Human IL-21

IL-21, human recombinant
A cytokine regulating cells of the immune system
Product Overview
Alternate Names / Synonyms: Human IL-21, IL-21, IL21, IL 21, h-IL-21, rh-IL-21, recombinant human IL-21, recombinant IL-21, IL, interluekin
Gene Symbol: IL21
Accession #: Q9HBE4
Gene ID: 59067
Source: E. coli
Appearance: Lyophilized protein
Physical Form Description: Lyophilized (from 1 mg/ml solution containing no additives).
Molecular Weight: 15.5 kDa
Purity by SDS-PAGE: ≥90%
Purity by HPLC: ≥90%
Endotoxin Level: <0.1 ng/μg
Biological Activity: The recombinant human IL-21 is fully biologically active when compared to standard. The ED₅₀ as determined by the dose-dependent stimulation of human peripheral blood mononuclear cells is <5 ng/ml.
Reconstitution Instructions: Reconstitute in water to a concentration of 0.1-1.0 µg/µl (Note: Gently pippetting to dissolve). The solution can be diluted into other aqueous buffers and stored at 4°C for 1 week or –20°C for future use.
Storage Temp.: -20°C
Shipping: Gel pack
Background Information: Recombinant human IL-21 is a homodimeric, non-glycosylated polypeptide containing 133 amino acid residues and has a molecular weight of 15.5 kDa.
Handling: Centrifuge the vial prior to opening.
Usage: For Research Use Only! Not to be used in humans