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Invitrogen
CD282 (TLR2) Monoclonal Antibody (TL2.1), Functional Grade, eBioscience™
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Product Details
16-9922-82
Applications
Tested Dilution
Publications
Product Specifications
Species Reactivity
Human
Published species
C. elegans,
Human,
Mouse
Host/Isotype
Mouse
/ IgG2a, kappa
Recommended Isotype Control
Class
Monoclonal
Type
Antibody
Clone
TL2.1
Conjugate
Form
Liquid
Concentration
1 mg/mL
Purification
Affinity chromatography
Storage buffer
PBS, pH 7.2
Contains
no preservative
Storage conditions
4°C
Shipping conditions
Ambient (domestic); Wet ice (international)
RRID
Product Specific Information
Description: The TL2.1 monoclonal antibody reacts with human Toll-like receptor 2 (TLR2). To date, at least ten members of the Toll family have been identified in human. This family of type I transmembrane proteins is characterized by an extracellular domain with leucine-rich repeats and a cytoplasmic domain with homology to the type I IL-1 receptor. Two of these receptors, TLR2 and TLR4, are pattern recognition receptors and signaling molecules in response to bacterial lipoproteins and have been implicated in innate immunity and inflammation. TLR2 is expressed by peripheral blood monocytes and is responsible for distinguishing different pathogens. TL2.1, a blocking antibody, has been used to study the role of TLR-2 as a pattern recognition receptor in microbial lipoprotein/lipopeptide induced cytokine production from human peripheral blood mononuclear cells. TL2.1 has been reported to immunoprecipitate human TLR2 (~90 kDa) from PBMC and HMEC.
Applications Reported: TL2.1 has been reported for use in flow cytometric analysis and blocking of TLR2-mediated cytokine production. Inhibition of cytokine production has been reported in the literature using Listeria monocytogenes and peptidoglycans. Optimal conditions for the inhibition assays using TL2.1 and specific stimulatory reagents/suppliers have to be evaluated by individual investigators. Neutralization Protocol: (Important note: make sure to eliminate LPS contamination in the culture system) 1) Prepare target cells of interest at the concentration of 2 x 10^6 /mL in 10% FBS-IMDM (or 5% human serum). 2) Pre-incubate the cells with 10-20 µg/mL of TL2.1 or isotype control antibody at room temperature for 30min. 3) Add the stimuli and incubate at 37°C, 5% CO2 for 14 hours. Harvest the supernatants. 4) Follow the protocol of eBioscience Ready-SET-Go ELISA set to detect IL-6 or TNF alpha production.
Applications Tested: The TL2.1 antibody has been tested by flow cytometric analysis of normal human peripheral blood cells. This can be used at less than or equal to 1 µg per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.
Storage and handling: Use in a sterile environment.
Filtration: 0.2 µm post-manufacturing filtered.
Purity: Greater than 90%, as determined by SDS-PAGE.
Endotoxin Level: Less than 0.001 ng/µg antibody, as determined by LAL assay.
Aggregation: Less than 10%, as determined by HPLC.
Target Information
TLR2 is a member of the Toll-like receptor (TLR) family which play a fundamental role in pathogen recognition and activation of innate immunity. TLR proteins act through adaptor molecules such as MyD88 and TIRAP to activate various kinases and transcription factors such as Protein Kinase C (PKC) alpha/beta and NF-kappa-B. TLR2 can form heterodimers with either TLR1 or TLR6, and as a heterodimer, can recognize a variety of bacterial and mycoplasma lipoproteins respectively. TLRs are highly conserved from Drosophila to humans and share structural and functional similarities. The various TLRs exhibit different patterns of expression. TLR2 is expressed most abundantly in peripheral blood leukocytes, and mediates host response to Gram-positive bacteria and yeast via stimulation of NF-kappaB. TLR2 aids in the recognition of pathogen-associated molecular patterns (PAMPs) that are expressed on infectious agents, and mediate the production of cytokines necessary for the development of effective immunity. Ten human homologs of TLRs (TLR1-10) have been described. TLR2 is expressed in human cells such as tonsils, microglia, lymph nodes, and appendices, activated B-cells in germinal centers. CD14+ monocytes express the highest level of TLR2 followed by CD15+ granulocytes, CD19+ B-cells, and CD3+ T-cells. The expression of TLR2 on different cell types are regulated by different immune response modifiers. For example, LPS, GM-CSF, IL-1, and IL-10 up regulates TLR2 whereas IL-4, IFN-gamma, and TNF down regulate TLR2 expression in monocytes.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Bioinformatics
Protein Aliases: CD282; TLR-2; Toll-like receptor 2; Toll/interleukin-1 receptor-like protein 4
Gene Aliases: CD282; TIL4; TLR2
UniProt ID: (Human) O60603
Entrez Gene ID: (Human) 7097
lipopolysaccharide binding
lipopolysaccharide receptor activity
receptor activity
transmembrane signaling receptor activity
protein binding
signaling pattern recognition receptor activity
Toll-like receptor binding
triacyl lipopeptide binding
peptidoglycan binding
protein heterodimerization activity
cytokine secretion involved in immune response
MyD88-dependent toll-like receptor signaling pathway
apoptotic process
inflammatory response
immune response
signal transduction
I-kappaB phosphorylation
positive regulation of gene expression
positive regulation of Wnt signaling pathway
lipopolysaccharide-mediated signaling pathway
interleukin-10 production
positive regulation of chemokine production
positive regulation of interferon-beta production
positive regulation of interleukin-12 production
positive regulation of interleukin-18 production
positive regulation of interleukin-6 production
positive regulation of interleukin-8 production
positive regulation of tumor necrosis factor production
positive regulation of toll-like receptor signaling pathway
toll-like receptor 2 signaling pathway
toll-like receptor TLR1:TLR2 signaling pathway
toll-like receptor TLR6:TLR2 signaling pathway
positive regulation of NF-kappaB import into nucleus
detection of triacyl bacterial lipopeptide
detection of diacyl bacterial lipopeptide
innate immune response
positive regulation of transcription from RNA polymerase II promoter
regulation of cytokine secretion
positive regulation of inflammatory response
defense response to Gram-positive bacterium
positive regulation of NF-kappaB transcription factor activity
positive regulation of nitric-oxide synthase biosynthetic process
cellular response to bacterial lipopeptide
cellular response to lipoteichoic acid
cellular response to diacyl bacterial lipopeptide
cellular response to triacyl bacterial lipopeptide
Performance Guarantee
If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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