Description
SP2 Colorimetric Cell-Based ELISA
The SP2 Colorimetric Cell-Based ELISA Kit is a state-of-the-art assay designed for the accurate detection of specific proteins in cell culture supernatants. This kit offers high sensitivity and specificity, providing reliable and reproducible results for a wide range of research applications.The SP2 Colorimetric Cell-Based ELISA Kit utilizes colorimetric detection to measure protein levels within cell cultures, making it an essential tool for studying cell signaling pathways, protein expression, and drug efficacy.
With its user-friendly protocol and high-performance capabilities, this kit is suitable for researchers looking to streamline their experiments and obtain accurate data.Designed for the modern lab setting, the SP2 Colorimetric Cell-Based ELISA Kit offers unmatched convenience and efficiency, allowing researchers to conduct experiments with ease and confidence. Upgrade your cell-based assays with this innovative kit and take your research to the next level.
| Product Name: | SP2 Colorimetric Cell-Based ELISA |
| Product Code: | CBCAB01059 |
| ELISA Type: | Cell-Based |
| Target: | SP2 |
| Reactivity: | Human, Mouse |
| Dynamic Range: | > 5000 Cells |
| Detection Method: | Colorimetric 450 nmStorage/Stability:4°C/6 Months |
| Format: | 96-Well Microplate |
The SP2 Colorimetric Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can detect SP2 protein expression profile in cells. The kit can be used for measuring the relative amounts of SP2 in cultured cells as well as screening for the effects that various treatments, inhibitors (ie siRNA or chemicals), or activators have on SP2.
Qualitative determination of SP2 concentration is achieved by an indirect ELISA format. In essence, SP2 is captured by SP2-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: 6668, UniProt ID: Q02086, OMIM: 601801, Unigene: Hs.514276 |
| Gene Symbol: | SP2 |
| Sub Type: | None |
| UniProt Protein Function: | SP2: Binds to GC box promoters elements and selectively activates mRNA synthesis from genes that contain functional recognition sites. Belongs to the Sp1 C2H2-type zinc-finger protein family. 2 isoforms of the human protein are produced by alternative splicing. |
| UniProt Protein Details: | Protein type:DNA-binding; Transcription factor; C2H2-type zinc finger protein Chromosomal Location of Human Ortholog: 17q21.32 Cellular Component: nucleus Molecular Function:histone deacetylase binding; protein binding Biological Process: immune response; regulation of transcription from RNA polymerase II promoter |
| NCBI Summary: | This gene encodes a member of the Sp subfamily of Sp/XKLF transcription factors. Sp family proteins are sequence-specific DNA-binding proteins characterized by an amino-terminal trans-activation domain and three carboxy-terminal zinc finger motifs. This protein contains the least conserved DNA-binding domain within the Sp subfamily of proteins, and its DNA sequence specificity differs from the other Sp proteins. It localizes primarily within subnuclear foci associated with the nuclear matrix, and can activate or in some cases repress expression from different promoters. [provided by RefSeq, Jul 2008] |
| UniProt Code: | Q02086 |
| NCBI GenInfo Identifier: | 119370531 |
| NCBI Gene ID: | 6668 |
| NCBI Accession: | Q02086.3 |
| UniProt Secondary Accession: | Q02086,A6NK74, |
| UniProt Related Accession: | Q02086 |
| Molecular Weight: | 64,153 Da |
| NCBI Full Name: | Transcription factor Sp2 |
| NCBI Synonym Full Names: | Sp2 transcription factor |
| NCBI Official Symbol: | SP2Â Â |
| NCBI Protein Information: | transcription factor Sp2 |
| UniProt Protein Name: | Transcription factor Sp2 |
| Protein Family: | Sex-specific storage-protein |
| UniProt Gene Name: | SP2Â Â |
| UniProt Entry Name: | SP2_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-SP2 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.)
