- TaqMan
TaqMan probes are hydrolysis Hybridization probe probes that are designed to increase the specificity of Real time polymerase chain reaction real time PCR assays . The method was first reported in 1991 by researchers at Cetus Corporation, ref Cite pmid 1871133 ref and the technology was subsequently developed by Roche Molecular Diagnostics for diagnostic assays and by Applied Biosystems for research applications. The TaqMan probe principle relies on the 5 3 exonuclease activity of Taq polymerase to cleave a dual labeled probe during hybridization to the complementary target sequence and fluorophore based detection. ref name taqman1 http www.ncbi.nlm.nih.gov projects genome probe doc ProjTaqMan.shtml TaqMan Gene Expression NCBI Projects ref As in other real time PCR methods, the resulting fluorescence ... stages of the PCR however, the TaqMan probe significantly increases the specificity of the detection. TaqMan probes were named after the videogame PacMan Taq Polymerase PacMan TaqMan as its ... 2 0800.htm The Real Time TaqMan PCR and Applications in Veterinary Medicine From PacMan to TaqMan a computer game revisited ref Principle Image Taqman.png thumb 200px Figure 1 TaqMan probe chemistry mechanism TaqMan probes consist of a fluorophore Covalent bond covalently attached to the 5 end of the oligonucleotide probe and a quencher at the 3 end ref name Taqman Probe http premierbiosoft.com tech notes TaqMan.html TaqMan Probes Introduction, functioning and applications ref Figure 1 . Several ..., quenching inhibits any fluorescence signals Figure 1 . TaqMan probes are designed such that they anneal ... of DNA template present in the PCR. Applications TaqMan probe based assays are widely used ... for instructions. references External links 1. http www.rt pcr.info taqman rt pcr TaqMan RT PCR ..., Taqman Probes, Molecular Beacons. 3. http www.scanelis.com webpages.aspx?rID 679 www.scanelis.com Real time PCR Animation, TaqMan Probe. DEFAULTSORT Taqman Category Chemical compounds Category ... more details
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- Beacon designer
Advert date February 2011 No footnotes date February 2011 Infobox Software name Beacon Designer logo screenshot caption developer Premier Biosoft latest release version 7.9 latest release date 17 June 2010 latest preview version latest preview date operating system Windows, Macintosh platform genre Bioinformatics license commercial website http www.premierbiosoft.com Beacon Designer designs highly specific an efficient primers and probes for real time PCR polymerase chain reaction assays. It is compatible to work on Windows as well as on Mac. The software currently supports the following real time PCR chemistries for efficient primer and probe design. 1. SYBR Green br 2. TaqMan br 3. Molecular beacon br 4. HRMA Primers br 5. Scorpions br 6. FRET br 7. Locked nucleic acid LNA Locked nucleic acid br 8. NASBA molecular biology NASBA br Beacon Designer program has built in support for homology avoidance using the standard web BLAST service or the set up of a desktop BLAST feature for identification of regions that are significantly cross homologous with the target gene sequence. The software designs real time pcr primers and probes for complex differential gene expression and allele discrimination assays. Avoidance of the cross homology renders specificity to the primers in question and they are highly targeted and only amplify the intend sequence and no other targets. Beacon Designer has been used in workshops and conferences related to real time PCR study as a reference software. The author company, Premier Biosoft has also launched a simple version for evaluation of oligos for real time PCR primers and probes support limited to TaqMan and SYBR Green primers by the name Beacon designer free version. External links http www.premierbiosoft.com molecular beacons index.html Beacon Designer Homepage http www.premierbiosoft.com qpcr index.html Beacon Designer Free Edition http www.biocompare.com Articles FeaturedArticle 1167 High Resolution Melt.html High Resolution Melt Ca ... more details
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- Risk of Missed PRRS PCR Detection
PCR allowed the method to extend to RNA targets. File TaqMan Probes.jpg left Real time PCR by TaqMan .... The specific chemistry used in diagnosis of PRRSV is commonly Taqman probes which emit light when they bind to the target sequence. Taqman probes focus on a small, roughly 100 base pair, fragment ... Cobas AmpliPrep Cobas TaqMan HIV 1 Test and Identification of Rare Polymorphisms Potentially Affecting ... for miss matches with the TaqMan probes used in the detection assay 1 week . Now the assay ... more details
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- Dark quencher
Essay like date February 2008 A dark quencher is a substance that absorbs excitation energy from a fluorophore and dissipates the energy as heat while a typical fluorescent Quenching fluorescence quencher re emits much of this energy as light ref Osterman, H., The Next Step in Near Infrared Fluorescence IRDye QC 1 Dark Quencher, 2009 Review Article. http biosupport.licor.com docs QC 1DarkQuencher v5.pdf Download PDF ref . Dark quenchers are used in molecular biology in conjunction with fluorophores. When the two are close together, such as in a molecule or protein, the fluorophore s emission is suppressed. This effect can be used to study molecular geometry and motion. An example of its use is in Taqman or invader assay, SNP genotyping methods. For instance, a hairpin loop with a fluorophore and quencher at the base of the stem is used. An unlabeled SNP specific PCR primer one of many with a specific 5 tail binds to the sequence to be probed, and the taq polymerase extends the sequence that will have a specific 5 end dependent on the SNP insensitive to polymorphisms upstream of the SNP in question . In the next run a primer molecular biology primer , complementary to that tail, with a hairpin loop is extended. In the next run the elongation of the complementary strand will linearise the hairpin separating the fluorophore and quencher . An alternative to using quenchers is to use F rster resonance energy transfer FRET where the combination of two dyes gives a signal ref Peng, X., Chen, H., Draney, D.R., Volcheck, W.M., A Non fluorescent, Broad Range Quencher Dye for FRET Assays, Analytical Biochemistry, 2009 Vol. 388 , pp. 220 228. http biosupport.licor.com docs NonfluorQuencherDyePaper09.pdf Download PDF ref . Mode of function Dark quenchers are dyes with no native fluorescence . Until the last few years, quenchers have typically been a second fluorescent dye, for example, fluorescein as the reporter and rhodamine as the quencher FAM TAM probes . However, quencher f ... more details
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- Flap endonuclease
8657312 ref Flap endonucleases have been used in biotechnology , for example the Taqman PCR assay ... more details
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- List of microfluidics related companies
Wikify date February 2011 This list of microfluidics related companies gives an overview of companies providing microfluidics products or solutions. ref name fluidicMEMS Lily Kim, http fluidicmems.com list of microfluidics lab on a chip and biomems companies List of microfluidics companies ,February 14, 2011. ref ref name microfluidic companies Nathan Blow, http www.nature.com nmeth journal v6 n9 full nmeth0909 683.html Microfluidics the great divide Nature Methods, 2009, 6, 683 686, DOI 10.1038 nmeth0909 683. ref List by Alphabet class wikitable sortable Company Name products and services country http www.abbott.com Abbott Laboratories USA http www.liquid logic.com Advanced Liquid Logic Digital Microfluidics NC, USA http www.agilent.com Agilent Technologies Agilent 2100 Bioanalyzer, HPLC Chip MS system USA http www.appliedbiosystems.com Applied Biosystems TaqMan OpenArray Genotyping USA http www.arrayjet.co.uk ArrayJet inkjet microarrayer United Kingdom http www.bartels mikrotechnik.de Bartels Mikrotechnik Engineering Services Active Microfluidics and Micro Pumps Germany http www.biacore.com Biacore USA http www.biflow systems.com BiFlow Systems GmbH Disposable microfluidic chips with integrated micropumps for R&D Germany http www.bio rad.com Bio Rad USA http www.appliedbiosystems.com absite us en home news announcements biotrove.html BioTrove mid density OpenArray Real Time PCR System USA http www.evolvemol.com EvolveMol Advanced Cell Sorters USA http www.caliperlifesciences.com Caliper Life Sciences LabChip Systems USA http www.cellixltd.com Cellix Ireland http www.cepheid.com Cepheid USA http www.clarosdx.com Claros Diagnostics in vitro medical diagnostic tests USA http www.dionex.com Dionex USA http www.dolomite microfluidics.com Dolomite microfluidic chips, pumps, valves, connectors and system solutions United Kingdom http www.eksigent.com Eksigent Technologies California, USA , http www.emeraldbiosystems.com Emerald Biosystems Protein Crystallization Screenin ... more details
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- SNP genotyping
Krjutskov et al. 2008 . 5 nuclease Taq DNA polymerase s 5 nuclease activity is used in the TaqMan assay for SNP genotyping. The TaqMan assay is performed concurrently with a PCR reaction and the results ... 2002 . Since the TaqMan assay is based on PCR, it is relatively simple to implement. The TaqMan ... each SNP requires a distinct probe, the TaqMan assay is limited by the how close the SNPs can be situated ... in microtitre plates. Generally, TaqMan is limited to applications that involve interrogating a small ... nucleotide polymorphism detection allelic discrimination using TaqMan . Psychiatr Genet . 12 3 133 ... more details
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- Molecular processors
by polymerase chain reaction using the TaqMan fluorogenic real time detection system first9 H ... more details
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- Chromosome conformation capture
. Real time PCR using Taqman probes 3C qPCR provides a more quantitative measurement of the fragment of interest. The Taqman probe and a constant primer hybridize to the restriction fragment that contains ... more details
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- Hybridization probe
of probes Scorpion probes Molecular beacon Molecular Beacon probes TaqMan probes LNA Locked nucleic ... more details
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- Bacteroides
of Bacteroides 16S rRNA Gene TaqMan Based Real Time PCR Assays for Estimation of Total, Human,and Bovine ... more details
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- Digital polymerase chain reaction
with TaqMan detection journal Nucleic Acids Research volume 25 pages 1999 2004 year 1997 issue 10 pmc ... more details
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- Mir-199 microRNA precursor
18408758 pmc 3041589 doi 10.1038 onc.2008.112 ref Expression patterns of miR 199 Using TaqMan real time ... more details
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- Detection of genetically modified organisms
, such as Sybr Green, or fluorophore containing DNA probes, such as TaqMan , to measure the amount ... more details
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- Single-nucleotide polymorphism
title Genotyping of triallelic SNPs using TaqMan PCR journal Molecular and Cellular Probes volume ... Variome TaqMan Affymetrix International HapMap Project tag SNP Short tandem repeat STR Snpstr Notes ... more details
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- Lymphogranuloma venereum
Taqman analysis has been developed to diagnose LGV. ref name pmid18447917 cite journal title Rapid ... by TaqMan PCR journal BMC infectious diseases volume 8 pages 56 year 2008 pmid 18447917 pmc 2387162 ... more details
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- Virus quantification
prot Molecular Biology PCR Real Time PCR index.html ref Sequence specific probes, such as TaqMan ... Martin first3 C. last4 Crowley first4 A. title Taqman Technology and Real Time Polymerase Chain Reaction ... more details
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- Primer dimer
Sequence specific probes Taqman and Molecular beacon probes generate signal only in the presence of their target ... more details
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- COLD-PCR
PCR. QPCR and COLD PCR COLD PCR run on a Quantitative real time PCR qPCR machine, using Taqman probes ... more details
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- Real-time polymerase chain reaction
probe method Image TaqMan Probes.jpg thumb 750px 1 In intact probes, reporter fluorescence is quenched ... more details
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- 5-HT4 receptor
by TaqMan real time RT PCR journal Brain Res. Mol. Brain Res. volume 90 issue 2 pages 125 34 year ... more details
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- Life Technologies
TaqMan provides research use products for gene expression, miRNA, protein analysis, copy number variation ... more details
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- High Resolution Melt
Essay like date January 2009 Refimprove date October 2011 High Resolution Melt HRM analysis is a powerful technique in molecular biology for the detection of mutation s, Polymorphism biology polymorphisms and epigenetic differences in DNA double stranded DNA samples. It was discovered and developed by Idaho Technology and the University of Utah. ref For academic treatment of the history of HRM see http www.dna.utah.edu Hi Res TOP Hi Res 20Melting.html ref It has advantages over other genotyping technologies, namely It is cost effective vs. other genotyping technologies such as DNA sequencing sequencing and Taqman SNP typing. This makes it ideal for large scale genotyping projects. It is fast and powerful thus able to accurately genotype many samples rapidly. It is simple. With a good quality HRM assay, powerful genotyping can be performed by non geneticists in any laboratory with access to an HRM capable real time PCR machine. Method HRM analysis is performed on double stranded DNA samples. Typically the user will use polymerase chain reaction PCR prior to HRM analysis to amplify the DNA region in which their mutation of interest lies. Essentially the PCR process turns a tiny amount of your region of DNA of interest in to a large amount, so you have quantities large enough for better analysis. In the tube there are now many of copies of your region of DNA of interest. This region that is amplified is known as the amplicon. After the PCR process the HRM analysis begins. The process is simply a precise warming of the amplicon DNA from around 50 C up to around 95 C. At some point during this process, the melting temperature of the amplicon is reached and the two strands of DNA separate or melt apart. Image DNA melting cartoon.jpg 500px The secret of HRM is to monitor this process happening in real time. This is achieved by using a fluorescent dye. The dyes that are used for HRM are known as intercalating dyes and have a unique property. They bind specifically to double ... more details
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- Mycoplasma haemofelis
Use of a Taqman PCR to determine the response of M. haemofelis infection to antibiotic treatment journal ... more details
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- Viral load
TaqMan HIV 1 Test ref http www.fda.gov BiologicsBloodVaccines BloodBloodProducts ApprovedProducts ... more details
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