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Recombinant Human IL21 Protein, C-His (HV658012)

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Recombinant Human IL21 Protein, C-His

Recombinant Human IL21 Protein, C-His

Recombinant Human IL21 Protein, C-His

Recombinant Human IL21 Protein, C-His

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Datasheet

Overview

Catalog No.	HV658012
Description	Recombinant Human IL21 Protein, C-His (HV658012) expressed in E. coli, spanning Leu23-Ser162. Purity: >90% by SDS-PAGE. Highlights ●His-Tagged — N-terminal 6×His tag for IMAC purification. ●E. coli Expression — High-yield, cost-effective production. ●High Purity — >90% purity verified by SDS-PAGE.
Expression system	E. coli
Accession	Q9HBE4
Protein length	Leu23-Ser162
Applications	ELISA, Immunogen, SDS-PAGE, WB, Bioactivity testing in progress
Species	Homo sapiens (Human)
Nature	Recombinant
Endotoxin level	Please contact with the lab for this information.
Purity	>90% as determined by SDS-PAGE.
Predicted molecular weight	17.45 kDa
Form	Lyophilized
Storage buffer	Lyophilized from a solution in PBS pH 7.4, 0.02% NLS, 1 mM EDTA, 4% Trehalose, 1% Mannitol. Please refer to the specific buffer information in the hardcopy of datasheet or the lot-specific COA.
Reconstitution	Reconstitute in sterile water for a stock solution. Adjust the volume of sterile water so that, after reconstitution, the final stock concentration matches the value indicated on the product label or datasheet. RECONSTITUTION PROTOCOL 1. Allow the product to be reconstituted and the reconstitution diluent to reach room temperature. 2. Tap or briefly centrifuge the product vial before opening to dislodge any lyophilized material that may be dispersed on the wall or cap of the vial. 3. Use the diluent and stock concentration recommended in the product datasheet. If preparing a stock concentration higher than recommended, contact Technical Service. 4. After adding the diluent, re-cap the vial and invert gently by hand or place on a slow rocking platform to allow the reconstitution diluent to coat all the surfaces inside the vial. Note: Do not mix by vortexing or by pipetting the material up and down. 5. Allow the vial to sit at room temperature with gentle agitation for at least 15 minutes before aliquotting or using. 6. Store the reconstituted material in single use aliquots in polypropylene or siliconized tubes. Aliquots of 10 μL or larger are recommended.
Shipping	In general, proteins are provided as lyophilized powder/frozen liquid. They are shipped out with dry ice/blue ice unless customers require otherwise.
Stability and Storage	Use a manual defrost freezer and avoid repeated freeze thaw cycles. Store at 2 to 8°C for frequent use. Store at -20 to -80°C for twelve months from the date of receipt.
Alternate Names	IL-21, Interleukin-21, IL21, Za11
Background	Interleukin-21 (IL21) is a ~18 kDa protein. 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. 1. Parrish-Novak, J. et al. (2000) Nature 408, 57-63. PMID: 11081504 2. Strengell, M. et al. (2004) Journal of leukocyte biology 76, 416-22. PMID: 15178704
Note	For research use only.

Images

SDS-PAGE

SDS-PAGE for Recombinant Human IL21 Protein, C-His
Western blot

Detected by Anti-IL21 monoclonal antibody (Catalog No: HV658026)

References

HV658012-SDS-PAGE-1.jpg

Datasheet

Recombinant Human IL21 Protein, C-His.pdf

Formula

Mass (g) = Concentration (mol/L) × Volume (L) × MW (g/mol)

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Formula

C₁ × V₁ = C₂ × V₂

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Stock Solution

C₁ (Stock Conc.)

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V₁ (Stock Vol.)

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Working Solution

C₂ (Working Conc.)

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Recombinant Human IL21 Protein, C-His