GRADE & PURITYAnimal Free?Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material.Carrier Free?Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays.Bioactive?Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure.ActiBioPure™?ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required.Azide Free?Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory.High Performance?High-performance grade with optimized purity and performance characteristics. Use for sensitive analyses where ordinary grades fall short.His Tag?His tag grade — recombinant protein bearing a His tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein.≥92%(SDS-PAGE)
Accession #
Q9HBE5
Protein Tag
C-His
Expression system
HEK293
Endotoxin Concentration
<1.0 EU/μg
Bioactivity
1. Measured by its ability to bind human IL-21 in a functional ELISA. 2. Measured by its ability to inhibit IL-21-induced Interferon gamma secretion by human natural killer lymphoma NK-92 cells. The ED50 for this effect is typically 4-25 ng/mL in the presence of 2ng/mL of recombinant human IL-21.
Animal Free,Carrier Free,Bioactive,ActiBioPure™,Azide Free,High Performance,His-Tag,≥92%(SDS-PAGE) ActiBioPure™,Animal Free,Azide Free,Bioactive,Carrier Free,High Performance,His Tag for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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Storage & shipping
Store at -20°C,Avoid repeated freezing and thawing Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.
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Quality documents
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
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Literature proof
Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Vue d’ensemble
Purity >92% SDS-PAGE. Function This is a receptor for interleukin-21. Post-translational C-mannosylated at Trp-214 in the WSXWS motif, the sugar chain makes extensive hydrogen bonds with Asn-73 sugar, and bridges the two fibronectin domains transforming the V-shaped receptor into an A-frame.
1. Measured by its ability to bind human IL-21 in a functional ELISA. 2. Measured by its ability to inhibit IL-21-induced Interferon gamma secretion by human natural killer lymphoma NK-92 cells. The ED50 for this effect is typically 4-25 ng/mL in the presence of 2ng/mL of recombinant human IL-21.
45.9 kDa, under reducing conditions; 45.9 kDa, under non-reducing conditions.
Type de molécule
Protein
Stockage et expédition
Forme
Lyophilized
Reconstitution
It is recommended that sterile water be added to the vial to prepare a stock solution of 0.25mg/mL.
Conditions de stockage de stockage
Store at -20°C,Avoid repeated freezing and thawing
Expédié en
Ice chest + Ice pads
Stabilité et stockage
Store it under sterile conditions at -20℃ to -80℃ upon receiving. Upon receipt, it is recommended to aliquot. Avoid freeze/thaw cycle.
Images
Recombinant Human IL-21R Protein (rp147505) - Protein Bioactivity Measured by its ability to inhibit IL-21-induced Interferon gamma secretion by human natural killer lymphoma NK-92 cells. The ED50 for this effect is typically 4.0 - 25.0 ng/mL in the presence of 2 ng/mL of recombinant human IL-21.
Recombinant Human IL-21R Protein (rp147505) - ELISA Immobilized Recombinant Human IL-21 Protein at 4 μg/mL can bind biotinylated Recombinant Human IL-21R Protein (rp147505).
Recombinant Human IL-21R Protein (rp147505) - SDS-PAGE 3 μg/lane of Recombinant Human IL-21R Protein was resolved with SDS-PAGE under reducing (R) and non-reducing (N) conditions and visualized by Coomassie® Blue staining, showing the band at 45.9 kDa.
Documentation
📋 Safety Data Sheet (SDS)
Comprehensive hazard, handling, storage, and regulatory compliance document.
Determine the necessary mass, volume, or concentration for preparing a solution.
Dilution Calculator
Determine the dilution needed to prepare a stock solution.
Reconstitution Calculator
Avis
Avis des clients
Foire aux questions
What does Carrier Free mean?
Carrier Free indicates that the material has been processed and tested for specialty industrial processing. Specifications focus on the impurities that affect performance in that application — for example, metal content for electronics, particle size for batteries, refractive index for optics, or moisture content for moisture-sensitive processes.
How is this product shipped?
This product ships in an insulated container with ice pads. Unpack on arrival and transfer it to the storage condition stated above.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.
What is the purity of this product, and how is it determined?
This product is supplied at ≥92% purity, determined by SDS-PAGE. Lot-specific values are stated on the Certificate of Analysis.
What does Animal Free mean?
Animal Free indicates that the material has been processed and tested for specialty industrial processing. Specifications focus on the impurities that affect performance in that application — for example, metal content for electronics, particle size for batteries, refractive index for optics, or moisture content for moisture-sensitive processes.
How should this product be stored?
Store at ?20 °C. Avoid repeated freeze–thaw cycles. Aliquot into single-use volumes before freezing.
Need help choosing the grade?
Our grade selection guide covers purity, stabilizer status, and application suitability for all variants in our catalog.
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