Thermo Fisher Scientific IL21 Polyclonal Antibody, MaxPab

Applications

Tested Dilution

Publications

Western Blot (WB)

1:500-1:1,000

-

in situ PLA (PLA)

1:1200

-

Product Specifications

Species Reactivity

Human, Mouse

Host/Isotype

Rabbit / IgG

Class

Polyclonal

Type

Antibody

Immunogen

IL21 (NP_068575.1, 1 a.a. approximately 162 a.a) full-length human protein. if (typeof window.$mangular === undefined || !window.$mangular) { window.$mangular = {}; } $mangular.antigenJson = \[{targetFamily:IL-21,uniProtId:Q9HBE4-1,ncbiNodeId:9606,antigenRange:1-162,antigenLength:162,antigenImageFileName:H00059067-D01P_IL-21_Q9HBE4-1_Rabbit.svg,antigenImageFileNamePDP:H00059067-D01P_IL-21_Q9HBE4-1_Rabbit_PDP.jpeg,sortOrder:1}\]; $mangular.isB2BCMGT = false; $mangular.isEpitopesModalImageMultiSizeEnabled = true;

View immunogen .st0{fill:#FFFFFF;} .st1{fill:#1E8AE7;}

Conjugate

Unconjugated Unconjugated Unconjugated

Form

Liquid

Concentration

See Label

Purification

Affinity chromatography

Storage buffer

PBS, pH 7.4

Contains

no preservative

Storage conditions

-20° C, Avoid Freeze/Thaw Cycles

Shipping conditions

Ambient (domestic); Wet ice (international)

Product Specific Information

Sequence of this protein is as follows: MRSSPGNMER IVICLMVIFL GTLVHKSSSQ GQDRHMIRMR QLIDIVDQLK NYVNDLVPEF LPAPEDVETN CEWSAFSCFQ KAQLKSANTG NNERIINVSI KKLKRKPPST NAGRRQKHRL TCPSCDSYEK KPPKEFLERF KSLLQKMIHQ HLSSRTHGSE DS

Target Information

IL-21 is a 17 kDa immunomodulatory cytokine produced mainly by Natural Killer Cells (NKT), T helper (Th) 17 and T follicular helper (TFH) cells. In TFH cells, IL-21 expression leads to autocrine signaling through the IL-21 receptor (IL-21R) and STAT3, which leads to additional transcriptional activation by Bcl6. As with IFN gamma for Th1 and IL-4 for Th2 cells, IL-21 is critical for TFH cell development and effector function. IL-21 plays a role in T cell-dependent B cell differentiation into plasma cells and memory cells, stimulation of IgG production and induction of apoptotic signaling in naive B cells. In Th17 cells, IL-21 expression and autocrine feedback through STAT3, IRF4 and ROR gamma t lead to upregulation of the IL-23R, thereby preparing Th17 cells for maturation and maintenance by the inflammatory cytokine IL-23. While upregulating IRF4 and ROR gamma t, IL-21 also mediates the downregulation of Foxp3. IL-21 deficient mice are protected from developing colitis upon chemical treatment by their inability to upregulate Th17-associated molecules. In comparison, elevated levels of IL-21 are present in chemically-induced colitis mouse models.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.