Recombinant Human IL-17A/F Heterodimer Biotinylated Protein

Formulations:
Catalog # Availability Size / Price Qty
BT5837-025
Recombinant Human IL-17A/F Heterodimer Biotinylated Protein Bioactivity
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Recombinant Human IL-17A/F Heterodimer Biotinylated Protein Summary

Purity
>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Level
<1.0 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its ability to induce IL-6 secretion by NIH‑3T3 mouse embryonic fibroblast cells. The ED50 for this effect is 0.4‑2 ng/mL.
Source
Chinese Hamster Ovary cell line, CHO-derived human IL-17A/F Heterodimer protein
 Human IL-17A
(Gly24-Ala155)
Accession # Q16552
Human IL-17F 
(Arg21-GLN163)
Accession # Q96PD4
N-terminusC-terminus
N-terminal Sequence
Analysis
Gly24(IL-17A) & Arg21(IL-17F)
Structure / Form
Disulfide-linked heterodimer, Biotinylated via sugars
Predicted Molecular Mass
15 kDa (unlabeled IL-17A), 15 kDa (unlabeled IL-17F)

Product Datasheets

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

BT5837

Formulation Lyophilized from a 0.2 μm filtered solution in HCl with BSA as a carrier protein.
Reconstitution Reconstitute at 100 μg/mL in 4 mM HCl containing at least 0.1% human or bovine serum albumin
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

BT5837/CF

Formulation Lyophilized from a 0.2 μm filtered solution in HCl with Trehalose.
Reconstitution Reconstitute at 100 μg/mL in 4 mM HCl.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Data Image

Bioactivity Recombinant Human IL-17A/F Heterodimer Biotinylated Protein Bioactivity View Larger

Both Biotinylated Recombinant Human IL-17A/F (Catalog # BT5837) and unlabeled Recombinant Human IL‑17A/F Heterodimer (Catalog #
5837-IL) induces IL-6 secretion by NIH‑3T3 mouse embryonic fibroblast cells. The ED50 for this effect is 0.4-2 ng/mL. The similarity in activity highlights that the biotinylated protein is fully functional.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: IL-17A/F Heterodimer

Human IL-17A/F is an approximately 40 kDa, secreted, disulfide-linked heterodimeric glycoprotein comprised of two members of the IL-17 family of cytokines, IL-17A and IL-17F (1, 2). Members of this family demonstrate a structural motif termed a cysteine knot that also characterizes a large superfamily of growth factors. Although most cysteine knot superfamily members use three intrachain disulfide bonds to create a knot, IL-17 family molecules generate the same structural form with only two disulfide links (3-5). Mature human IL-17A and IL-17F share 61% and 56% amino acid sequence identity with mouse IL-17A and IL-17F, respectively. They share 50% aa sequence identity with each other. IL-17A/F and the IL-17A and IL-17F homodimers are produced by IL-23 activated Th17 cells (1, 6-10). The widely expressed receptors IL-17 RA and IL-17 RC form a heterodimer for the binding of IL-17A and IL-17F, as well as the heterodimeric IL-17A/F (6, 11, 12). IL-17A/F is a biologically active protein that induces chemokine production and airway neutrophilia with intermediate potency between IL-17A (most potent) and IL-17F (least potent) (7, 12). It is up-regulated in immune cells during inflammatory arthritis and contributes to disease severity (13).

References
  1. Wright, J.F. et al. (2007) J. Biol. Chem. 282:13447.
  2. Chang, S.H. and C. Dong (2007) Cell Res. 17:435.
  3. Kawaguchi, M. et al. (2004) J. Allergy Clin. Immunol. 114:1265.
  4. Kolls, J.K. and A. Linden (2004) Immunity 21:467.
  5. Gu, C. et al. (2013) Cytokine 64:477.
  6. Cheung, P.F.Y. et al. (2008) J. Immunol. 180:5625.
  7. Liang, S.C. et al. (2007) J. Immunol. 179:7791.
  8. Ouyang, W. et al. (2008) Immunity 28:454.
  9. Steinman, L. (2007) Nat. Med. 13:139.
  10. Hunter, C.A. (2005) Nat. Rev. Immunol. 5:521.
  11. Kuestner, R.E. et al. (2007) J. Immunol. 179:5462.
  12. Wright, J.F. et al. (2008) J. Immunol. 181:2799.
  13. Sarkar, S. et al. (2014) Clin. Exp. Immunol. 177:652.
Long Name
Interleukin 17 A/F
Alternate Names
CTLA8; CTLA8cytotoxic T-lymphocyte-associated serine esterase 8; Cytotoxic T-lymphocyte-associated antigen 8; Cytotoxic T-Lymphocyte-Associated Protein 8; IL17; IL-17; IL-17A; IL-17A/F Heterodimer; interleukin 17 (cytotoxic T-lymphocyte-associated serine esterase 8); interleukin 17A; interleukin-17A

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