IL-21R Protein, Human, Recombinant (hFc)

IL-21R Protein, Human, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 52 kDa and the accession number is Q9HBE5.

IL-21R Protein, Human, Recombinant (hFc)

パッケージサイズ	在庫状況	単価(税別)
100 μg	在庫あり	￥ 52,500
200 μg	約5 days	￥ 93,000

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生物学的情報

1. Measured by its ability to inhibit IL21-induced Interferon gamma secretion by human natural killer lymphoma NK-92 cells. The ED50 for this effect is typically 40-200 ng/mL in the presence of 2 ng/mL of recombinant human IL21. 2. Immobilized Recombinant Human Interleukin-21 / IL-21 Protein at 2μg/mL (100μL/well) can bind Recombinant Human IL-21R / Il21R Protein (Fc Tag), the EC50 is 130-480 ng/mL.

説明

IL-21R Protein, Human, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 52 kDa and the accession number is Q9HBE5.

Species	Human
Expression Host	HEK293 Cells
Tag	C-hFc
Accession Number	Q9HBE5
別名	interleukin 21 receptor, CD360, NILR
Construction	The Human IL21R (NP_068570.1) (Met1-Pro236) was expressed with the Fc region of Human IgG1 at the C-terminus.
Protein Purity	> 90 % as determined by SDS-PAGE.
分子量	52 kDa (predicted)

Endotoxin	< 1.0 EU/μg of the protein as determined by the LAL method.
Formulation	Lyophilized from a solution filtered through a 0.22 μm filter, containing PBS, pH 7.4. Typically, a mixture containing 5% to 8% trehalose, mannitol, and 0.01% Tween 80 is incorporated as a protective agent before lyophilization.
Reconstitution	A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information.
Stability & Storage	It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at-80℃. For reconstituted proteinsolutions, the solution can be stored at -20°c to -80'c for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.
Shipping	In general, Lyophilized powders are shipping with blue ice.
Research Background	Interleukin-21 receptor, also known as IL-21 receptor, IL-21R, Novel interleukin receptor, IL21R, and NILR, is a single-pass type I membrane protein that belongs to the type I cytokine receptor family and Type 4 subfamily. Interleukin-21 (IL-21) belongs to a family of cytokines that bind to a composite receptor consisting of a private receptor (IL-21R) and the common cytokine receptor gamma chain ( gamma(C) ). The IL-21R is discovered as a novel member of the class-I-cytokine-receptor family and is selectively expressed in lymphoid tissues. IL-21R shows strong sequence homologies to the interleukin-4 receptor alpha chain gene (IL-4RA). The WSXWS motif of IL-21R appears to be necessary for proper protein folding and thereby efficient intracellular transport and cell-surface receptor binding. The box 1 motif of IL-21R is required for JAK interaction and/or activation. The IL-21R is widely distributed on lymphohematopoietic cells and IL21 impacts some cell types, including CD8+ memory T cells, NK cells, and subsets of CD4 memory T cells. Increased IL21 production is characteristic of certain autoimmune diseases and is likely to contribute to autoantibody production as well as pathological features of autoimmune disease. The critical role of IL21 in promoting humoral immune responses makes it an important focus of potential therapeutic interventions in conditions characterized by the overproduction of pathogenic autoantibodies.

参考文献

1. Asao H, et al. (2001) Cutting edge: the common gamma-chain is an indispensable subunit of the IL-21 receptor complex. J Immunol. 167(1): 1-5. 2. Wu Z, et al. (2005) Interleukin-21 receptor gene induction in human T cells is mediated by T-cell receptor-induced Sp1 activity. Mol Cell Biol. 25(22): 9741-52. 3. De Totero D, et al. (2006) Interleukin-21 receptor (IL-21R) is up-regulated by CD40 triggering and mediates proapoptotic signals in chronic lymphocytic leukemia B cells. Blood. 107(9): 3708-15.

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IL-21R Protein, Human, Recombinant (hFc)

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