Mouse myeloma cell line, NS0-derived human IL-10 R beta protein
Human IL-10 R beta
Accession # Q08334
6-His tag
N-terminus C-terminus
Accession #
N-terminal Sequence
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
51 kDa (monomer)
75-85 kDa, reducing conditions

Product Datasheets

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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.


Formulation Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
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.
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Background: IL-10 R beta

Interleukin-10 Receptor beta (IL-10 R beta ), also known as IL-10 R2 and CRF2-4, is a 60 kDa transmembrane glycoprotein that functions as a co-receptor for several class 2 cytokines including Interleukins-10, -22, -26, -28A/IFN-lambda 2, -28B/IFN-lambda 3, and -29/IFN-lambda (1, 2). IL-10 R beta associates with ligand‑specific receptor subunits to form signaling receptor complexes, e.g. IL-10 R alpha for IL-10 (3, 4), IL-20 R alpha for IL-26 (5, 6), IL-22 R alpha for IL-22 (7, 8), and IL-28 R alpha for IL-28A, IL-28B, and IL-29 (9, 10). IL‑10 R beta is widely expressed, while the associated receptor subunits exhibit differential expression patterns (1). The ligand‑specific subunits are responsible for the divergent functions of these cytokines, encompassing immune suppression, promotion or inhibition of inflammation, mucosal defense, antiviral immunity, and hematopoiesis (1). IL-10 R beta deficient mice lack responsiveness to each of those cytokines. IL-10 R beta contributes to ligand binding, but effective signaling is only triggered in the presence of the ligand‑specific subunit (8, 9, 11). In the case of IL-10, a cytokine dimer binds to two IL‑10 R alpha /IL-10R1 chains, resulting in recruitment of two IL-10 R beta /IL-10R2 chains (3, 12). Some members of the IL-10 family are monomeric cytokines and interact with single molecules of IL-10 R beta and their ligand‑specific subunit (1). Mature human IL-10 R beta consists of a 201 amino acid (aa) extracellular region with two fibronectin type-III domains, a 22 aa transmembrane segment and a 83 aa cytoplasmic domain (13). Within the ECD, human IL-10 R beta shares 75% and 78% aa sequence identity with mouse and rat IL-10 R beta, respectively.

  1. Commins, S. et al. (2008) J. Allergy Clin. Immunol. 121:1108.
  2. Pestka, S. et al. (2004) Annu. Rev. Immunol. 22:929.
  3. Kotenko, S.V. et al. (1997) EMBO J. 16:5894.
  4. Spencer, S.D. et al. (1998) J. Exp. Med. 187:571.
  5. Sheikh, F. et al. (2004) J. Immunol. 172:2006.
  6. Hor, S. et al. (2004) J. Biol. Chem. 279:33343.
  7. Kotenko, S.V. et al. (2000) J. Biol. Chem. 276:2725.
  8. Xie, M.-H. et al. (2000) J. Biol. Chem. 275:31335.
  9. Kotenko, S.V. et al. (2003) Nat. Immunol. 4:69.
  10. Sheppard, P. et al. (2003) Nat. Immunol. 4:63.
  11. Yoon, S.I. et al. (2006) J. Biol. Chem. 281:35088.
  12. Pletnev, S. et al. (2005) BMC Struct. Biol. 5:10.
  13. Lutfalla, G. et al. (1993) Genomics 16:366.
Long Name
Interleukin 10 Receptor beta
Entrez Gene IDs
3588 (Human); 16155 (Mouse)
Alternate Names
CDw210b antigen; CDw210b; CRF2-4IL-10R subunit 2; CRFB4; CRFB4human transmembrane receptor protein; cytokine receptor10CDW210B; D21S58; D21S66; IBD25; IL-10 R beta; IL-10 receptor subunit beta; IL10R beta; IL-10R2; IL-10R2IL-10R subunit beta; IL10RB; IL-10Rb; interleukin 10 receptor, beta; Interleukin-10 receptor subunit 2; interleukin-10 receptor subunit beta; member 4

Citations for Recombinant Human IL-10 R beta Fc Chimera 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
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  1. Differential expression of interferon-lambda receptor 1 splice variants determines the magnitude of the antiviral response induced by interferon-lambda 3 in human immune cells
    Authors: DM Santer, GES Minty, DP Golec, J Lu, J May, A Namdar, J Shah, S Elahi, D Proud, M Joyce, DL Tyrrell, M Houghton
    PLoS Pathog., 2020;16(4):e1008515.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  2. The expanded family of class II cytokines that share the IL-10 receptor-2 (IL-10R2) chain.
    Authors: Donnelly RP, Sheikh F, Kotenko SV, Dickensheets H
    J. Leukoc. Biol., 2004;76(2):314-21.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay


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