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Human DIO2 / Type II iodothyronine deiodinase ELISA Kit

SKU:
HUFI00730
Product Type:
ELISA Kit
Size:
96 Assays
Uniprot:
Q92813
Sensitivity:
0.094ng/ml
Range:
0.156-10ng/ml
ELISA Type:
Competitive
Synonyms:
DIO2, Type-II 5'-deiodinase, Type 2 DI, 5DII, DIOII, ITDI2, TXDI2
Reactivity:
Human
Research Area:
Metabolism
$719
Frequently bought together:

Description

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Human DIO2/Type II iodothyronine deiodinase ELISA Kit

The Human DIO2 (Type II Iodothyronine Deiodinase) ELISA Kit is specifically designed for the accurate measurement of DIO2 levels in human serum, plasma, and cell culture supernatants. This advanced kit offers high sensitivity and specificity, ensuring precise and reliable results for a variety of research applications.DIO2 is a key enzyme involved in the conversion of thyroid hormone, playing a crucial role in regulating metabolism and energy balance. Dysregulation of DIO2 has been linked to thyroid disorders, obesity, and other metabolic diseases, making it a valuable biomarker for understanding these conditions and potentially developing new treatment strategies.

With the Human DIO2 ELISA Kit, researchers can confidently analyze DIO2 levels in biological samples, contributing to a better understanding of thyroid function and metabolic processes. This kit offers a simple and efficient solution for studying DIO2-related pathways and exploring potential therapeutic interventions.

Product Name:Human DIO2 / Type II iodothyronine deiodinase ELISA Kit
Product Code:HUFI00730
Size:96 Assays
Alias:DIO2, Type-II 5'-deiodinase, Type 2 DI, 5DII, DIOII, ITDI2, TXDI2
Detection method:Competitive ELISA, Coated with Antibody
Application:This immunoassay kit allows for the in vitro quantitative determination of Human DIO2 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 DIO2 and the recovery rates were calculated by comparing the measured value to the expected amount of Human DIO2 in samples.
MatrixRecovery range(%)Average(%)
serum(n=5)89-10296
EDTA plasma(n=5)86-9790
UFH plasma(n=5)90-10598
Linearity:The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human DIO2 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Sample1:21:41:8
serum(n=5)86-101%91-101%85-103%
EDTA plasma(n=5)83-100%84-92%85-99%
UFH plasma(n=5)85-99%80-100%81-90%
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)60ul4°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 pipettetips
  • Incubator
  • Deionized or distilled water
  • Absorbent paper
  • Buffer resevoir
UniprotQ92813
UniProt Protein Function:DIO2: Responsible for the deiodination of T4 (3,5,3',5'- tetraiodothyronine) into T3 (3,5,3'-triiodothyronine). Essential for providing the brain with appropriate levels of T3 during the critical period of development. Belongs to the iodothyronine deiodinase family. 2 isoforms of the human protein are produced by alternative splicing.
UniProt Protein Details:Protein type:EC 1.97.1.10; Oxidoreductase; Membrane protein, integral

Chromosomal Location of Human Ortholog: 14q24.2-q24.3

Cellular Component: membrane; plasma membrane

Molecular Function:selenium binding; thyroxine 5'-deiodinase activity; ubiquitin protein ligase binding

Biological Process: thyroid hormone generation; thyroid hormone metabolic process

NCBI Summary:The protein encoded by this gene belongs to the iodothyronine deiodinase family. It catalyzes the conversion of prohormone thyroxine (3,5,3',5'-tetraiodothyronine, T4) to the bioactive thyroid hormone (3,5,3'-triiodothyronine, T3) by outer ring 5'-deiodination. This gene is widely expressed, including in thyroid, placenta, pituitary and brain. It is thought to be responsible for the 'local' production of T3, and thus important in influencing thyroid hormone action in these tissues. It has also been reported to be highly expressed in thyroids of patients with Graves disease, and in follicular adenomas. The intrathyroidal T4 to T3 conversion by this enzyme may contribute significantly to the relative increase in thyroidal T3 production in these patients. This protein is a selenoprotein containing the rare selenocysteine (Sec) amino acid at its active site, and may contain additional Sec residues. Sec is encoded by the UGA codon, which normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, designated the Sec insertion sequence (SECIS) element, that is necessary for the recognition of UGA as a Sec codon, rather than as a stop signal. Alternatively spliced transcript variants have been described for this gene. [provided by RefSeq, May 2016]
UniProt Code:Q92813
NCBI GenInfo Identifier:172045839
NCBI Gene ID:1734
NCBI Accession:Q92813.4
UniProt Secondary Accession:Q92813,Q6B0A3, Q9HCP8, Q9P1W4, Q9UDZ1, B9EGK0, G3V315
UniProt Related Accession:Q92813
Molecular Weight:34,704 Da
NCBI Full Name:Type II iodothyronine deiodinase
NCBI Synonym Full Names:deiodinase, iodothyronine, type II
NCBI Official Symbol:DIO2
NCBI Official Synonym Symbols:D2; 5DII; SelY; DIOII; TXDI2
NCBI Protein Information:type II iodothyronine deiodinase
UniProt Protein Name:Type II iodothyronine deiodinase
UniProt Synonym Protein Names:5DII; DIOII; Type 2 DI; Type-II 5'-deiodinase
Protein Family:Type II iodothyronine deiodinase
UniProt Gene Name:DIO2
UniProt Entry Name:IOD2_HUMAN

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

Equilibrate the TMB substrate for at least 30 min at 37°C beforeuse. When diluting samples and reagents, they must be mixed completely andevenly. It is recommended to plot a standard curve for each test.

StepProtocol
1.Set standard, test sample and control (zero) wells on the pre-coatedplate respectively, and then, record their positions. It isrecommended to measure each standard and sample in duplicate. Washplate 2 times before adding standard, sample and control (zero) wells!
2.Add Sample and Biotin-detection antibody: Add 50µL of Standard, Blank or Sample per well. The blankwell is added with Sample Dilution Buffer. Immediately add 50 µL of biotin-labelled antibody workingsolution to each well. Cover with the plate sealer provided. Gently tap the plate to ensure thoroughmixing. Incubate for 45 minutes at 37°C. (Solutions are added to the bottom of micro-ELISA platewell, avoid touching plate walls and foaming).
3.Wash: Aspirate each well and wash, repeating the process three timesWash by filling each well with Wash Buffer (approximately 350µL)using a squirt bottle, multi-channel pipette, manifold dispenser orautomated washer. Complete removal of liquid at each step is essentialto good performance. After the last wash, remove any remaining WashBuffer by aspirating or decanting. Invert the plate and pat it againstthick clean absorbent paper.
4.HRP-Streptavidin Conjugate(SABC): Add 100µL of SABC workingsolution to each well. Cover with a new Plate sealer. Incubate for30minutes at 37°C.
5.Wash: Repeat the aspiration/wash process for five times.
6.TMB Substrate: Add 90µL of TMB Substrate to each well. Coverwith a new Plate sealer. Incubate for about 10-20 minutes at 37°C.Protect from light. The reaction time can be shortened or extendedaccording to the actual color change, but not more than 30minutes.When apparent gradient appeared in standard wells, you can terminatethe reaction.
7.Stop: Add 50µL of Stop Solution to each well. Color turn toyellow immediately. The adding order of stop solution should be as thesame as the substrate solution.
8.OD Measurement: Determine the optical density (OD Value) of each wellat once, using a microplate reader set to 450 nm. You should open themicroplate reader ahead, preheat the instrument, and set the testing parameters.

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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