IL21 (NM_021803) Human Recombinant Protein

Specifications

Product Data
Species	Human
Expression Host	E. coli
Expression cDNA Clone or AA Sequence	Protein Sequence (showhide) Human IL-21, the region of Gln32-Ser162, from gene Accession# NM_021803
Tag	Tag Free
Predicted MW	15.5 kDa
Concentration	lot specific
Purity	>98%, as determined by Coomassie stained SDS-PAGE.
Buffer	1 x PBS
Storage	Store at -80°C.
Stability	Unopened vial can be stored between 2°C and 8°C for up to 2 weeks, at -20°C for up to 6 months, or at -70°C or below until the expiration date. Aliquots can be stored between 2°C and 8°C for up to one week and stored at -20°C or colder for up to 3 months. Avoid repeated freeze/thaw cycles.
Bioactivity	The ED50 is 0.6 - 3.0 ng/ml, corresponding to a specific activity 8.3 x 10^5 - 3.3 x 10^6 units/mg determined by a dose-dependent induction of IFNγ secretion by NK-92 cells.
Endotoxin	Less than 0.01 ng per µg protein as determined by the LAL method
Reference Data
RefSeq	NP_068575
Locus ID	59067
UniProt ID	Q9HBE4
Refseq Size	642
Cytogenetics	4q27
Refseq ORF	486
Synonyms	CVID11; IL-21; Za11
Summary	This gene encodes a member of the common-gamma chain family of cytokines with immunoregulatory activity. The encoded protein plays a role in both the innate and adaptive immune responses by inducing the differentiation, proliferation and activity of multiple target cells including macrophages, natural killer cells, B cells and cytotoxic T cells. Dysregulation of this gene plays a role in multiple immune-mediated diseases including lupus, psoriasis and chronic inflammatory diseases. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]
Protein Families	Druggable Genome, Secreted Protein
Protein Pathways	Cytokine-cytokine receptor interaction, Jak-STAT signaling pathway

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