IL-21 Antibody

• Catalog Number: orb344650
• Category: Antibodies
• Description: IL21 antibody
• Clonality: Polyclonal
• Species/Host: Rabbit
• Isotype: IgG
• Conjugation: Unconjugated
• Reactivity: Bovine, Equine, Porcine
• Form/Appearance: Lyophilized
• Concentration: 1.0 mg/mL
• Buffer/Preservatives: 0.01% (w/v) Sodium Azide
• Purity: This product was Protein-A purified from monospecific antiserum by chromatography. This antibody is specific for bovine IL-21 protein. A BLAST analysis was used to suggest cross-reactivity with IL-21 from bovine sources based on 100% homology with the immunizing sequence. Based on 92% homology, there is a chance of cross-reactivity to porcine IL- 21, 91% to horse IL-21, 89% to human and dog, 88% to macaque, 84% to platypus and Syrian hamster, 76-79% to mouse, 75% to rat, and 48% to chicken. Cross-reactivity with IL-21 from other sources has not been determined.
• Immunogen: This protein-A purified antibody was prepared from whole rabbit serum produced by repeated immunizations with a recombinant protein raised in yeast, corresponding to amino acid residues 24-152 of bovine IL-21 protein.
• UniProt ID: Q76LU5
• Tested applications: ELISA, WB
• Dilution range: ELISA: 1:6,000, WB: 1 µg/mL
• Application notes: IL-21 is expressed in activated CD4-positive T-cells but not in CD8-positive T-cells, B-cells, or monocytes, and in HL-60 and THP-1 cell lines. This protein-A purified antibody has been tested for use in ELISA and western blotting. Specific conditions for reactivity should be optimized by the end user. Expect a band approximately 15.1 kDa in size corresponding to bovine IL-21 protein by western blotting in the appropriate cell lysate or extract.
• Antibody Type: Primary Antibody
• Storage: Store vial at 4° C prior to restoration. For extended storage aliquot contents and freeze at -20° C or below. Avoid cycles of freezing and thawing. Centrifuge product if not completely clear after standing at room temperature. This product is stable for several weeks at 4° C as an undiluted liquid. Dilute only prior to immediate use.
• Alternative names: rabbit anti-IL21 Antibody, Interleukin-21, IL-21,
• Note: For research use only
• NCBI: Q76LU5.2
• Expiration Date: 12 months from date of receipt.

Western blot using Biorbyt's anti-bovine IL-21 antibody shows detection of recombinant bovine IL-21 at 15.1kDa (arrow) raised in yeast. Protein was purified and resolved by SDS-PAGE, transferred to PVDF membrane. Membrane was blocked with 3% BSA ( diluted 1:10), and probed with Biorbyt's Anti-bovine IL-21. After washing, membrane was probed with Dylight ™ 649 Conjugated Anti-Rabbit IgG (H&L) (Donkey) Antibody.