Active Recombinant Human IL21 protein

• Cat.No.: IL21-0288H
• Product Overview: Recombinant Human IL21 protein(Q9HBE4-1)(Gln30-Ser162) was expressed in E. coli.

Specification

• Source: E. coli
• Species: Human
• Tag: N/A
• Form: Lyophilized from sterile PBS, pH 7.4Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
• Bio-activity: Measured by its ability to induced Interferon gamma secretion by human natural killer lymphoma NK-92 cells. The ED50 for this effect is 0.4-2 ng/mL.
• Molecular Mass: The recombinant human IL-21 consists of 134 amino acids and has a calculated molecular mass of 15.6 kDa. It migrates as an approximately 17 kDa band in SDS-PAGE under reducing conditions.
• Proteinlength: Gln30-Ser162
• Endotoxin: < 5 EU per mg of the protein as determined by the LAL method.
• Purity: ≥ 95 % as determined by SDS-PAGE. ≥ 95 % as determined by SEC-HPLC.
• Storage: Samples are stable for up to twelve months from date of receipt at -20°C to -80°C
  Store it under sterile conditions at -20°C to -80°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
• Reconstitution: It is recommended that sterile water be added to the vial to prepare a stock solution of 0.2 ug/ul. Centrifuge the vial at 4°C before opening to recover the entire contents.

Gene Information

• Gene Name: IL21 interleukin 21 [ Homo sapiens ]
• Official Symbol: IL21
• Synonyms: IL21; interleukin 21; interleukin-21; IL 21; Za11; interleukin-21 isoform; IL-21
• Gene ID: 59067
• mRNA Refseq: NM_001207006
• Protein Refseq: NP_001193935
• MIM: 605384
• UniProt ID: Q9HBE4