Human Recombinant IL-21 (from E. coli)

Supplier: Shenandoah Biotechnology

Certificates

Supplier: Shenandoah Biotechnology

About this item

Interleukin 21 (IL-21) is a member of the common-gamma chain family of cytokines that are involved in immunoregulation. IL-21 is normally expressed by activated CD4+ T cells and is aberrantly expressed in Hodgkin lymphoma cells. The IL-21 receptor (IL-21R) activates the JAK/STAT signaling pathway and is expressed on T, B, and natural killer (NK) cells.

High quality
Low endotoxin
Affordable

Within the B cell lineage, IL-21 is a switch factor regulating IgG1 and IgG3 antibody production. IL-21 also cooperates with IL-4 for the production of multiple antibody classes in B cells. IL-21 has pleiotropic effects on the proliferation, differentiation, and effector functions of B, T, NK, and dendritic cells.

Animal-Free (AF) proteins are identical to regular proteins and include additional documentation showing that they were produced with no materials of animal or human origin using ANIMAL-FREE purification processes.

Delivery: A certificate of analysis (COA) is supplied with each product shipped detailing purity, formulation, biological activity, endotoxin levels, reconstitution instructions and recommended storage conditions.

Caution: For research use only.

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Specifications

Conjugation:
Unconjugated
Protein function:
Cytokine
Protein/peptide type:
Recombinant
Source:
E. coli
Species:
Human
Storage conditions:
−20 °C
Endotoxin content:
Endotoxin LAL (EU/µg) ≤1
Biological activity:
Bioactivity assay: B9 cell proliferation, ED50 ≤5 ng/ml, bioactivity ≥2,0×10⁵ units/mg
Gene ID:
Q9HBE4
Reconstitution instructions:
Sterile water at 0,1 mg/ml
Endotoxin-free:
N
Carrier-free:
Y
Protease-free:
N
Animal-free:
N
UniProtKB:
Q9HBE4
Protein/peptide name:
IL-21
Purity:
≥97%
Molecular weight:
15,4 kDa
Sequence:
MQDRHMIRMR QLIDIVDQLK NYVNDLVPEF LPAPEDVETN CEWSAFSCFQ KAQLKSANTG NNERIINVSI KKLKRKPPST NAGRRQKHRL TCPSCDSYEK KPPKEFLERF KSLLQKMIHQ HLSSRTHGSE DS
Endotoxin level:
Low
Formulation:
10 mM sodium phosphate, pH 7,5
Nuclease-free:
N
Grade:
RUO
Shipping temperature:
RT
Tested applications:
Bioassay