Human CellExp™ TLR-3, Human Recombinant

Biomolecule/Target: TLR3

Synonyms: Toll-like receptor 3; CD283 antigen

Alternates names: Toll-like receptor 3; CD283 antigen

Taglines: Promotes the NF-kB pathway to initiate innate and adaptive immune responses

Taglines: USA

Country of Animal Origin: USA

NCBI Gene ID #.: 7098

NCBI Gene Symbol: TLR3

Gene Source: Human

Accession #: O15455

Recombinant: Yes

Source: HEK 293 cells

Purity by SDS-PAGE #: ≥95%

Assay: SDS-PAGE

Purity: N/A

Assay #2: HPLC

Endotoxin Level: < 0.1 ng/μg of protein (<1EU/μg).

Activity (Specifications/test method): Determined by its ability to inhibit IL-8 secretion induced by Poly I:C in the TLR3 receptor-expressing HEK293 cells (HEK293 TLR3r). The ED50 for this effect is ≤ 30 μg/ml in the presence of 100 μg/ml of Poly I:C.

Biological activity: Determined by its ability to inhibit IL-8 secretion induced by Poly I:C in the TLR3 receptor-expressing HEK293 cells (HEK293 TLR3r). The ED50 for this effect is ≤ 30 μg/ml in the presence of 100 μg/ml of Poly I:C.

Results: N/A

Binding Capacity: N/A

Unit Definition: N/A

Molecular Weight: 77.4 kDa

Concentration: N/A

Appearance: Lyophilized powder

Physical form description: Sterile filtered through a 0.2 micron filter. Lyophilized from 20 mM Sodium Phosphate, pH 7.5.

Reconstitution Instructions: Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

Background Information: TLR-3 is a single-pass type I receptor that binds to and signals the presence of microbial pathogens and double stranded RNA (dsRNA) viruses. Signaling through TLR-3 can promote the NF-¬B pathway to initiate innate and adaptive immune responses to bacterial and viral infections, as well as the p53 pathway to trigger apoptosis in cells infected with dsRNA viruses. TLR-3 belongs to a family of structurally-related toll-like receptors (TLRs) containing an N-terminal domain rich in leucine repeats and a C-terminal intracellular Toll/interleukin (IL)-1 (TIL) domain. TLR-3 is expressed primarily in dendritic cells of the placenta and pancreas where it can reside on both sides of the plasma membrane and in the endosomal compartment of the cells. Recombinant human TLR-3 is 77.4 kDa glycoprotein containing 681 residues which comprise the TLR-3 extracellular domain.

Amino acid sequence: STTKCTVSHE VADCSHLKLT QVPDDLPTNI TVLNLTHNQL RRLPAANFTR YSQLTSLDVG FNTISKLEPE LCQKLPMLKV LNLQHNELSQ LSDKTFAFCT NLTELHLMSN SIQKIKNNPF VKQKNLITLD LSHNGLSSTK LGTQVQLENL QELLLSNNKI QALKSEELDI FANSSLKKLE LSSNQIKEFS PGCFHAIGRL FGLFLNNVQL GPSLTEKLCL ELANTSIRNL SLSNSQLSTT SNTTFLGLKW TNLTMLDLSY NNLNVVGNDS FAWLPQLEYF FLEYNNIQHL FSHSLHGLFN VRYLNLKRSF TKQSISLASL PKIDDFSFQW LKCLEHLNME DNDIPGIKSN MFTGLINLKY LSLSNSFTSL RTLTNETFVS LAHSPLHILN LTKNKISKIE SDAFSWLGHL EVLDLGLNEI GQELTGQEWR GLENIFEIYL SYNKYLQLTR NSFALVPSLQ RLMLRRVALK NVDSSPSPFQ PLRNLTILDL SNNNIANIND DMLEGLEKLE ILDLQHNNLA RLWKHANPGG PIYFLKGLSH LHILNLESNG FDEIPVEVFK DLFELKIIDL GLNNLNTLPA SVFNNQVSLK SLNLQKNLIT SVEKKVFGPA FRNLTELDMR FNPFDCTCES IAWFVNWINE THTNIPELSS HYLCNTPPHY HGFPVRLFDT SSCKDSAPFE L

Handling: Centrifuge the vial prior to opening.

Usage: For Research Use Only! Not to be used in humans