商品编号


CHI-HF-22021-C050



品牌


Adipogen



公司


Adipogen



公司分类


Proteins



Size

50 ?g

商品信息


More Information



Product Details



Synonyms

Interleukin-21



Product Type

Protein



Properties



Source/Host

CHO cells



Sequence

The extracellular domain of human IL-21 (aa 32-162) is fused to the N-terminus of the Fc region of a mutant human IgG1.



Crossreactivity

Human



BIOLOG
ical Activity

Shows the
BIOLOG
ical function of the IL-21 moiety and exerts a prolonged circulating half-life caused by the modified Fc domain.



Purity

≥98% (SDS-PAGE)



Endotoxin Content

<0.06eu mu;g="" protein="" (lal="" test;="" lonza).="">0.06eu>



Reconstitution

Reconstitute 50?g vial in 50?l sterile water.
Add 1X PBS to the desired protein concentration.



Formulation

Lyophilized from 0.2μm-filtered solution in PBS.



Other Product Data

Non-lytic: Acts as a long lasting fusion protein which only binds to the receptor. Mutations to the complement (C1q) and FcgR I binding sites of the IgGs Fc fragment render the fusion proteins incapable of antibody directed cytotoxicity (ADCC) and complement directed cytotoxicity (CDC).
NCBI reference NP_068575.1: IL-21 (human)



Declaration

Manufactured by Chimerigen.



Shipping and Handling



Shipping

BLUE ICE



Short Term Storage

+4°C



Long Term Storage

-20°C



Handling Advice

Avoid freeze/thaw cycles.



Use/St
ABI
lity

Stable for at least 1 year after receipt when stored at -20°C.
Working aliquots are stable for up to 3 months when stored at -20°C.



Documents



MSD
S

No



Product Specification Sheet



Datasheet


Download PDF





Interleukin-21 (IL-21) is a key factor in the transition between innate and adaptive immune responses secreted by activated T cells. The IL-21 receptor (IL-21R) is expressed in lymphoid tissue, in particular by NK, B, T and dendritic cells, macrophages and endothelial cells. Recent evidence suggests that IL-21 plays a supportive role in the proliferation of T and B cells and influences the cytolytic activity of natural killer cells. IL-21 has been shown to up-regulate genes associated with innate immunity and to inhibit the differentiation of na?ve T helper cells. IL-21 specifically inhibits IFN-γ production from developing TH1 cells and is preferentially expressed by TH2 cells. Fur
Thermo
re IL-21 has been identified as a growth and survival factor for human myeloma cells. IL-21/IL-21R interactions have a unique role in sequentially activating both innate and adaptive immune responses against poorly immunogenic tumors, le
ADI
ng to tumor rejection that is perforin dependent but IFN-γ independent.