qPCR/Real-Time PCR

Primer-Probe

<h2 dir="ltr"> What Is a Primer-Probe Master Mix?</h2>
 A primer-probe master mix is a 2x concentrated formulation built around a hot-start Taq DNA polymerase, dNTPs, MgCl2, and optimised buffer, designed for use with hydrolysis-probe detection chemistries such as TaqMan. Unlike SYBR Green dye-based mixes, primer-probe formulations rely on a separately added, fluorescently labelled, sequence-specific probe combined with target-specific primers to generate the detection signal, with specificity coming from both primer and probe sequence matching. Choose a primer-probe master mix when assay specificity is critical, when multiplexing several targets in one well is needed, or when working with an established probe-based assay design.
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<h2 dir="ltr">What you will find:</h2>
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<ul>
<li data-section-id="qhwnhl" data-start="279" data-end="413">Probe-based qPCR master mixes with HiROX, LoROX, and ROX-free options for compatibility across a range of real-time PCR instruments.</li>
<li data-section-id="1cnihmh" data-start="414" data-end="543">Hot-start polymerase formulations designed to support specific target detection in hydrolysis probe (TaqMan-style) qPCR assays.</li>
<li data-section-id="51tf3n" data-start="544" data-end="643">Blue tracking dye probe master mixes for easier reaction setup and visual pipetting confirmation.</li>
<li data-section-id="cjeacg" data-start="644" data-end="749">2X ready-to-use probe qPCR master mixes containing optimized buffers, dNTPs, and polymerase components.</li>
<li data-section-id="xfwfro" data-start="750" data-end="884">One-step probe RT-qPCR formats that combine reverse transcription and real-time PCR amplification in a single tube for RNA analysis.</li>
</ul>
<h2 dir="ltr"> How to Choose a Primer-Probe Master Mix</h2>
 Reference Dye Inclusion Primer-probe master mixes commonly include ROX as a passive reference dye for signal normalisation across wells on instruments that require it -- confirm whether your real-time PCR instrument needs ROX and whether the chosen master mix includes it or requires separate addition. Multiplexing Capability A core advantage of probe-based chemistry is multiplexing -- detecting multiple targets in a single well using probes labelled with spectrally distinct fluorophores. Confirm the master mix is validated for the number of multiplexed targets your assay requires. Probe Chemistry Compatibility While TaqMan-style hydrolysis probes are the most common, other probe chemistries such as Scorpion primers, exist; confirm the master mix is formulated for compatibility with your specific probe chemistry. Primer and Probe Concentration Guidelines Standard setups commonly use primer pairs at a final concentration around 0.5 &micro;M and probes at 0.25-0.5 &micro;M -- confirm the master mix manufacturer's recommended ranges, since probe concentration affects both signal intensity and background. One-Step vs. Two-Step Application Primer-probe master mixes are used in both two-step workflows (with a separately generated cDNA template) and as the chemistry component within one-step RT-qPCR kits -- confirm which configuration matches your workflow when selecting a product. 
<h2 dir="ltr"> Specifications Context</h2>
 In probe-based qPCR, the 5'-3' exonuclease activity of the Taq DNA polymerase cleaves the dual-labelled probe annealed to the target sequence during amplification, separating a fluorescent reporter from its quencher and generating signal proportional to target abundance -- the mechanism underlying the widely used TaqMan probe system. Because both primer and probe sequence must match the target for signal generation, probe-based assays generally offer higher specificity than dye-based detection, and because probes can be labelled with spectrally distinct fluorophores, multiple targets can be detected in a single well. Standard reaction setup adds primer pairs at approximately 0.5 &micro;M and probes at 0.25-0.5 &micro;M to the 2x master mix. Primer-probe master mixes are typically stored at &minus;20 &deg;C to &minus;30 &deg;C and protected from light; lot-specific CoAs are available on request. 
<a href="https://mbpinc.net/contact-us">Contact the expert team</a> at MBP today and get optimized Primer-Probe real-time master mixes for your lab.

User Manual

AzuraView Probe Fast qPCR Mix Blue - Product Sheet

MSDS

AzuraView™ Probe Fast qPCR Mix Blue

AZ-2601B by Azura Genomics is an inhibitor-tolerant 2× master mix formulated for probe-based real-time qPCR, including TaqMan® and molecular beacon assays, with a blue inert tracer dye for visual confirmation of pipetting and compatibility with standard and fast-cycling thermal cyclers.