Human CDK5R1 / Cyclin-dependent kinase 5 activator 1 ELISA Kit
- SKU:
- HUFI01459
- Product Type:
- ELISA Kit
- Size:
- 96 Assays
- Uniprot:
- Q15078
- Sensitivity:
- 0.094ng/ml
- Range:
- 0.156-10ng/ml
- ELISA Type:
- Sandwich
- Synonyms:
- CDK5R1, Cyclin-dependent kinase 5 activator 1, CDK5 activator 1, Cyclin-dependent kinase 5 regulatory subunit 1, TPKII regulatory subunit, CDK5R, NCK5A
- Reactivity:
- Human
- Research Area:
- Cell Biology
Description
Human CDK5R1 / Cyclin-dependent kinase 5 activator 1 ELISA Kit
CDK5R1 / Cyclin-dependent kinase 5 activator 1 is a neuron-specific activator of CDK5, which is required for proper development of the central nervous system. CDK5R1 / Cyclin-dependent kinase 5 activator 1 is proteolytically cleaved by calpain, which results in relocalization of the protein from the cell periphery to nuclear and perinuclear regions. Accumulation of CDK5R1 / Cyclin-dependent kinase 5 activator 1 correlates with an increase in CDK5 kinase activity, and may lead to aberrantly phosphorylated forms of the microtubule-associated protein tau, which contributes to Alzheimer's disease.
| Product Name: | Human CDK5R1 / Cyclin-dependent kinase 5 activator 1 ELISA Kit |
| Product Code: | HUFI01459 |
| Size: | 96 Assays |
| Alias: | CDK5R1, Cyclin-dependent kinase 5 activator 1, CDK5 activator 1, Cyclin-dependent kinase 5 regulatory subunit 1, TPKII regulatory subunit, CDK5R, NCK5A |
| Detection method: | Sandwich ELISA, Double Antibody |
| Application: | This immunoassay kit allows for the in vitro quantitative determination of Human CDK5R1 concentrations in serum plasma and other biological fluids. |
| Sensitivity: | 0.094ng/ml |
| Range: | 0.156-10ng/ml |
| Storage: | 4°C for 6 months |
| Note: | For Research Use Only |
| Recovery: | Matrices listed below were spiked with certain level of Human CDK5R1 and the recovery rates were calculated by comparing the measured value to the expected amount of Human CDK5R1 in samples. | ||||||||||||||||
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| Linearity: | The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human CDK5R1 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected. | ||||||||||||||||
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| CV(%): | Intra-Assay: CV<8% Inter-Assay: CV<10% |
| Component | Quantity | Storage |
| ELISA Microplate (Dismountable) | 8×12 strips | 4°C for 6 months |
| Lyophilized Standard | 2 | 4°C/-20°C |
| Sample/Standard Dilution Buffer | 20ml | 4°C |
| Biotin-labeled Antibody(Concentrated) | 120ul | 4°C (Protect from light) |
| Antibody Dilution Buffer | 10ml | 4°C |
| HRP-Streptavidin Conjugate(SABC) | 120ul | 4°C (Protect from light) |
| SABC Dilution Buffer | 10ml | 4°C |
| TMB Substrate | 10ml | 4°C (Protect from light) |
| Stop Solution | 10ml | 4°C |
| Wash Buffer(25X) | 30ml | 4°C |
| Plate Sealer | 5 | - |
Other materials and equipment required:
- Microplate reader with 450 nm wavelength filter
- Multichannel Pipette, Pipette, microcentrifuge tubes and disposable pipette tips
- Incubator
- Deionized or distilled water
- Absorbent paper
- Buffer resevoir
| Uniprot | Q15078 |
| UniProt Protein Function: | CDK5R1: activator of cyclin-dependent kinase 5 (CDK5). Required for proper development of the central nervous system. The p35 form of this protein is cleaved by calpain, generating a p25 form, resulting in the prolonged activation and relocalization of the CDK5 from the cell periphery to nuclear and perinuclear regions. The p25 form accumulates in the brain neurons of patients with Alzheimer's disease, leading to aberrantly phosphorylated forms of the microtubule-associated protein tau, which contributes to Alzheimer's disease. |
| UniProt Protein Details: | Protein type:Protein kinase, regulatory subunit Chromosomal Location of Human Ortholog: 17q11.2 Cellular Component: cyclin-dependent protein kinase 5 activator complex; contractile fiber; intracellular membrane-bound organelle; dendrite; postsynaptic density; dendritic spine; cytosol; nucleoplasm; growth cone; membrane; cell soma; perinuclear region of cytoplasm; axon; cytoplasm; plasma membrane; nucleus; neuromuscular junction Molecular Function:protein serine/threonine kinase activator activity; protein binding; ephrin receptor binding; cadherin binding; cyclin-dependent protein kinase activity; cyclin-dependent protein kinase 5 activator activity; kinase activity; calcium ion binding; protein kinase binding; protein kinase activity Biological Process: superior olivary nucleus maturation; axon guidance; acetylcholine receptor signaling, muscarinic pathway; regulation of neuron differentiation; hippocampus development; axonal fasciculation; peptidyl-threonine phosphorylation; rhythmic process; neuron migration; negative regulation of axon extension; neuron differentiation; cell proliferation; embryonic development; peptidyl-serine phosphorylation; ionotropic glutamate receptor signaling pathway; positive regulation of neuron apoptosis; regulation of actin cytoskeleton organization and biogenesis; ephrin receptor signaling pathway; cerebellum development; neuron adhesion; brain development; regulation of cyclin-dependent protein kinase activity; negative regulation of transcription, DNA-dependent; neurite development; layer formation in the cerebral cortex; serine phosphorylation of STAT3 protein |
| NCBI Summary: | The protein encoded by this gene (p35) is a neuron-specific activator of cyclin-dependent kinase 5 (CDK5); the activation of CDK5 is required for proper development of the central nervous system. The p35 form of this protein is proteolytically cleaved by calpain, generating a p25 form. The cleavage of p35 into p25 results in relocalization of the protein from the cell periphery to nuclear and perinuclear regions. P25 deregulates CDK5 activity by prolonging its activation and changing its cellular location. The p25 form accumulates in the brain neurons of patients with Alzheimer's disease. This accumulation correlates with an increase in CDK5 kinase activity, and may lead to aberrantly phosphorylated forms of the microtubule-associated protein tau, which contributes to Alzheimer's disease. [provided by RefSeq, Jul 2008] |
| UniProt Code: | Q15078 |
| NCBI GenInfo Identifier: | 2498217 |
| NCBI Gene ID: | 8851 |
| NCBI Accession: | Q15078.1 |
| UniProt Secondary Accession: | Q15078,Q5U0G3, E1P664, |
| UniProt Related Accession: | Q15078 |
| Molecular Weight: | 307 |
| NCBI Full Name: | Cyclin-dependent kinase 5 activator 1 |
| NCBI Synonym Full Names: | cyclin-dependent kinase 5, regulatory subunit 1 (p35) |
| NCBI Official Symbol: | CDK5R1 |
| NCBI Official Synonym Symbols: | p23; p25; p35; CDK5R; NCK5A; CDK5P35; p35nck5a |
| NCBI Protein Information: | cyclin-dependent kinase 5 activator 1; CDK5 activator 1; neuronal CDK5 activator; TPKII regulatory subunit; regulatory partner for CDK5 kinase; tau protein kinase II 23kDa subunit; cyclin-dependent kinase 5 regulatory subunit 1 |
| UniProt Protein Name: | Cyclin-dependent kinase 5 activator 1 |
| UniProt Synonym Protein Names: | Cyclin-dependent kinase 5 regulatory subunit 1; TPKII regulatory subunitCleaved into the following 2 chains:Cyclin-dependent kinase 5 activator 1, p35; p35; Cyclin-dependent kinase 5 activator 1, p25; p25Alternative name(s):Tau protein kinase II 23 kDa subunit; p23 |
| Protein Family: | Cyclin-dependent kinase 5 activator |
| UniProt Gene Name: | CDK5R1 |
| UniProt Entry Name: | CD5R1_HUMAN |
*Note: Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.
Before adding to wells, equilibrate the SABC working solution and TMB substrate for at least 30 min at 37°C. When diluting samples and reagents, they must be mixed completely and evenly. It is recommended to plot a standard curve for each test.
| Step | Protocol |
| 1. | Set standard, test sample and control (zero) wells on the pre-coated plate respectively, and then, record their positions. It is recommended to measure each standard and sample in duplicate. Wash plate 2 times before adding standard, sample and control (zero) wells! |
| 2. | Aliquot 0.1ml standard solutions into the standard wells. |
| 3. | Add 0.1 ml of Sample / Standard dilution buffer into the control (zero) well. |
| 4. | Add 0.1 ml of properly diluted sample ( Human serum, plasma, tissue homogenates and other biological fluids.) into test sample wells. |
| 5. | Seal the plate with a cover and incubate at 37 °C for 90 min. |
| 6. | Remove the cover and discard the plate content, clap the plate on the absorbent filter papers or other absorbent material. Do NOT let the wells completely dry at any time. Wash plate X2. |
| 7. | Add 0.1 ml of Biotin- detection antibody working solution into the above wells (standard, test sample & zero wells). Add the solution at the bottom of each well without touching the side wall. |
| 8. | Seal the plate with a cover and incubate at 37°C for 60 min. |
| 9. | Remove the cover, and wash plate 3 times with Wash buffer. Let wash buffer rest in wells for 1 min between each wash. |
| 10. | Add 0.1 ml of SABC working solution into each well, cover the plate and incubate at 37°C for 30 min. |
| 11. | Remove the cover and wash plate 5 times with Wash buffer, and each time let the wash buffer stay in the wells for 1-2 min. |
| 12. | Add 90 µl of TMB substrate into each well, cover the plate and incubate at 37°C in dark within 10-20 min. (Note: This incubation time is for reference use only, the optimal time should be determined by end user.) And the shades of blue can be seen in the first 3-4 wells (with most concentrated standard solutions), the other wells show no obvious color. |
| 13. | Add 50 µl of Stop solution into each well and mix thoroughly. The color changes into yellow immediately. |
| 14. | Read the O.D. absorbance at 450 nm in a microplate reader immediately after adding the stop solution. |
When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.
| Sample Type | Protocol |
| Serum | If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. If serum separator tubes are not being used, allow samples to clot overnight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Remove serum and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. |
| Plasma | Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. Note: Over haemolysed samples are not suitable for use with this kit. |
| Urine & Cerebrospinal Fluid | Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid. |
| Cell culture supernatant | Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately. |
| Cell lysates | Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C. |
| Tissue homogenates | The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenize in 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or -80°C. |
| Tissue lysates | Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C. |
| Breast Milk | Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles. |
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