Recombinant Human Interleukin-21 (IL21) (Active)

Product Specifications

Product Name Alternative

Interleukin-21; IL-21; Za11; IL21

Abbreviation

Recombinant Human IL21 protein (Active)

Gene Name

IL21

UniProt

Q9HBE4

Expression Region

25-162aa

Organism

Homo sapiens (Human)

Target Sequence

HKSSSQGQDRHMIRMRQLIDIVDQLKNYVNDLVPEFLPAPEDVETNCEWSAFSCFQKAQLKSANTGNNERIINVSIKKLKRKPPSTNAGRRQKHRLTCPSCDSYEKKPPKEFLERFKSLLQKMIHQHLSSRTHGSEDS

Tag

C-terminal hFc1-tagged

Type

Active Protein & In Stock Protein

Source

Mammalian cell

Field of Research

Others

Endotoxin

≤10 EU/mg by the LAL method

Purity

Greater than 95% as determined by SDS-PAGE.

Activity

Yes

Bioactivity

Measured by its ability to enhance IFN-gamma secretion in NK-92 human natural killer lymphoma cells. The ED50 for this effect is ≤ 20 ng/mL.

Form

Lyophilized powder

Buffer

Lyophilized from a 0.2 μm filtered solution containing PBS,5% mannitoland 0.01% Tween 80, pH7.4

Reconstitution

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Molecular Weight

41.9 kDa

Storage Conditions

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.