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)
Expression System
HEK293
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.
Overview
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.
Molecule Type
Protein
Storage and Shipping
Shape
Lyophilized
Reconstitution
It is recommended that sterile water be added to the vial to prepare a stock solution of 0.25mg/mL.
Storage
Store at -20°C,Avoid repeated freezing and thawing
Shipped In
Ice chest + Ice pads
Stability And Storage
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.
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