Description
CD3 zeta (Phospho-Tyr142)Colorimetric Cell-Based ELISA Kit
The CD3-Zeta Phospho-Tyr142 Colorimetric Cell-Based ELISA Kit is a cutting-edge tool for researchers to accurately measure levels of phosphorylated CD3-Zeta (Tyr142) in cell samples. This kit provides high sensitivity and specificity, ensuring precise and reliable results for a wide range of cellular studies.CD3-Zeta is a key component of the T-cell receptor complex and plays a critical role in signal transduction and T-cell activation. Phosphorylation of CD3-Zeta at Tyr142 is a crucial event in T-cell activation and function, making it an important biomarker for studying immune responses, autoimmune diseases, and cancer immunotherapy.
With the CD3-Zeta Phospho-Tyr142 Colorimetric Cell-Based ELISA Kit, researchers can gain valuable insights into T-cell signaling pathways, immune responses, and potential therapeutic targets. This kit is a valuable tool for advancing research in immunology, oncology, and drug development.
| Product Name: | CD3 zeta (Phospho-Tyr142)Colorimetric Cell-Based ELISA Kit |
| Product Code: | CBCAB01288 |
| ELISA Type: | Cell-Based |
| Target: | CD3 zeta (Phospho-Tyr142) |
| Reactivity: | Human, Mouse, Rat |
| Dynamic Range: | > 5000 Cells |
| Detection Method: | Colorimetric 450 nm |
| Format: | 2 x 96-Well Microplates |
The CD3 zeta (Phospho-Tyr142) Colorimetric Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can detect CD3 zeta protein phosphorylation and expression profile in cells. The kit can be used for measuring the relative amounts of phosphorylated CD3 zeta in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals), or activators have on CD3 zeta phosphorylation.
Qualitative determination of CD3 zeta (Phospho-Tyr142) concentration is achieved by an indirect ELISA format. In essence, CD3 zeta (Phospho-Tyr142) is captured by CD3 zeta (Phospho-Tyr142)-specific primary (1ø) antibodies while the HRP-conjugated secondary (2ø) antibodies bind the Fc region of the 1ø antibody. Through this binding, the HRP enzyme conjugated to the 2ø antibody can catalyze a colorimetric reaction upon substrate addition. Due to the qualitative nature of the Cell-Based ELISA, multiple normalization methods are needed:
| 1. | A monoclonal antibody specific for human GAPDH is included to serve as an internal positive control in normalizing the target absorbance values. |
| 2. | Following the colorimetric measurement of HRP activity via substrate addition, the Crystal Violet whole-cell staining method may be used to determine cell density. After staining, the results can be analysed by normalizing the absorbance values to cell amounts, by which the plating difference can be adjusted. |
| Database Information: | Gene ID: 919, UniProt ID: P20963, OMIM: 186780/610163, Unigene: Hs.156445 |
| Gene Symbol: | CD247 |
| Sub Type: | Phospho |
| UniProt Protein Function: | CD3Z: a T cell surface glycoprotein that is a component of the T cell antigen receptor. Plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways. Low expression of the CD3-epsilon results in impaired immune response. Two alternatively spliced isoforms have been described. |
| UniProt Protein Details: | Protein type:Receptor, misc.; Membrane protein, integral Chromosomal Location of Human Ortholog: 1q24.2 Cellular Component: T cell receptor complex; cytoplasm; plasma membrane; integral to membrane; alpha-beta T cell receptor complex Molecular Function:identical protein binding; protein binding; protein homodimerization activity; transmembrane receptor activity Biological Process: regulation of immune response; viral reproduction; T cell costimulation; innate immune response; T cell receptor signaling pathway; regulation of defense response to virus by virus Disease: Immunodeficiency 25 |
| NCBI Summary: | The protein encoded by this gene is T-cell receptor zeta, which together with T-cell receptor alpha/beta and gamma/delta heterodimers, and with CD3-gamma, -delta and -epsilon, forms the T-cell receptor-CD3 complex. The zeta chain plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways. Low expression of the antigen results in impaired immune response. Two alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jul 2008] |
| UniProt Code: | P20963 |
| NCBI GenInfo Identifier: | 4557431 |
| NCBI Gene ID: | 919 |
| NCBI Accession: | NP_000725.1 |
| UniProt Secondary Accession: | P20963,Q5VX13, Q8TAX4, B1AK49, |
| UniProt Related Accession: | P20963,A46461 |
| Molecular Weight: | 18,696 Da |
| NCBI Full Name: | T-cell surface glycoprotein CD3 zeta chain isoform 2 |
| NCBI Synonym Full Names: | CD247 molecule |
| NCBI Official Symbol: | CD247 |
| NCBI Official Synonym Symbols: | T3Z; CD3H; CD3Q; CD3Z; TCRZ; CD3-ZETA |
| NCBI Protein Information: | T-cell surface glycoprotein CD3 zeta chain; CD3zeta chain; TCR zeta chain; CD247 antigen, zeta subunit; T-cell receptor T3 zeta chain; CD3Z antigen, zeta polypeptide (TiT3 complex); T-cell antigen receptor complex, zeta subunit of CD3 |
| UniProt Protein Name: | T-cell surface glycoprotein CD3 zeta chain |
| UniProt Synonym Protein Names: | T-cell receptor T3 zeta chain |
| UniProt Gene Name: | CD247 |
| UniProt Entry Name: | CD3Z_HUMAN |
| Component | Quantity |
| 96-Well Cell Culture Clear-Bottom Microplate | 2 plates |
| 10X TBS | 24 mL |
| Quenching Buffer | 24 mL |
| Blocking Buffer | 50 mL |
| 15X Wash Buffer | 50 mL |
| Primary Antibody Diluent | 12 mL |
| 100x Anti-Phospho Target Antibody | 60 µL |
| 100x Anti-Target Antibody | 60 µL |
| Anti-GAPDH Antibody | 60 µL |
| HRP-Conjugated Anti-Rabbit IgG Antibody | 12 mL |
| HRP-Conjugated Anti-Mouse IgG Antibody | 12 mL |
| SDS Solution | 12 mL |
| Stop Solution | 24 mL |
| Ready-to-Use Substrate | 12 mL |
| Crystal Violet Solution | 12 mL |
| Adhesive Plate Seals | 2 seals |
The following materials and/or equipment are NOT provided in this kit but are necessary to successfully conduct the experiment:
- Microplate reader able to measure absorbance at 450 nm and/or 595 nm for Crystal Violet Cell Staining (Optional)
- Micropipettes with capability of measuring volumes ranging from 1 µL to 1 ml
- 37% formaldehyde (Sigma Cat# F-8775) or formaldehyde from other sources
- Squirt bottle, manifold dispenser, multichannel pipette reservoir or automated microplate washer
- Graph paper or computer software capable of generating or displaying logarithmic functions
- Absorbent papers or vacuum aspirator
- Test tubes or microfuge tubes capable of storing ≥1 ml
- Poly-L-Lysine (Sigma Cat# P4832 for suspension cells)
- Orbital shaker (optional)
- Deionized or sterile water
*Note: Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.
| Step | Procedure |
| 1. | Seed 200 µL of 20,000 adherent cells in culture medium in each well of a 96-well plate. The plates included in the kit are sterile and treated for cell culture. For suspension cells and loosely attached cells, coat the plates with 100 µL of 10 µg/ml Poly-L-Lysine (not included) to each well of a 96-well plate for 30 minutes at 37 °C prior to adding cells. |
| 2. | Incubate the cells for overnight at 37 °C, 5% CO2. |
| 3. | Treat the cells as desired. |
| 4. | Remove the cell culture medium and rinse with 200 µL of 1x TBS, twice. |
| 5. | Fix the cells by incubating with 100 µL of Fixing Solution for 20 minutes at room temperature. The 4% formaldehyde is used for adherent cells and 8% formaldehyde is used for suspension cells and loosely attached cells. |
| 6. | Remove the Fixing Solution and wash the plate 3 times with 200 µL 1x Wash Buffer for five minutes each time with gentle shaking on the orbital shaker. The plate can be stored at 4 °C for a week. |
| 7. | Add 100 µL of Quenching Buffer and incubate for 20 minutes at room temperature. |
| 8. | Wash the plate 3 times with 1x Wash Buffer for 5 minutes each time. |
| 9. | Add 200 µL of Blocking Buffer and incubate for 1 hour at room temperature. |
| 10. | Wash 3 times with 200 µL of 1x Wash Buffer for 5 minutes each time. |
| 11. | Add 50 µL of 1x primary antibodies Anti-CD3 zeta (Phospho-Tyr142) Antibody, Anti-CD3 zeta Antibody and/or Anti-GAPDH Antibody) to the corresponding wells, cover with Parafilm and incubate for 16 hours (overnight) at 4 °C. If the target expression is known to be high, incubate for 2 hours at room temperature. |
| 12. | Wash 3 times with 200 µL of 1x Wash Buffer for 5 minutes each time. |
| 13. | Add 50 µL of 1x secondary antibodies (HRP-Conjugated AntiRabbit IgG Antibody or HRP-Conjugated Anti-Mouse IgG Antibody) to corresponding wells and incubate for 1.5 hours at room temperature. |
| 14. | Wash 3 times with 200 µL of 1x Wash Buffer for 5 minutes each time. |
| 15. | Add 50 µL of Ready-to-Use Substrate to each well and incubate for 30 minutes at room temperature in the dark. |
| 16. | Add 50 µL of Stop Solution to each well and read OD at 450 nm immediately using the microplate reader. |
(Additional Crystal Violet staining may be performed if desired – details of this may be found in the kit technical manual.)
