The BK virus is a member of the polyomavirus family. It has been suggested that this virus may be transmitted through respiratory fluids or urine, since infected individuals periodically excrete virus in the urine. BK viral infections are typically asymptomatic in healthy individuals, however very mild symptoms may appear including mild respiratory infections and fever. Infections with BK virus in immunocompromised or immunosupressed patients are much more severe and may involve renal dysfunction. In fact, in kidney transplant patients the immunosupressive drugs required for the transplant may allow the virus to replicate within the graft, resulting in a disease called BK virus nephropathy (BKVN). The JC virus is a type of human polyomavirus and is very common in the general population, infecting 70 to 90% of humans. Most people acquire JCV in childhood or adolescence. Typically the infection is subclinical and no of consequence in individuals with healthy immune systems. The initial site of infection may be the tonsils or the gastrointestinal tract, and the virus then remains latent in the gastrointestinal tract. JCV can also infect the tubular epithelial cells in the kidneys, where it continues to reproduce, shedding virus particles in the urine. Also, JCV can cross the blood-brain barrier into the central nervous system. JCV is known to cause the usually fatal progressive multifocal leukoencephalopathy (PML) by destroying oligodendrocytes in the brain in immunodeficient or immunosuppressed individuals. The JC and BK viruses are very similar, with their genomes sharing 75% homology. It is however important to differentiate between the viruses due to the differences in pathology and especially the invariably fatal outcome of PML which is only caused by the JC virus.
BKV/JCV TaqMan PCR Kit, 100 reactions
BKV/JCV TaqMan PCR Probe/Primer Set and Controls, 100 reactions
For research use only and NOT intended for in vitro diagnostics.
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Storage Conditions and Product Stability
All kit components can be stored for 2 years after the date of production without showing any reduction in performance.
All kit components should be stored at -20°C upon arrival. Repeated thawing and freezing (> 2 x) of the Master Mix and Positive Control should be avoided, as this may affect the performance of the assay. If the reagents are to be used only intermittently, they should be frozen in aliquots.
| Component | Cat. TM39350 (100 preps) | Cat. TM39310 (100 preps) |
|---|---|---|
| MDx TaqMan 2X PCR Master Mix | 2 x 700 μL | – |
| BKV/JCV Primer & Probe Mix | 280 μL | 280 μL |
| BKV/JCV Positive Control | 150 μL | 150 μL |
| Nuclease-Free Water (Negative Control) | 1.25 mL | 1.25 mL |
| Product Insert | 1 | 1 |
Description
The ExcelTaq™ 2X Fast Q-PCR Master Mix (SYBR, ROX) is a ready-to-use reagent with all the essential components for quantitative real-time PCR (qPCR) except primers and templates. The master mix contains a highly stable hot-start Taq polymerase in an optimized buffer with dsDNA specific SYBR green fluorescent dye. Consequently, the ExcelTaq™ 2X Fast Q-PCR Master Mix (SYBR, ROX) features high stability during storage, even at 37°C for weeks. In addition to high sensitivity and signal intensity, the ExcelTaq™ 2X Fast Q-PCR Master Mix (SYBR, ROX) performs a low background/ high specificity qPCR results, as well as a better compatibility with fast PCR program. With inert smart blue contrast dye, the ExcelTaq™ 2X Fast Q-PCR Master Mix (SYBR, ROX) is ready-to-use and greatly reduces pipetting errors, while largely improving the reproducibility of the process. The ExcelTaq™ 2X Fast Q-PCR Master Mix (SYBR, ROX) also includes ROX reference dye for normalizing the fluorescent reporter signal in real-time quantitative PCR. This master mix allows sensitive, precise amplification, real-time tracking of the amplification process, and simultaneous quantification for targeted DNA molecules.
Features
Storage
Protect from light.
Aliquot to avoid multiple freeze-thaw cycles.
-20°C for 12 months
The ExcelTaq™ 2X Fast Q-PCR Master Mix (SYBR, ROX) is a ready-to-use reagent with all the essential components for quantitative real-time PCR (qPCR) except primers and templates. The master mix contains a highly stable hot-start Taq polymerase in an optimized buffer with dsDNA specific SYBR green fluorescent dye. Consequently, the ExcelTaq™ 2X Fast Q-PCR Master Mix (SYBR, ROX) features high stability during storage, even at 37°C for weeks. In addition to high sensitivity and signal intensity, the ExcelTaq™ 2X Fast Q-PCR Master Mix (SYBR, ROX) performs a low background/ high specificity qPCR results, as well as a better compatibility with fast PCR program. With inert smart blue contrast dye, the ExcelTaq™ 2X Fast Q-PCR Master Mix (SYBR, ROX) is ready-to-use and greatly reduces pipetting errors, while largely improving the reproducibility of the process. The ExcelTaq™ 2X Fast Q-PCR Master Mix (SYBR, ROX) also includes ROX reference dye for normalizing the fluorescent reporter signal in real-time quantitative PCR. This master mix allows sensitive, precise amplification, real-time tracking of the amplification process, and simultaneous quantification for targeted DNA molecules.
The NGS Library Circularization Kit (MGI Platform) was developed for preparation of single-stranded circular DNA libraries for next generation sequencing (MGI platform).
The kit uses linear dsDNA libraries (MGI platform) as input and enriches the circularized single-stranded DNA libraries. The circularization kit has a higher library circularization efficiency (25%) as compared to other vendors (7-15%).
NGS Library Circularization Kit workflow
Comparison of Library Circularization Efficiency
Kit features
The NGS Library Circularization Kit (MGI Platform) was developed for preparation of single-stranded circular DNA libraries for next generation sequencing (MGI platform).