Human CSNK2B (Casein Kinase 2, beta) ELISA Kit (HUES03468)
- SKU:
- HUES03468
- Product type:
- ELISA Kit
- Reactivity:
- Human
- ELISA Type:
- Sandwich
Description
| Assay type: | Sandwich |
| Format: | 96T |
| Assay time: | 4.5h |
| Reactivity: | Human |
| Detection Method: | Colormetric |
| Detection Range: | 0.16-10 ng/mL |
| Sensitivity: | 0.10 ng/mL |
| Sample Volume Required Per Well: | 100µL |
| Sample Type: | Serum, plasma and other biological fluids |
| Specificity: | This kit recognizes Human CSNK2B in samples. No significant cross-reactivity or interference between Human CSNK2B and analogues was observed. |
This ELISA kit uses Sandwich-ELISA as the method. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to Human CSNK2B. Standards or samples are added to the appropriate micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human CSNK2B and Avidin-Horseradish Peroxidase (HRP) conjugate are added to each micro plate well successively and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain Human CSNK2B, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by adding Stop Solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The OD value is proportional to the concentration of Human CSNK2B. The concentration of Human CSNK2B in samples can be calculated by comparing the OD of the samples to the standard curve.
| UniProt Protein Function: | CK2B: a regulatory subunit of the casein kinase 2 holoenzyme. Exists as a tetramer composed of two catalytic subunits, alpha and alpha-prime, and two regulatory beta subunits. The beta subunits undergo autophosphorylation. Plays a complex role in regulating the basal catalytic activity of the alpha subunit. Participates in Wnt signaling |
| UniProt Protein Details: | Protein type:Protein kinase, regulatory subunit Chromosomal Location of Human Ortholog: 6p21. 3 Cellular Component: cytoplasm; cytosol; nucleoplasm; nucleus; PcG protein complex; plasma membrane Molecular Function:chromatin binding; identical protein binding; protein binding; protein domain specific binding; protein serine/threonine kinase activity; receptor binding; transcription factor binding Biological Process: adiponectin-mediated signaling pathway; negative regulation of blood vessel endothelial cell migration; negative regulation of cell proliferation; positive regulation of activin receptor signaling pathway; protein folding; signal transduction |
| NCBI Summary: | This gene encodes the beta subunit of casein kinase II, a ubiquitous protein kinase which regulates metabolic pathways, signal transduction, transcription, translation, and replication. The enzyme is composed of three subunits, alpha, alpha prime and beta, which form a tetrameric holoenzyme. The alpha and alpha prime subunits are catalytic, while the beta subunit serves regulatory functions. The enzyme localizes to the endoplasmic reticulum and the Golgi apparatus. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2013] |
| UniProt Code: | P67870 |
| NCBI GenInfo Identifier: | 54037520 |
| NCBI Gene ID: | 1460 |
| NCBI Accession: | P67870. 1 |
| UniProt Secondary Accession: | P67870,P07312, P13862, Q4VX47, B0UXA9, |
| UniProt Related Accession: | P67870 |
| Molecular Weight: | 24,942 Da |
| NCBI Full Name: | Casein kinase II subunit beta |
| NCBI Synonym Full Names: | casein kinase 2 beta |
| NCBI Official Symbol: | CSNK2B |
| NCBI Official Synonym Symbols: | G5A; CK2B; CK2N; CSK2B |
| NCBI Protein Information: | casein kinase II subunit beta |
| UniProt Protein Name: | Casein kinase II subunit beta |
| UniProt Synonym Protein Names: | Phosvitin; Protein G5a |
| UniProt Gene Name: | CSNK2B |
| UniProt Entry Name: | CSK2B_HUMAN |
As the OD values of the standard curve may vary according to the conditions of the actual assay performance (e. g. operator, pipetting technique, washing technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data is provided below for reference only.
| Concentration (ng/mL) | O.D | Average | Corrected |
| 10 | 2.365 2.391 | 2.378 | 2.301 |
| 5 | 1.535 1.563 | 1.549 | 1.472 |
| 2.5 | 0.895 0.871 | 0.883 | 0.806 |
| 1.25 | 0.487 0.501 | 0.494 | 0.417 |
| 0.63 | 0.253 0.245 | 0.249 | 0.172 |
| 0.32 | 0.175 0.171 | 0.173 | 0.096 |
| 0.16 | 0.118 0.136 | 0.127 | 0.05 |
| 0 | 0.07 0.084 | 0.077 | -- |
Precision
Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level Human CSNK2B were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Human CSNK2B were tested on 3 different plates, 20 replicates in each plate.
| Intra-assay Precision | Inter-assay Precision | |||||
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 20 | 20 | 20 | 20 | 20 | 20 |
| Mean (ng/mL) | 0.55 | 0.99 | 3.53 | 0.58 | 1.02 | 3.74 |
| Standard deviation | 0.03 | 0.06 | 0.14 | 0.03 | 0.05 | 0.19 |
| C V (%) | 5.45 | 6.06 | 3.97 | 5.17 | 4.90 | 5.08 |
Recovery
The recovery of Human CSNK2B spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.
| Sample Type | Range (%) | Average Recovery (%) |
| Serum (n=5) | 88-103 | 95 |
| EDTA plasma (n=5) | 88-102 | 94 |
| Cell culture media (n=5) | 96-109 | 101 |
Linearity
Samples were spiked with high concentrations of Human CSNK2B and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
| 1:2 | Range (%) | 95-110 | 95-106 | 93-108 |
| Average (%) | 103 | 100 | 99 | |
| 1:4 | Range (%) | 90-102 | 80-93 | 88-101 |
| Average (%) | 95 | 86 | 93 | |
| 1:8 | Range (%) | 90-104 | 81-94 | 86-98 |
| Average (%) | 95 | 86 | 92 | |
| 1:16 | Range (%) | 92-107 | 86-99 | 84-99 |
| Average (%) | 99 | 93 | 91 |
An unopened kit can be stored at 4°C for 1 month. If the kit is not used within 1 month, store the items separately according to the following conditions once the kit is received.
| Item | Specifications | Storage |
| Micro ELISA Plate(Dismountable) | 8 wells ×12 strips | -20°C, 6 months |
| Reference Standard | 2 vials | |
| Concentrated Biotinylated Detection Ab (100×) | 1 vial, 120 µL | |
| Concentrated HRP Conjugate (100×) | 1 vial, 120 µL | -20°C(shading light), 6 months |
| Reference Standard & Sample Diluent | 1 vial, 20 mL | 4°C, 6 months |
| Biotinylated Detection Ab Diluent | 1 vial, 14 mL | |
| HRP Conjugate Diluent | 1 vial, 14 mL | |
| Concentrated Wash Buffer (25×) | 1 vial, 30 mL | |
| Substrate Reagent | 1 vial, 10 mL | 4°C(shading light) |
| Stop Solution | 1 vial, 10 mL | 4°C |
| Plate Sealer | 5 pieces | |
| Product Description | 1 copy | |
| Certificate of Analysis | 1 copy |
- Set standard, test sample and control (zero) wells on the pre-coated plate and record theirpositions. It is recommended to measure each standard and sample in duplicate. Note: addall solutions to the bottom of the plate wells while avoiding contact with the well walls. Ensuresolutions do not foam when adding to the wells.
- Aliquot 100µl of standard solutions into the standard wells.
- Add 100µl of Sample / Standard dilution buffer into the control (zero) well.
- Add 100µl of properly diluted sample (serum, plasma, tissue homogenates and otherbiological fluids) into test sample wells.
- Cover the plate with the sealer provided in the kit and incubate for 90 min at 37°C.
- Aspirate the liquid from each well, do not wash. Immediately add 100µL of BiotinylatedDetection Ab working solution to each well. Cover the plate with a plate seal and gently mix. Incubate for 1 hour at 37°C.
- Aspirate or decant the solution from the plate and add 350µL of wash buffer to each welland incubate for 1-2 minutes at room temperature. Aspirate the solution from each well andclap the plate on absorbent filter paper to dry. Repeat this process 3 times. Note: a microplatewasher can be used in this step and other wash steps.
- Add 100µL of HRP Conjugate working solution to each well. Cover with a plate seal andincubate for 30 min at 37°C.
- Aspirate or decant the solution from each well. Repeat the wash process for five times asconducted in step 7.
- Add 90µL of Substrate Reagent to each well. Cover with a new plate seal and incubate forapproximately 15 min at 37°C. Protect the plate from light. Note: the reaction time can beshortened or extended according to the actual color change, but not by more than 30min.
- Add 50 µL of Stop Solution to each well. Note: Adding the stop solution should be done inthe same order as the substrate solution.
- Determine the optical density (OD value) of each well immediately with a microplate readerset at 450 nm.
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