Description
EFNB1 (Phospho-Tyr317)Colorimetric Cell-Based ELISA Kit
The EFNb1 (Ephrin-B1) Phospho-Tyr317 Colorimetric Cell-Based ELISA Kit is a powerful tool for the accurate measurement of EFNb1 phosphorylation at the Tyr317 site in cell lysates. This user-friendly kit offers high sensitivity and specificity, providing precise and reliable results for researchers studying signaling pathways involving EFNb1.EFNb1, a member of the Ephrin family of proteins, is known to play a critical role in various cellular processes, including cell adhesion, migration, and differentiation. Phosphorylation at the Tyr317 site is essential for EFNb1-mediated signaling and is implicated in a range of biological functions, making it a key target for investigation in both basic and clinical research.
Whether investigating the role of EFNb1 in developmental biology, cancer biology, or neurobiology, the EFNb1 Phospho-Tyr317 Colorimetric Cell-Based ELISA Kit provides a reliable and efficient method for detecting and quantifying phosphorylated EFNb1 levels in cell samples. This kit is an invaluable resource for researchers seeking to unravel the complex mechanisms underlying EFNb1 signaling and its effects on cell behavior.
| Product Name: | EFNB1 (Phospho-Tyr317)Colorimetric Cell-Based ELISA Kit |
| Product Code: | CBCAB01421 |
| ELISA Type: | Cell-Based |
| Target: | EFNB1 (Phospho-Tyr317) |
| Reactivity: | Human, Mouse, Rat |
| Dynamic Range: | > 5000 Cells |
| Detection Method: | Colorimetric 450 nm |
| Format: | 2 x 96-Well Microplates |
The EFNB1 (Phospho-Tyr317) Colorimetric Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can detect EFNB1 protein phosphorylation and expression profile in cells. The kit can be used for measuring the relative amounts of phosphorylated EFNB1 in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals), or activators have on EFNB1 phosphorylation.
Qualitative determination of EFNB1 (Phospho-Tyr317) concentration is achieved by an indirect ELISA format. In essence, EFNB1 (Phospho-Tyr317) is captured by EFNB1 (Phospho-Tyr317)-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: 1947, UniProt ID: P98172, OMIM: 300035/304110, Unigene: Hs.144700 |
| Gene Symbol: | EFNB1 |
| Sub Type: | Phospho |
| UniProt Protein Function: | EFNB1: a type I membrane protein of the ephrin family. A ligand of Eph-related receptor tyrosine kinases EphB1 and EphA1. Ephrins and ephrin receptors mediate numerous developmental processes, particularly in the nervous system. Ephrin-B1 may play a role in cell adhesion and functions in the development or maintenance of the nervous system. Binding to its receptor induces the collapse of commissural axons/growth cones in vitro. Induced by TNF-alpha. Expressed in brain, heart, placenta, lung, liver, skeletal muscle, kidney, and pancreas. |
| UniProt Protein Details: | Protein type:Membrane protein, integral; Ligand, receptor tyrosine kinase Chromosomal Location of Human Ortholog: Xq12 Cellular Component: integral to plasma membrane; cytoplasm; plasma membrane; synapse; nucleus; lipid raft Molecular Function:protein binding; ephrin receptor binding Biological Process: axon guidance; cell-cell signaling; ephrin receptor signaling pathway; positive regulation of T cell proliferation; cell adhesion; embryonic pattern specification; neural crest cell migration Disease: Craniofrontonasal Syndrome |
| NCBI Summary: | The protein encoded by this gene is a type I membrane protein and a ligand of Eph-related receptor tyrosine kinases. It may play a role in cell adhesion and function in the development or maintenance of the nervous system. [provided by RefSeq, Jul 2008] |
| UniProt Code: | P98172 |
| NCBI GenInfo Identifier: | 1706668 |
| NCBI Gene ID: | 1947 |
| NCBI Accession: | P98172.1 |
| UniProt Secondary Accession: | P98172,D3DVU0, |
| UniProt Related Accession: | P98172 |
| Molecular Weight: | 346 |
| NCBI Full Name: | Ephrin-B1 |
| NCBI Synonym Full Names: | ephrin-B1 |
| NCBI Official Symbol: | EFNB1 |
| NCBI Official Synonym Symbols: | CFND; CFNS; EFB1; EFL3; EPLG2; Elk-L; LERK2 |
| NCBI Protein Information: | ephrin-B1; EFL-3; LERK-2; ELK ligand; ligand of eph-related kinase 2; eph-related receptor tyrosine kinase ligand 2 |
| UniProt Protein Name: | Ephrin-B1 |
| UniProt Synonym Protein Names: | EFL-3; ELK ligand; ELK-L; EPH-related receptor tyrosine kinase ligand 2; LERK-2 |
| Protein Family: | Ephrin |
| UniProt Gene Name: | EFNB1 |
| UniProt Entry Name: | EFNB1_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-EFNB1 (Phospho-Tyr317) Antibody, Anti-EFNB1 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.)
