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Human DDX42 / ATP-dependent RNA helicase DDX42 ELISA Kit

SKU:
HUFI01364
Product Type:
ELISA Kit
Size:
96 Assays
Uniprot:
Q86XP3
Sensitivity:
46.875pg/ml
Range:
78.125-5000pg/ml
ELISA Type:
Sandwich
Synonyms:
DDX42, ATP-dependent RNA helicase DDX42, Splicing factor 3B-associated 125 kDa protein, SF3b125, SF3b DEAD box protein, RNA helicase-related protein, RNAHP, DEAD box protein 42, RNA helicase-like protein, RHELP
Reactivity:
Human
$719
Frequently bought together:

Description

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Human DDX42/ATP-dependent RNA helicase DDX42 ELISA Kit

The Human DDX42 ATP-Dependent RNA Helicase DDX42 ELISA Kit is a cutting-edge tool designed for the accurate quantification of DDX42 levels in human samples including serum, plasma, and cell culture supernatants. This kit provides exceptional sensitivity and specificity, ensuring dependable and reproducible results for a variety of research applications.DDX42 is an essential protein that functions as an ATP-dependent RNA helicase, playing a crucial role in RNA metabolism and gene regulation. It is involved in various cellular processes including RNA splicing, translation, and RNA transport, making it a pivotal player in gene expression regulation.

The detection of DDX42 levels is valuable for studying RNA-related pathways, investigating diseases such as cancer and viral infections where RNA processing is dysregulated, and exploring potential therapeutic targets. The Human DDX42 ATP-Dependent RNA Helicase DDX42 ELISA Kit is a powerful tool for researchers seeking to deepen their understanding of RNA biology and its implications in human health and disease.

Product Name:Human DDX42 / ATP-dependent RNA helicase DDX42 ELISA Kit
Product Code:HUFI01364
Size:96 Assays
Alias:DDX42, ATP-dependent RNA helicase DDX42, Splicing factor 3B-associated 125 kDa protein, SF3b125, SF3b DEAD box protein, RNA helicase-related protein, RNAHP, DEAD box protein 42, RNA helicase-like protein, RHELP
Detection method:Sandwich ELISA, Double Antibody
Application:This immunoassay kit allows for the in vitro quantitative determination of Human DDX42 concentrations in serum plasma and other biological fluids.
Sensitivity:46.875pg/ml
Range:78.125-5000pg/ml
Storage:4°C for 6 months
Note:For Research Use Only
Recovery:Matrices listed below were spiked with certain level of Human DDX42 and the recovery rates were calculated by comparing the measured value to the expected amount of Human DDX42 in samples.
MatrixRecovery range(%)Average(%)
serum(n=5)88-10494
EDTA plasma(n=5)89-10498
UFH plasma(n=5)86-105100
Linearity:The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human DDX42 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Sample1:21:41:8
serum(n=5)88-99%85-99%85-95%
EDTA plasma(n=5)82-91%85-98%82-97%
UFH plasma(n=5)82-99%81-97%83-99%
CV(%):Intra-Assay: CV<8%
Inter-Assay: CV<10%
ComponentQuantityStorage
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:

  • 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
UniprotQ86XP3
UniProt Protein Function:DDX42: ATP-dependent RNA helicase. Binds to partially double- stranded RNAs (dsRNAs) in order to unwind RNA secondary structures. Unwinding is promoted in the presence of single-strand binding proteins. Mediates also RNA duplex formation thereby displacing the single-strand RNA binding protein. ATP and ADP modulate its activity: ATP binding and hydrolysis by DDX42 triggers RNA strand separation, whereas the ADP-bound form of the protein triggers annealing of complementary RNA strands. Involved in the survival of cells by interacting with TP53BP2 and thereby counteracting the apoptosis-stimulating activity of TP53BP2. Relocalizes TP53BP2 to the cytoplasm. Belongs to the DEAD box helicase family. DDX42 subfamily. 2 isoforms of the human protein are produced by alternative splicing.
UniProt Protein Details:Protein type:Helicase; EC 3.6.4.13

Chromosomal Location of Human Ortholog: 17q23.3

Cellular Component: cytoplasm; membrane; nucleoplasm; nucleus

Molecular Function:ATP-dependent RNA helicase activity; protein binding

Biological Process: protein localization; RNA secondary structure unwinding

NCBI Summary:This gene encodes a member of the Asp-Glu-Ala-Asp (DEAD) box protein family. Members of this protein family are putative RNA helicases, and are implicated in a number of cellular processes involving alteration of RNA secondary structure such as translation initiation, nuclear and mitochondrial splicing, and ribosome and spliceosome assembly. Members of this family are believed to be involved in embryogenesis, spermatogenesis, and cellular growth and division. Two transcript variants encoding the same protein have been identified for this gene. [provided by RefSeq, Jul 2008]
UniProt Code:Q86XP3
NCBI GenInfo Identifier:74750541
NCBI Gene ID:11325
NCBI Accession:Q86XP3.1
UniProt Secondary Accession:Q86XP3,O75619, Q68G51, Q96BK1, Q96HR7, Q9Y3V8, A6NML1 A8KA43,
UniProt Related Accession:Q86XP3
Molecular Weight:90,068 Da
NCBI Full Name:ATP-dependent RNA helicase DDX42
NCBI Synonym Full Names:DEAD-box helicase 42
NCBI Official Symbol:DDX42  
NCBI Official Synonym Symbols:RHELP; RNAHP; SF3B8; DDX42P; SF3b125  
NCBI Protein Information:ATP-dependent RNA helicase DDX42
UniProt Protein Name:ATP-dependent RNA helicase DDX42
UniProt Synonym Protein Names:DEAD box protein 42; RNA helicase-like protein; RHELP; RNA helicase-related protein; RNAHP; SF3b DEAD box protein; Splicing factor 3B-associated 125 kDa protein; SF3b125
Protein Family:ATP-dependent RNA helicase
UniProt Gene Name:DDX42  
UniProt Entry Name:DDX42_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.

StepProtocol
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 TypeProtocol
SerumIf 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.

PlasmaCollect 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 FluidCollect 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 supernatantCollect 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 lysatesSolubilize 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 homogenatesThe 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 lysatesRinse 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 MilkCollect 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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