IL-21 Antibody Cat. No.: 2465

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psi-iconSpecifications
HOST SPECIES:Rabbit
SPECIES REACTIVITY: Human
HOMOLOGY: Predicted species reactivity based on immunogen sequence: Bovine: (100%), Pig: (87%), Mouse: (86%), Rat: (86%)
IMMUNOGEN: IL-21 antibody was raised against a synthetic peptide corresponding to 15 amino acids near the center of human IL-21 precursor.

The immunogen is located within the last 50 amino acids of IL-21.
TESTED APPLICATIONS: ELISA, ICC, WB
APPLICATIONS: IL-21 antibody can be used for detection of IL-21 by Western blot at 1 μg/mL. Antibody can also be used for immunocytochemistry starting at 2 μg/mL.

Antibody validated: Western Blot in human samples and Immunocytochemistry in human samples. All other applications and species not yet tested.
SPECIFICITY: At least two isoforms of IL-21 are known to exist; this antibody will detect both isoforms. IL-21 antibody is predicted to not cross-react with other members of the interleukin protein family.
POSITIVE CONTROL:1) Cat. No. 1209 - HL60 Cell Lysate
 2) Cat. No. 1208 - THP-1 Cell Lysate
 3) Cat. No. 17-004 - K-562 Cell Slide
PREDICTED MOLECULAR WEIGHT: Predicted: 18 kDa

Observed: 18 kDa

psi-iconProperties
PURIFICATION:IL-21 Antibody is affinity chromatography purified via peptide column.
CLONALITY:Polyclonal
ISOTYPE:IgG
CONJUGATE:Unconjugated
PHYSICAL STATE:Liquid
BUFFER:IL-21 Antibody is supplied in PBS containing 0.02% sodium azide.
CONCENTRATION:batch dependent
STORAGE CONDITIONS:IL-21 antibody can be stored at 4˚C for three months and -20˚C, stable for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures.

psi-iconAdditional Info
OFFICIAL SYMBOL:IL21
ALTERNATE NAMES:IL-21 Antibody: Za11, IL-21, Interleukin-21, Za11
ACCESSION NO.:NP_068575
PROTEIN GI NO.:11141875
GENE ID:59067
USER NOTE:Optimal dilutions for each application to be determined by the researcher.
psi-iconBackground and References
BACKGROUND:IL-21 Antibody: A novel cytokine was recently identified in human and mouse and designated IL-21, which has significant homology to IL-2, IL-4, and IL-15. The receptor for IL-21 (IL-21R, also termed NILR for novel Interleukin receptor) is a new member of the class I cytokine receptor family. IL-21R forms a complex with the common cytokine receptor gamma chain, gammac, and mediates IL-21 signaling. IL-21 and its receptor activate JAK-STAT signaling pathway. IL-21 is expressed in activated T cells, and HL-60 and THP-1 cell lines. IL-21 plays a role in the proliferation and maturation of NK, B and T cell populations.
REFERENCES:1) Parrish-Novak J, Dillon SR, Nelson A, et al. Interleukin 21 and its receptor are involved in NK cell expansion and regulation of lymphocyte function. Nature 2000; 408:57-63.
2) Ozaki K, Kikly K, Michalovich D, et al.  Cloning of a type I cytokine receptor most related to the IL-2 receptor β chain. Proc. Natl. Acad. Sci. USA. 2000; 97:11439-44.
3) Asao H, Okuyama C, Kumaki S, et al. The common γ-chain is an indispensable subunit of the IL-21 receptor complex. J. Immunol. 2001; 167:1-5.

ANTIBODIES FOR RESEARCH USE ONLY.

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