When T cells encounter antigens via the T cell receptor (TCR), information about the quantity and quality of antigens is relayed to the intracellular signal transduction machinery (1).
This activation process depends mainly on CD3 (Cluster of Differentiation 3), a multiunit protein complex that directly associates with the TCR.
CD3 is composed of four polypeptides: zeta, gamma, epsilon and delta.
Each of these polypeptides contains at least one immunoreceptor tyrosine-based activation motif (ITAM) (2).
Engagement of TCR complex with foreign antigens induces tyrosine phosphorylation in the ITAM motifs and phosphorylated ITAMs function as docking sites for signaling molecules such as ZAP-70 and p85 subunit of PI-3 kinase (3,4).
TCR ligation also induces a conformational change in CD3ε, such that a proline-region is exposed and then associates with the adapter protein Nck (5).
Applications:Suitable for use in Western Blot, Immunohistochemistry, Immunofluorescence/Immunocytochemistry and ELISA.
Other applications not tested.
Recommended Dilution:Western Blot: 1:500-1:2000, incubate membrane with diluted primary antibody in TBS, 5% milk, 0.1% Tween 20 at 4°C with gentle shaking, overnight
Immunohistochemistry: 1:50-1:200Immunofluorescence (IF-IC): 1:100-1:500ELISA (peptide): 1:20,000-1:40,000Optimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4°C for short-term only.
Aliquot to avoid repeated freezing and thawing.
Store at -20°C.
Aliquots are stable for 12 months after receipt.
For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
仕様
Size:100ul
Host:rabbit
Source Antibody:human
Grade:Affinity Purified
Purity:Purified by immunoaffinity chromatography from serum.
Form:Supplied as a liquid in PBS, pH 7.4, 0.02% sodium azide, 50% glycerol.
Specificity:Recognizes endogenous levels of total human CD3E. Species Crossreactivity: Mouse and rat
Isotype:IgG
Calc Applications Abbrev:E IC IF IHC WB
Calc Crossreactivity:Hu Mo Rt
Immunogen:Synthetic peptide corresponding to human CD3E. Species sequence homology: Porcine (100%), Bovine (91%), Equine (91%), Sheep (100%), Rabbit (100%), Canine (91%), Chicken (80%)