描述（Description）
IL-21 Protein, Human is a class 1 cytokine, which is produced by activated CD4+ T cells. IL-21 Protein stimulation of T cells, B cells and NK cells leads to enhanced proliferation and mature effector function.
純度（Purity）
≥95%, by SDS-PAGE (under reducing (R) & Non-reducing conditions, visualized by Coomassie staining)
生物活性（Bioactivity）
Measured by its ability to enhance IFN-gamma secretion in NK-92 human natural killer lymphoma cells. The ED50 for this effect is ≤ 20 ng/mL.
氨基酸序列（Target Protein Sequence）
HKSSSQGQDRHMIRMRQLIDIVDQLKNYVNDLVPEFLPAPEDVETNCEWSAFSCFQKAQLKSANTGNNERIINVSIKKLKRKPPSTNAGRRQKHRLTCPSCDSYEKKPPKEFLERFKSLLQKMIHQHLSSRTHGSEDS
制劑（Trait）
Lyophilized from PBS,5% mannitol and 0.01% Tween 80, pH7.4
復溶（Reconstitution）
It is recommended to redissolve in sterile deionized water.
保存條件&效期（Storage & Stability）
Stored at -20°C for 1 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.Please avoid repeated freeze-thaw cycles.
運輸方式(Shipping)
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
電泳（SDS-PAGE）
Recombinant Human IL-21(hFc Tag) (Cat. No. Y02903) SDS-PAGE under reducing (R) & Non-reducing conditions. The gel was stained with Y02903 SDS-PAGE.
特別提示：本公司的所有產(chǎn)品僅用于工業(yè)應用或者科學研究等非醫(yī)療目的,不可用于人類或動物的臨床診斷或者治療,非藥用,非食用。
關(guān)鍵字： GMP級;高純度;批間一致;生物活性;科研專供;
在生物科技領(lǐng)域，豐度蛋白專注重組蛋白供應，以“豐度的風帆為蛋白提供動力，豐度為蛋白護航”為使命，賦能生命科學發(fā)展。
蘇州豐度依托先進技術(shù)平臺，打造成熟生產(chǎn)體系，嚴控基因工程設計、細胞培養(yǎng)、蛋白純化等環(huán)節(jié)，優(yōu)化工藝與管理，確保產(chǎn)品高純度、高活性且批間一致。產(chǎn)品覆蓋基礎研究、生物醫(yī)藥研發(fā)等多領(lǐng)域，為科研及生產(chǎn)提供多樣、適配產(chǎn)品，助力突破技術(shù)難題 。