- Catalog number
- EK0976
- Size / count
- 96 Well With Removable Strips
- Dry ice
- No
- Hazardous
- No
- Discontinued
- No
- Background
- Angiopoietin-1 receptor, also called TEK or TIE2 is a protein that in humans is encoded by the TEK gene. This gene is mapped to 9p21.2. The TEK receptor tyrosine kinase is expressed almost exclusively in endothelial cells in mice, rats, and humans. This receptor possesses a unique extracellular domain containing 2 immunoglobulin-like loops separated by 3 epidermal growth factor-like repeats that are connected to 3 fibronectin type III-like repeats. The ligand for the receptor is angiopoietin-1. Defects in TEK are associated with inherited venous malformations, the TEK signaling pathway appears to be critical for endothelial cell-smooth muscle cell communication in venous morphogenesis. TEK is closely related to the TIE receptor tyrosine kinase.
- Reproducibility
- Lots Lot 1 (pg/ml) Lot 2 (pg/ml) Lot 3 (pg/ml) Lot 4 (pg/ml) Mean (pg/ml) Standard Deviation CV (%) Sample 1 158 174 173 164 167 6.6 3.9% Sample 2 1232 1223 1255 1137 1211 44.7 3.6% Sample 3 4836 4677 4895 5026 4858 125.33 2.5% Lots Lot 1 (pg/ml) Lot 2 (pg/ml) Lot 3 (pg/ml) Lot 4 (pg/ml) Mean (pg/ml) Standard Deviation CV (%) Lots Lot 1 (pg/ml) Lot 2 (pg/ml) Lot 3 (pg/ml) Lot 4 (pg/ml) Mean (pg/ml) Standard Deviation CV (%) Sample 1 158 174 173 164 167 6.6 3.9% Sample 1 158 174 173 164 167 6.6 3.9% Sample 2 1232 1223 1255 1137 1211 44.7 3.6% Sample 2 1232 1223 1255 1137 1211 44.7 3.6% Sample 3 4836 4677 4895 5026 4858 125.33 2.5% Sample 3 4836 4677 4895 5026 4858 125.33 2.5%
- Synonyms
- Angiopoietin-1 receptor;2.7.10.1; Endothelial tyrosine kinase; HYK; STK1; Tunica interna endothelial cell kinase; Tyrosine kinase with Ig and EGF homology domains-2; Tyrosine-protein kinase receptor TEK; Tyrosine-protein kinase receptor TIE-2; mTIE2; p140 TEK; CD202b; Tek; Hyk, Tie-2, Tie2
- Gene Name
- TEK
- Gene ID
- 21687
- UniProt
- Q02858
- Reactivity
- Mouse
- Cross Reactivity
- There is no detectable cross-reactivity with other relevant proteins.
- Immunogen
- Expression system for standard: NS0; Immunogen sequence: A23-K744
- Capture Antibody
- Monoclonal antibody from rat
- Detection Antibody
- Polyclonal antibody from goat
- Tissue Specificity
- Specifically expressed in developing vascular endothelial cells. Abundantly expressed in lung and heart, moderately in brain, liver and kidney, and weakly in thymus, spleen and testis. .
- Applications
- ELISA
- Field of Research
- Angiogenesis, Cancer, Cardiovascular, Developmental Biology, Oncoproteins, Oncoproteins/Suppressors, Organogenesis, Protein Phosphorylation, Receptor Tyrosine Kinases, Signal Transduction, Stem Cells, Tyrosine Kinases, Vasculature
- Standard
- 10 ng/Tube
- Sample Type
- Cell culture supernatants, serum and plasma (heparin, EDTA) .
- Detection Range
- 125 pg/mL - 8,000 pg/mL
- Precision
- Intra-Assay Precision Inter-Assay Precision Sample 1 2 3 1 2 3 n 16 16 16 24 24 24 Mean (pg/ml) 158 1232 4836 145 1295 4385 Standard deviation 7.9 66.52 203.11 7.97 90.65 210.48 CV (%) 5% 5.4% 4.2% 5.5% 7% 4.8% Intra-Assay Precision Inter-Assay Precision Sample 1 2 3 1 2 3 n 16 16 16 24 24 24 Mean (pg/ml) 158 1232 4836 145 1295 4385 Standard deviation 7.9 66.52 203.11 7.97 90.65 210.48 CV (%) 5% 5.4% 4.2% 5.5% 7% 4.8% Intra-Assay Precision Inter-Assay Precision Intra-Assay Precision Inter-Assay Precision Sample 1 2 3 1 2 3 Sample 1 2 3 1 2 3 n 16 16 16 24 24 24 n 16 16 16 24 24 24 Mean (pg/ml) 158 1232 4836 145 1295 4385 Mean (pg/ml) 158 1232 4836 145 1295 4385 Standard deviation 7.9 66.52 203.11 7.97 90.65 210.48 Standard deviation 7.9 66.52 203.11 7.97 90.65 210.48 CV (%) 5% 5.4% 4.2% 5.5% 7% 4.8% CV (%) 5% 5.4% 4.2% 5.5% 7% 4.8%
- Sensitivity
- <10 pg/mL
- Function
- Tyrosine-protein kinase that acts as cell-surface receptor for ANGPT1, ANGPT2 and ANGPT4 and regulates angiogenesis, endothelial cell survival, proliferation, migration, adhesion and cell spreading, reorganization of the actin cytoskeleton, but also maintenance of vascular quiescence. Has anti-inflammatory effects by preventing the leakage of proinflammatory plasma proteins and leukocytes from blood vessels. Required for normal angiogenesis and heart development during embryogenesis. Required for post- natal hematopoiesis. After birth, activates or inhibits angiogenesis, depending on the context. Inhibits angiogenesis and promotes vascular stability in quiescent vessels, where endothelial cells have tight contacts. In quiescent vessels, ANGPT1 oligomers recruit TEK to cell-cell contacts, forming complexes with TEK molecules from adjoining cells, and this leads to preferential activation of phosphatidylinositol 3-kinase and the AKT1 signaling cascades. In migrating endothelial cells that lack cell-cell adhesions, ANGT1 recruits TEK to contacts with the extracellular matrix, leading to the formation of focal adhesion complexes, activation of PTK2/FAK and of the downstream kinases MAPK1/ERK2 and MAPK3/ERK1, and ultimately to the stimulation of sprouting angiogenesis. ANGPT1 signaling triggers receptor dimerization and autophosphorylation at specific tyrosine residues that then serve as binding sites for scaffold proteins and effectors. Signaling is modulated by ANGPT2 that has lower affinity for TEK, can promote TEK autophosphorylation in the absence of ANGPT1, but inhibits ANGPT1-mediated signaling by competing for the same binding site. Signaling is also modulated by formation of heterodimers with TIE1, and by proteolytic processing that gives rise to a soluble TEK extracellular domain. The soluble extracellular domain modulates signaling by functioning as decoy receptor for angiopoietins. TEK phosphorylates DOK2, GRB7, GRB14, PIK3R1, SHC1 and TIE1. .
- Components
- Description|Quantity Pre-coated 96-well strip microplate|1 Standard|2 vials Biotinylated antibody (100x) |100ul Avidin-Biotin-Peroxidase Complex (100x) |100ul Sample Diluent|30ml Antibody Diluent|12ml Avidin-Biotin-Peroxidase Diluent|12ml Color Developing Reagent (TMB) |10ml Stop Solution|10ml Wash Buffer (25x) |20ml Adhesive plate sealers|4
- Storage Conditions
- Store at 4°C for 6 months, at -20°C for 12 months. Avoid multiple freeze-thaw cycles (Ships with gel ice, can store for up to 3 days in room temperature. Freeze upon receiving.)
- Calculated Molecular Weight
- 125701 MW
- Specificity
- Natural and recombinant mouse TEK
- Anticoagulant
- Heparin or EDTA
- Gene Name Synonym
- Angiopoietin-1 receptor
- Subcellular Location
- Cell membrane; Single-pass type I membrane protein. Cell junction . Cell junction, focal adhesion . Cytoplasm, cytoskeleton . Secreted . Recruited to cell-cell contacts in quiescent endothelial cells. Colocalizes with the actin cytoskeleton and at actin stress fibers during cell spreading. Recruited to the lower surface of migrating cells, especially the rear end of the cell. Proteolytic processing gives rise to a soluble extracellular domain that is secreted (By similarity) . .
- Sequence Similarities
- Belongs to the protein kinase superfamily. Tyr protein kinase family. Tie subfamily.
- Protein Name
- Angiopoietin-1 receptor
- Sample Data
- Concentration (pg/ml) 0 125 250 500 1000 2000 4000 8000 O.D. 0.019 0.103 0.165 0.28 0.501 0.908 1.472 2.188 Concentration (pg/ml) 0 125 250 500 1000 2000 4000 8000 O.D. 0.019 0.103 0.165 0.28 0.501 0.908 1.472 2.188 Concentration (pg/ml) 0 125 250 500 1000 2000 4000 8000 Concentration (pg/ml) 0 125 250 500 1000 2000 4000 8000 O.D. 0.019 0.103 0.165 0.28 0.501 0.908 1.472 2.188 O.D. 0.019 0.103 0.165 0.28 0.501 0.908 1.472 2.188
- Material Required But Not Provided
- Microplate Reader capable of reading absorbance at 450nm. Incubator. Automated plate washer (optional) . Pipettes and pipette tips capable of precisely dispensing 0.5 μl through 1 ml volumes of aqueous solutions. Multichannel pipettes are recommended for large amount of samples. Deionized or distilled water. 500ml graduated cylinders. Test tubes for dilution.
