Human Cdk4 ELISA Kit

SKU:
HUFI02301
€599

Description

ELISA Kit Technical ManualMSDS

Human CDK4 (Cyclin Dependent Kinase 4) ELISA Kit - Information

The Assay Genie Human CDK4 (Cyclin Dependent Kinase 4) ELISA Kit can assay for Human CDK4 in the following samples: serum, blood, plasma, cell culture supernatant and other related supernatants and tissues.

How do our Human CDK4 (Cyclin Dependent Kinase 4) ELISA Kits Work?

The Assay Genie (enzyme-linked immunosorbent assays) assay kits are designed for the quantitative measurement of analytes in a wide variety of samples. As today's scientists demand high quality consistent data for high impact journals, Assay Genie have developed our range of sensitive, fast and reliable ELISA kit assays to meet and exceed those demands. Our assay kits use a quantitative sandwich ELISA technique and each kit comes with highly specific antibodies pre-coated onto a 96-well microtiter plate.

At Assay Genie we understand the need for speed! Therefore, we have developed an ultra-fast protocol meaning you achieve your results rapidly. So, once you have prepared and plated your samples, blanks and standards, you simply incubate with a highly specific biotin-conjugated primary antibody and Avidin conjugated to Horseradish Peroxidase (HRP) and incubate for the appropriate length of time. After washing the plate according to the protocol and addition of the TMB (3,3',5,5'-Tetramethylbenzidine) solution, the appearance of a blue colour should be detected due to an enzymatic reaction catalysed by HRP. Next step is the addition of the Stop Solution which terminates the HRP reaction and the blue colour turns yellow with the signal intensity measured on a plate reader at 450nm. The amount of bound Human CDK4 is proportional to the signal generated by the reaction meaning the kit assay gives you a quantitative measurement of the analyte in your samples.

Human CDK4 (Cyclin Dependent Kinase 4) ELISA Kit Data

Product Code

HUFI02301

UniprotP11802
Alias

CDK4, CMM3, PSK-J3, Cell division protein kinase 4, CMM3, cyclin-dependent kinase 4, melanoma cutaneous malignant, 3, MGC14458, PSK-J3cell division kinase 4

Detection method

Sandwich ELISA, Double Antibody

Application

This immunoassay kit allows for the in vitro quantitative determination of Human CDK4 concentrations in serum plasma and other biological fluids.

Size

96T

Range

0.313-20ng/ml

Sensitivity

0.188ng/ml

Storage

4'C for 6 months

Recovery

Matrices listed below were spiked with certain level of Human CDK4 and the recovery rates were calculated by comparing the measured value to the expected amount of Human CDK4 in samples.

MatrixRecovery range(%)Average(%)
serum(n=5)86-9893
EDTA plasma(n=5)88-10294
UFH plasma(n=5)92-9894
Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human CDK4 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample1:21:41:8
serum(n=5)87-102%90-100%93-104%
EDTA plasma(n=5)88-101%84-94%83-99%
UFH plasma(n=5)80-98%82-93%80-92%
CV(%)

Intra-Assay: CV<8%
Inter-Assay: CV<10%

Note

For Research Use Only

Human CDK4 (Cyclin Dependent Kinase 4) ELISA Kit Protocol

The below protocol is a sample protocol for Human CDK4 (Cyclin Dependent Kinase 4) ELISA Kit using a biotinylated detection antibody and streptavidin-HRP. Sandwich ELISA Kits allow for the detection and quantification of an analyte in a sample by using known analyte concentrations as standards and plotting absorbance of known concentrations vs known standard concentrations. This allows the researcher to calculate the amount of Human CDK4 Antibody present in their sample.

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.

Assay 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.

Human CDK4 (Cyclin Dependent Kinase 4) ELISA Kit components

96 Assays

Storage

ELISA Microplate (Dismountable)8×12 strips4°C for 6 months
Lyophilized Standard24°C/-20°C
Sample/Standard Dilution Buffer20ml4°C
Biotin-labeled Antibody(Concentrated)120ul4°C (Protect from light)
Antibody Dilution Buffer10ml4°C
HRP-Streptavidin Conjugate(SABC)120ul4°C (Protect from light)
SABC Dilution Buffer10ml4°C
TMB Substrate10ml4°C (Protect from light)
Stop Solution10ml4°C
Wash Buffer(25X)30ml4°C
Plate Sealer5 -

Other materials and equipment required:

The Assay Genie Human CDK4 (Cyclin Dependent Kinase 4) ELISA Kit will require other equipment and materials to carry out the assay. Please see list below for further details.
  • 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

Sample Preparation

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 TypeProtocol

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.

Human CDK4 Protein Information

UniProt Protein Function:CDK4: a protein kinase of the CDK family that is important for cell cycle G1 phase progression. Its activity is restricted to the G1-S phase. Controlled by the regulatory subunits D-type cyclins and CDK inhibitor p16(INK4a). Phosphorylates the retinoblastoma gene product (Rb). Point mutations found in somatic and familial melanoma. Amplified in sarcomas, glioma and lymphoma. Amplified, methylated or deleted in head and neck squamous cell carcinoma. Overexpression drives epithelial tumors in mice. Disruption makes mice resistant to cancer. Inhibitor: PD332991.
UniProt Protein Details:

Protein type:EC 2.7.11.22; Kinase, protein; Protein kinase, CMGC; Cell cycle regulation; Protein kinase, Ser/Thr (non-receptor); CMGC group; CDK family; CDK4 subfamily; CDK/CDK4 subfamily

Chromosomal Location of Human Ortholog: 12q14

Cellular Component: nucleoplasm; transcription factor complex; nuclear membrane; tight junction; perinuclear region of cytoplasm; nucleolus; cyclin-dependent protein kinase holoenzyme complex; nucleus; chromatin; cytosol

Molecular Function:protein binding; cyclin binding; cyclin-dependent protein kinase activity; protein complex binding; cyclin-dependent protein kinase regulator activity; ATP binding

Biological Process: circadian rhythm; lens development in camera-type eye; response to drug; establishment and/or maintenance of chromatin architecture; organ regeneration; positive regulation of cell size; positive regulation of translation; positive regulation of apoptosis; response to toxin; response to testosterone stimulus; signal transduction; protein amino acid phosphorylation; positive regulation of fibroblast proliferation; response to hyperoxia; regulation of gene expression; cell division; response to lead ion; positive regulation of cell proliferation; mitotic cell cycle; regulation of protein kinase activity; G1/S transition of mitotic cell cycle

Disease: Melanoma, Cutaneous Malignant, Susceptibility To, 3

NCBI Summary:The protein encoded by this gene is a member of the Ser/Thr protein kinase family. This protein is highly similar to the gene products of S. cerevisiae cdc28 and S. pombe cdc2. It is a catalytic subunit of the protein kinase complex that is important for cell cycle G1 phase progression. The activity of this kinase is restricted to the G1-S phase, which is controlled by the regulatory subunits D-type cyclins and CDK inhibitor p16(INK4a). This kinase was shown to be responsible for the phosphorylation of retinoblastoma gene product (Rb). Mutations in this gene as well as in its related proteins including D-type cyclins, p16(INK4a) and Rb were all found to be associated with tumorigenesis of a variety of cancers. Multiple polyadenylation sites of this gene have been reported. [provided by RefSeq, Jul 2008]
UniProt Code:P11802
NCBI GenInfo Identifier:1168867
NCBI Gene ID:1019
NCBI Accession:P11802.2
UniProt Secondary Accession:P11802,O00576, Q6FG61, B2R9A0, B4DNF9,
UniProt Related Accession:P11802
Molecular Weight:Calculated MW: 20kDa/33kDaObserved MW: 34kDa
NCBI Full Name:Cyclin-dependent kinase 4
NCBI Synonym Full Names:cyclin-dependent kinase 4
NCBI Official Symbol:CDK4
NCBI Official Synonym Symbols:CMM3; PSK-J3
NCBI Protein Information:cyclin-dependent kinase 4; cell division protein kinase 4
UniProt Protein Name:Cyclin-dependent kinase 4
UniProt Synonym Protein Names:Cell division protein kinase 4; PSK-J3
Protein Family:Cyclin-dependent kinase
UniProt Gene Name:CDK4
UniProt Entry Name:CDK4_HUMAN
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Additional Information

Product type:
ELISA
Reactivity:
Human
ELISA Type:
Sandwich
Research Area:
Cell Cycle
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