Human IL21 - Recombinant Protein | Custom Made-To-Order

Name: Human IL21 (Interleukin-21) - Recombinant Protein
Brand: Beta LifeScience
SKU: BLT-08812P
Price: 445.0 USD
Availability: InStock

Beta Lifescience recombinant protein notice with SDS-PAGE availability in next QC run

Price Save $150

Size

100ug

Quantity

Quantity Pricing

Pack Size	Price (USD)
500 µg	$1,030 (Fall Promotion)
1 mg	$1,870 (Fall Promotion)

For direct online orders, quantity pricing will be displayed in cart when you add 5x100ug or 10x100ug

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Product Overview

Product Name	Recombinant Human Interleukin 21 (IL21) Protein
Product Overview	This recombinant human Interleukin 21 (IL21) protein includes amino acids 32-162 of the target gene is expressed in HEK293 Cells.The protein is supplied in lyophilized form and formulated in PBS pH 7.4, 0.01% SKL, 5% Trehalose, 1% Mannitolprior to lyophilization.
Target Uniprot Id	Q9HBE4
Recommended Name	Interleukin-21
Gene Name	IL21
Synonyms	CVID11;IL-21;Za11
Species	Human
Predicted Molecular Mass	19kDa
Expression System	Mammalian Cell
Expression Range	32-162
Tag	C-6His
Purity	>90%
Formulation	Lyophilized
Buffer	PBS pH 7.4, 0.01% SKL, 5% Trehalose, 1% Mannitol
Storage Condition	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Reconstitution Instruction	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Applications	Positive Control; Immunogen; SDS-PAGE; WB
Research Area	Immunology
Target Function	Cytokine with immunoregulatory activity. May promote the transition between innate and adaptive immunity. Induces the production of IgG(1) and IgG(3) in B-cells. Implicated in the generation and maintenance of T follicular helper (Tfh) cells and the formation of germinal-centers. Together with IL6, control the early generation of Tfh cells and are critical for an effective antibody response to acute viral infection. May play a role in proliferation and maturation of natural killer (NK) cells in synergy with IL15. May regulate proliferation of mature B- and T-cells in response to activating stimuli. In synergy with IL15 and IL18 stimulates interferon gamma production in T-cells and NK cells. During T-cell mediated immune response may inhibit dendritic cells (DC) activation and maturation.
Subcellular Location	Secreted.
Protein Family	IL-15/IL-21 family
Associated Diseases	Immunodeficiency, common variable, 11 (CVID11)
Tissue Specificity	Expressed in activated CD4-positive T-cells but not in CD8-positive T-cells, B-cells, or monocytes.

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FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.