Description
Cullin 2 Colorimetric Cell-Based ELISA Kit
The Cullin-2 Colorimetric Cell-Based ELISA Kit from Assay Genie is a cutting-edge tool for the precise measurement of Cullin-2 levels in cell lysates. This kit offers top-tier sensitivity and specificity, guaranteeing accurate and consistent results that are suitable for various research purposes.Cullin-2 is a key component of the ubiquitin-proteasome system, playing a vital role in the regulation of protein degradation and cell cycle progression. Dysregulation of Cullin-2 has been linked to various diseases, including cancer and neurological disorders, making it a valuable target for research and potential therapeutic interventions.
With the Assay Genie Cullin-2 Colorimetric Cell-Based ELISA Kit, researchers can delve deeper into the mechanisms underlying Cullin-2 function and its implications in disease pathogenesis. This advanced kit provides a reliable platform for accurate quantification of Cullin-2 levels, facilitating in-depth investigations and contributing to advancements in biomedical science.
| Product Name: | Cullin 2 Colorimetric Cell-Based ELISA Kit |
| Product Code: | CBCAB00606 |
| ELISA Type: | Cell-Based |
| Target: | Cullin 2 |
| Reactivity: | Human, Mouse |
| Dynamic Range: | > 5000 Cells |
| Detection Method: | Colorimetric 450 nmStorage/Stability:4°C/6 Months |
| Format: | 96-Well Microplate |
The Cullin 2 Colorimetric Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can detect Cullin 2 protein expression profile in cells. The kit can be used for measuring the relative amounts of Cullin 2 in cultured cells as well as screening for the effects that various treatments, inhibitors (ie siRNA or chemicals), or activators have on Cullin 2.
Qualitative determination of Cullin 2 concentration is achieved by an indirect ELISA format. In essence, Cullin 2 is captured by Cullin 2-specific primary antibodies while the HRP-conjugated secondary antibodies bind the Fc region of the primary antibody. Through this binding, the HRP enzyme conjugated to the secondary 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: 8453, UniProt ID: Q13617, OMIM: 603135, Unigene: Hs.82919 |
| Gene Symbol: | CUL2 |
| Sub Type: | None |
| UniProt Protein Function: | CUL2: Core component of multiple cullin-RING-based ECS (ElonginB/C-CUL2/5-SOCS-box protein) E3 ubiquitin-protein ligase complexes, which mediate the ubiquitination of target proteins. May serve as a rigid scaffold in the complex and may contribute to catalysis through positioning of the substrate and the ubiquitin- conjugating enzyme. The E3 ubiquitin-protein ligase activity of the complex is dependent on the neddylation of the cullin subunit and is inhibited by the association of the deneddylated cullin subunit with TIP120A/CAND1. The functional specificity of the ECS complex depends on the substrate recognition component. ECS(VHL) mediates the ubiquitination of hypoxia-inducible factor (HIF). Belongs to the cullin family. |
| UniProt Protein Details: | Protein type:Ubiquitin conjugating system; Cell cycle regulation Chromosomal Location of Human Ortholog: 10p11.21 Cellular Component: Cul2-RING ubiquitin ligase complex; nucleoplasm; cytosol Molecular Function:protein binding; ubiquitin protein ligase binding Biological Process: ubiquitin-dependent protein catabolic process; negative regulation of cell proliferation; viral reproduction; protein ubiquitination; cell cycle arrest; G1/S transition of mitotic cell cycle |
| UniProt Code: | Q13617 |
| NCBI GenInfo Identifier: | 19863260 |
| NCBI Gene ID: | 8453 |
| NCBI Accession: | Q13617.2 |
| UniProt Secondary Accession: | Q13617,O00200, Q5T2B6, Q9UNF9, B3KT95, B7Z6K8, D3DRY6 G3V1S2, |
| UniProt Related Accession: | Q13617 |
| Molecular Weight: | 745 |
| NCBI Full Name: | Cullin-2 |
| NCBI Synonym Full Names: | cullin 2 |
| NCBI Official Symbol: | CUL2Â Â |
| NCBI Protein Information: | cullin-2; CUL-2 |
| UniProt Protein Name: | Cullin-2 |
| Protein Family: | Cullin |
| UniProt Gene Name: | CUL2Â Â |
| UniProt Entry Name: | CUL2_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-Cullin 2 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.)
