Human IL-17A&IL-17F Heterodimer Protein, Twin Strep&His Tag, low endotoxin (MALS verified)
Synonym
IL-17A, Interleukin-17A, CTLA-8, IL-17, IL-17F, Interleukin-17F, Cytokine ML-1, IL17A＆IL17F
Source
Human IL-17A&IL-17F Heterodimer Protein, Twin Strep&His Tag (ILF-H52W6) is expressed from human 293 cells (HEK293). It contains AA Gly 24 - Ala 155 (IL-17A) & Arg 31 - Gln 163 (IL-17F) (Accession # Q16552-1 (IL-17A) & Q96PD4-1 (IL-17F)). Two sequential affinity purification steps were used to ensure exact 1:1 molar ratio of IL17A＆IL17F heterodimer.
Predicted N-terminus: Trp (IL-17A) & His (IL-17F)
Molecular Characterization
Human IL-17A&IL-17F Heterodimer Protein, Twin Strep&His Tag, produced by co-expression of IL-17A and IL-17F, has a calculated MW of 18.5 kDa (IL-17A) and 16.8 kDa (IL-17F). Subunit IL-17A is fused with a Twin Strep tag at the N-terminus and subunit IL-17F is fused with a polyhistidine tag at the N-terminus. The protein migrates as 19-27 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
The protein is designed as a heterodimer.
Endotoxin
Less than 0.01 EU per μg by the LAL method / rFC method.
Purity
>90% as determined by SDS-PAGE.
>95% as determined by SEC-MALS.
Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
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Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 12 months in lyophilized state;
-70°C for 3 months under sterile conditions after reconstitution.
Background
Interleukin-17A (IL17A) is also known as cytotoxic T-lymphocyte-associated antigen 8 (CTLA8),which is a proinflammatory cytokine produced by activated T cells. IL17A can regulate the activities of NF-kappaB and mitogen-activated protein kinases. Also,IL17A can stimulate the expression of IL6 and cyclooxygenase-2 (PTGS2/COX-2), as well as enhance the production of nitric oxide (NO).Furthermore,IL17A has been found both in glycosylated and nonglycosylated forms. High levels of IL-17 are associated with several chronic inflammatory diseases including rheumatoid arthritis, psoriasis and multiple sclerosis.
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