- Catalog number
- PA1484-Dylight594
- Size / count
- 100 µg
- Dry ice
- No
- Hazardous
- No
- Discontinued
- Yes
- Background
- TLR4, Toll-like receptor 4, is a protein that in humans is encoded by the TLR4 gene. TLR 4 is a toll-like receptor. TLR4, the human homolog of Drosophila Toll, is a type I transmembrane protein with an extracellular domain consisting of a leucine-rich repeat region and an intracellular domain homologous to that of human interleukin-1 receptor. The TLR4 gene is mapped to chromosome 9q32-q33 by fluorescence in situ hybridization.It detects lipopolysaccharide from Gram-negative bacteria and is thus important in the activation of the innate immune system.The protein encoded by this gene is a member of the Toll-like receptor (TLR) family, which plays a fundamental role in pathogen recognition and activation of innate immunity. TLRs are highly conserved from Drosophila to humans and share structural and functional similarities. They recognize pathogen-associated molecular patterns (PAMPs) that are expressed on infectious agents, and mediate the production of cytokines necessary for the development of effective immunity.
- Synonyms
- Toll-like receptor 4;hToll;CD284;TLR4;
- Gene Name
- Toll-like receptor 4
- UniProt
- O00206
- Host
- Rabbit
- Reactivity
- Human
- Cross Reactivity
- No cross-reactivity with other proteins
- Immunogen
- A synthetic peptide corresponding to a sequence at the N-terminus of human TLR4.
- Clonality
- Polyclonal
- Tissue Specificity
- Highly expressed in placenta, spleen and peripheral blood leukocytes. Detected in monocytes, macrophages, dendritic cells and several types of T-cells.
- Applications
- IHC,WB
- Purification
- Immunogen affinity purified.
- Concentration
- Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
- Form
- Lyophilized
- Reconstitution
- Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
- Function
- Cooperates with LY96 and CD14 to mediate the innate immune response to bacterial lipopolysaccharide (LPS). Acts via MYD88, TIRAP and TRAF6, leading to NF-kappa-B activation, cytokine secretion and the inflammatory response. Also involved in LPS- independent inflammatory responses triggered by free fatty acids, such as palmitate, and Ni (2+). Responses triggered by Ni (2+) require non-conserved histidines and are, therefore, species- specific. In complex with TLR6, promotes sterile inflammation in monocytes/macrophages in response to oxidized low-density lipoprotein (oxLDL) or amyloid-beta 42. In this context, the initial signal is provided by oxLDL- or amyloid-beta 42-binding to CD36. This event induces the formation of a heterodimer of TLR4 and TLR6, which is rapidly internalized and triggers inflammatory response, leading to the NF-kappa-B-dependent production of CXCL1, CXCL2 and CCL9 cytokines, via MYD88 signaling pathway, and CCL5 cytokine, via TICAM1 signaling pathway, as well as IL1B secretion. .
- Components
- Each vial contains 4 mg Trehalose, 0.9 mg NaCl, 0.2mg Na2HPO4, 0.05 mg NaN3.
- References & Citations
- 1. Medzhitov, R., Preston-Hurlburt, P., Janeway, C. A., Jr.A human homologue of the Drosophila Toll protein signals activation of adaptive immunity.Nature 388: 394-397, 1997.
2. Park, B. S., Song, D. H., Kim, H. M., Choi, B.-S., Lee, H., Lee, J.-O.The structural basis of lipopolysaccharide recognition by the TLR4-MD-2 complex.Nature 458: 1191-1195, 2009.
3. Rock, F. L., Hardiman, G., Timans, J. C., Kastelein, R. A., Bazan, J. F.A family of human receptors structurally related to Drosophila Toll.Proc. Nat. Acad. Sci. 95: 588-593, 1998.
- Storage Conditions
- Store at -20℃ for one year from date of receipt. After reconstitution, at 4℃ for one month. It can also be aliquotted and stored frozen at -20℃ for six months. Avoid repeated freeze-thaw cycles.
- Calculated Molecular Weight
- 95680 MW
- Observed Molecular Weight
- 80 kDa
- Fragment
- Rabbit IgG
- Specificity
- No cross reactivity with other proteins.
- Applications Notes
- Immunohistochemistry (Paraffin-embedded Section), 0.5-1μg/ml, Human, By Heat<br>Western blot, 0.1-0.5μg/ml, Human<br>
- Subcellular Location
- Cell membrane; Single-pass type I membrane protein. Upon complex formation with CD36 and TLR6, internalized through dynamin-dependent endocytosis. .
- Sequence Similarities
- Belongs to the Toll-like receptor family.
- Protein Name
- Toll-like receptor 4