Human Cyclin-dependent kinase 5 activator 1 (CDK5R1) ELISA Kit

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SKU:
HUEB1728
Product Type:
ELISA Kit
Size:
96 Assays
Uniprot:
Q15078
Range:
78-5000 pg/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
Frequently bought together:

Description

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Product Name:Human Cyclin-dependent kinase 5 activator 1 (CDK5R1) ELISA Kit
Product Code:HUEB1728
Alias:Cyclin-dependent kinase 5 activator 1, CDK5 activator 1, Cyclin-dependent kinase 5 regulatory subunit 1, TPKII regulatory subunit, CDK5R1, CDK5R, NCK5A
Uniprot:Q15078
Reactivity:Human
Range:78-5000 pg/ml
Detection Method:Sandwich
Size:96 Assay
Storage:Please see kit components below for exact storage details
Note:For research use only
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
Component Quantity (96 Assays) Storage
ELISA Microplate (Dismountable) 8×12 strips -20°C
Lyophilized Standard 2 -20°C
Sample Diluent 20ml -20°C
Assay Diluent A 10mL -20°C
Assay Diluent B 10mL -20°C
Detection Reagent A 120µL -20°C
Detection Reagent B 120µL -20°C
Wash Buffer 30mL 4°C
Substrate 10mL 4°C
Stop Solution 10mL 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

*Note: The below protocol is a sample protocol. Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.

Allow all reagents to reach room temperature (Please do not dissolve the reagents at 37°C directly). All the reagents should be mixed thoroughly by gently swirling before pipetting. Avoid foaming. Keep appropriate numbers of strips for 1 experiment and remove extra strips from microtiter plate. Removed strips should be resealed and stored at -20°C until the kits expiry date. Prepare all reagents, working standards and samples as directed in the previous sections. Please predict the concentration before assaying. If values for these are not within the range of the standard curve, users must determine the optimal sample dilutions for their experiments. We recommend running all samples in duplicate.

Step
1. Add Sample: Add 100µL of Standard, Blank, or Sample per well. The blank well is added with Sample diluent. Solutions are added to the bottom of micro ELISA plate well, avoid inside wall touching and foaming as possible. Mix it gently. Cover the plate with sealer we provided. Incubate for 120 minutes at 37°C.
2. Remove the liquid from each well, don't wash. Add 100µL of Detection Reagent A working solution to each well. Cover with the Plate sealer. Gently tap the plate to ensure thorough mixing. Incubate for 1 hour at 37°C. Note: if Detection Reagent A appears cloudy warm to room temperature until solution is uniform.
3. Aspirate each well and wash, repeating the process three times. Wash by filling each well with Wash Buffer (approximately 400µL) (a squirt bottle, multi-channel pipette,manifold dispenser or automated washer are needed). Complete removal of liquid at each step is essential. After the last wash, completely remove remaining Wash Buffer by aspirating or decanting. Invert the plate and pat it against thick clean absorbent paper.
4. Add 100µL of Detection Reagent B working solution to each well. Cover with the Plate sealer. Incubate for 60 minutes at 37°C.
5. Repeat the wash process for five times as conducted in step 3.
6. Add 90µL of Substrate Solution to each well. Cover with a new Plate sealer and incubate for 10-20 minutes at 37°C. Protect the plate from light. The reaction time can be shortened or extended according to the actual color change, but this should not exceed more than 30 minutes. When apparent gradient appears in standard wells, user should terminatethe reaction.
7. Add 50µL of Stop Solution to each well. If color change does not appear uniform, gently tap the plate to ensure thorough mixing.
8. Determine the optical density (OD value) of each well at once, using a micro-plate reader set to 450 nm. User should open the micro-plate reader in advance, preheat the instrument, and set the testing parameters.
9. After experiment, store all reagents according to the specified storage temperature respectively until their expiry.

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.
ELISA
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