Recombinant Human TLR8 GST (N-Term) Protein

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SDS-Page: Recombinant Human TLR8 Protein [H00051311-P01] - 12.5% SDS-PAGE Stained with Coomassie Blue.

Product Details

Summary
Reactivity HuSpecies Glossary
Applications WB, ELISA, PA, AP

Order Details

Recombinant Human TLR8 GST (N-Term) Protein Summary

Description
A recombinant protein with GST tag at N-terminal corresponding to the amino acids 1-1041 of Human TLR8 full-length ORF

Source: Wheat Germ (in vitro)

Amino Acid Sequence: MENMFLQSSMLTCIFLLISGSCELCAEENFSRSYPCDEKKQNDSVIAECSNRRLQEVPQTVGKYVTELDLSDNFITHITNESFQGLQNLTKINLNHNPNVQHQNGNPGIQSNGLNITDGAFLNLKNLRELLLEDNQLPQIPSGLPESLTELSLIQNNIYNITKEGISRLINLKNLYLAWNCYFNKVCEKTNIEDGVFETLTNLELLSLSFNSLSHVPPKLPSSLRKLFLSNTQIKYISEEDFKGLINLTLLDLSGNCPRCFNAPFPCVPCDGGASINIDRFAFQNLTQLRYLNLSSTSLRKINAAWFKNMPHLKVLDLEFNYLVGEIASGAFLTMLPRLEILDLSFNYIKGSYPQHINISRNFSKLLSLRALHLRGYVFQELREDDFQPLMQLPNLSTINLGINFIKQIDFKLFQNFSNLEIIYLSENRISPLVKDTRQSYANSSSFQRHIRKRRSTDFEFDPHSNFYHFTRPLIKPQCAAYGKALDLSLNSIFFIGPNQFENLPDIACLNLSANSNAQVLSGTEFSAIPHVKYLDLTNNRLDFDNASALTELSDLEVLDLSYNSHYFRIAGVTHHLEFIQNFTNLKVLNLSHNNIYTLTDKYNLESKSLVELVFSGNRLDILWNDDDNRYISIFKGLKNLTRLDLSLNRLKHIPNEAFLNLPASLTELHINDNMLKFFNWTLLQQFPRLELLDLRGNKLLFLTDSLSDFTSSLRTLLLSHNRISHLPSGFLSEVSSLKHLDLSSNLLKTINKSALETKTTTKLSMLELHGNPFECTCDIGDFRRWMDEHLNVKIPRLVDVICASPGDQRGKSIVSLELTTCVSDVTAVILFFFTFFITTMVMLAALAHHLFYWDVWFIYNVCLAKVKGYRSLSTSQTFYDAYISYDTKDASVTDWVINELRYHLEESRDKNVLLCLEERDWDPGLAIIDNLMQSINQSKKTVFVLTKKYAKSWNFKTAFYLALQRLMDENMDVIIFILLEPVLQHSQYLRLRQRICKSSILQWPDNPKAEGLFWQTLRNVVLTENDSRYNNMYVDSIKQY

Preparation
Method
in vitro wheat germ expression system
Details of Functionality
This protein was produced in an in vitro wheat germ expression system that should preserve correct conformational folding that is necessary for biological function. While it is possible that this protein could display some level of activity, the functionality of this protein has not been explicitly measured or validated.
Source
Wheat germ
Protein/Peptide Type
Full Length Recombinant Protein
Gene
TLR8
Purity
>80% by SDS-PAGE and Coomassie blue staining

Applications/Dilutions

Dilutions
  • ELISA
  • Immunoaffinity Purification
  • Protein Array
  • Western Blot
Theoretical MW
146.2 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Packaging, Storage & Formulations

Storage
Store at -80C. Avoid freeze-thaw cycles.
Buffer
50 mM Tris-HCl, 10 mM reduced Glutathione, pH 8.0 in the elution buffer.
Preservative
No Preservative
Purity
>80% by SDS-PAGE and Coomassie blue staining

Notes

This product is produced by and distributed for Abnova, a company based in Taiwan.

Alternate Names for Recombinant Human TLR8 GST (N-Term) Protein

  • CD288 antigen
  • CD288
  • MGC119599
  • MGC119600
  • TLR8
  • toll-like receptor 8

Background

Toll-like receptor 8 (TLR8) is a member of the TLR family of receptors that play a role in innate immune system activation and the recognition of pathogen-associated molecular patterns (PAMPs) or damage-associated molecular patterns (DAMPs) (1,2). TLRs are type I membrane receptors that can be expressed on either the cell surface or internally, on endosomes (1,2). TLR8 is an endosomal receptor and is activated by pathogenic single stranded (ss) RNA (1-3). TLR8 is located on the X chromosome and is expressed mostly in monocytes/macrophages, neutrophils, and myeloid dendritic cells (1-3). Structurally, TLR8 consists of an extracellular domain, a cysteine-rich region, and transmembrane domain, and a Toll/Interleukin-1 receptor homology (TIR) domain (3,4). The extracellular domain contains a N-terminal leucine rich repeat (LRRNT) and a C-terminal LRR (LRRCT) which have 26 LRRs between them, each approximately 20-30 amino acids (aa), and a Z-loop between LRR14 and LRR15 (3). The primary isoform of the human TLR8 is synthesized as a protein 1041 aa in length with a theoretical molecular weight of ~120 kDa (4).

TLR8 is highly similar to TLR7 and both pathways are mediated by the adapter protein MyD88 to signal through IFN regulatory factor 7 (IRF7) and nuclear factor (NF)-kappaB (1-3,5). However, TLR7 recognizes guanosine and GU-rich ssRNA, while TLR8 recognizes uridine and AU-rich sequences (2,5). TLR7/TLR8 agonists, including derivatives of the immunostimulatory imiquimod, have been shown to be a promising cancer therapy capable of providing anticancer signals to antigen presenting cells (APCs), with many agonists being tested in both pre-clinical and clinical trials (6). Similarly, studies suggest that agonists for TLR8, in combination with other individual TLR agonists and antagonists, may also be useful for treating inflammatory allergic diseases, such as allergic rhinitis (7).

References

1. Sakaniwa, K., & Shimizu, T. (2020). Targeting the innate immune receptor TLR8 using small-molecule agents. Acta crystallographica. Section D, Structural biology, 76(Pt 7). https://doi.org/10.1107/S2059798320006518

2. Cervantes, J. L., Weinerman, B., Basole, C., & Salazar, J. C. (2012). TLR8: the forgotten relative revindicated. Cellular & molecular immunology. https://doi.org/10.1038/cmi.2012.38

3. Ohto, U., Tanji, H., & Shimizu, T. (2014). Structure and function of toll-like receptor 8. Microbes and infection. https://doi.org/10.1016/j.micinf.2014.01.007

4. Uniprot (Q9NR97)

5. Jannuzzi, G. P., de Almeida, J., Paulo, L., de Almeida, S. R., & Ferreira, K. S. (2020). Intracellular PRRs Activation in Targeting the Immune Response Against Fungal Infections. Frontiers in cellular and infection microbiology. https://doi.org/10.3389/fcimb.2020.591970

6. Frega, G., Wu, Q., Le Naour, J., Vacchelli, E., Galluzzi, L., Kroemer, G., & Kepp, O. (2020). Trial Watch: experimental TLR7/TLR8 agonists for oncological indications. Oncoimmunology. https://doi.org/10.1080/2162402X.2020.1796002

7. Golshiri-Isfahani, A., Amizadeh, M., & Arababadi, M. K. (2018). The roles of toll like receptor 3, 7 and 8 in allergic rhinitis pathogenesis. Allergologia et immunopathologia. https://doi.org/10.1016/j.aller.2017.09.026

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are guaranteed for 3 months from date of receipt.

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Bioinformatics

Gene Symbol TLR8